LICENCE for DR AS/NZS 3500.0:2020, Plumbing and Drainage, Part 0: Glossary of Terms

LICENCE for DR AS/NZS 3500.0:2020, Plumbing and drainage, Part 0: Glossary of terms

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Draft

Australian/New Zealand Standard™

Public Comment is invited for:

DR AS/NZS 3500.0:2020, Plumbing and drainage, Part 0: Glossary of terms

Revision of AS/NZS 3500.0:2003 Public Comment period: Start date: 15 June 2020 Close date: 17 August 2020

To submit comments please use the following link: . https://hub.standards.org.au/hub/public/listOpenCommentingPublication.action

During their development process, Australian/New Zealand Standards are available in draft form during the public consultation period to allow any interests concerned with the application of the proposed Standard to review the draft and submit their comments.

This draft is liable to alteration. It is not to be regarded as an Australian/New Zealand Standard untilUpon finally successful issued conclusion as such by of Standards the Public Australia/Standards Comment period it is New proposed Zealand. to publish this Standard as AS/NZS 3500.0:202X. This is a draft document made available by Standards Australia to the registered licensee solely for review in providingAny other use public of the document comment. is prohibited. The registered licensee may print once only. Further copying, storage, distributionFull licence terms or are use available on network at https://www.standards.org.au/home/public-comment-document-licence-agreement is prohibited. Standards Australia Limited does not warrant or represent that the draft document is accurate or complete or that it should be relied on for any particular purpose. Any user of the document should rely on the final published version. DR AS/NZS 3500.0:2020 ii

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© Standards Australia Limited/Standards New Zealand 2020 This is a draft document made available by Standards Australia to the registered licensee solely for review in providingAny other use public of the document comment. is prohibited. The registered licensee may print once only. Further copying, storage, distributionFull licence terms or are use available on network at https://www.standards.org.au/home/public-comment-document-licence-agreement is prohibited. Standards Australia Limited does not warrant or represent that the draft document is accurate or complete or that it should be relied on for any particular purpose. Any user of the document should rely on the final published version. iii DR AS/NZS 3500.0:2020

Preface

This document was prepared by the joint Standards Australia/Standards New Zealand Committee WS-014, Plumbing and Drainage, to supersede AS/NZS 3500.0:2003, Plumbing and Drainage, Part 0: Glossary of terms. The objective of this document is to specify the common plumbing and drainage terms and

associatedregulatory documents.definitions that are used in areas of the plumbing and drainage sector including product manufacturing specifications, design and installation standards (such as the AS/NZS 3500 series) and This revision was conducted to ensure consistency between other documents and incorporate amendments and additions arising from industry requirements. A list of all parts in the AS/NZS 3500 series for plumbing and drainage can be found in the Standards Australia and Standards New Zealand online catalogues. . PUBLIC COMMENTING DRAFT

Contents

Preface...... iii 1 Scope...... 1 2 Normative references...... 1 3 Terms and definitions...... 1 . PUBLIC COMMENTING DRAFT

Australian/New Zealand Standard

Plumbing and drainage Part 0: Glossary of terms

1 Scope

Thisstandards document (such specifies as the AS/NZS common 3500 plumbing series) andand regulatorydrainage terms documents. and associated definitions used in the plumbing and drainage sector including product manufacturing specifications, design and installation It is primarily intended for the general water and waste industries and for use in the interpretation of terminology used in the various parts of the AS/NZS 3500 series.

2 Normative references There are no normative references in this document.

3 Terms and definitions

DRAFTING NOTE: This glossary has been edited without allocating numbers to terms which would enable the term groupings to be clear. As this is a manual task, this will be done post-Public Comment. Please concentrate on the term and its meaning, not its position. . ablution trough See trough absorber See solar water heater—terms absorption pit soakaway

and usually covered with earth, where liquid may soak away into the ground pit, trench or well dug into permeable ground, filled with broken stone, bricks or large granular material absorption test See test

access chamber See chamber access cover See cover access fitting See fitting PUBLIC COMMENTING DRAFT access opening

opening in a building element, fitted with a removable cover, to allow maintenance of a concealed pipe, fixtureaccess pipeor other apparatus See pipe

access point place where access may be made to a drain for inspection, cleaning or maintenance; may include an inspection point, rodding point, inspection chamber or access chamber

accessible capable of being reached for the purposes of inspection, maintenance, repair, or replacement, but may

firstSee also require readily removal accessible of an access panel, cover, door or similar obstruction

adaptor fitting See fitting aeration system system designed to treat liquid waste by the processes of air injection

aerator

device to introduce air into the flow of a liquid aerobic

stateaerobic where treatment free oxygen system is present See aeration system .

against-pitch installation See solar water heater — terms air admittance valve See valve air chamber See chamber air cooling equipment See cooling equipment air eliminator device which opens to release accumulated air from a hydraulic system and automatically closes in the presence of a liquid

air gap unobstructed vertical distance through the free atmosphere between the

outlet or waste unobstructed pipe and thevertical overflow distance level ofthrough the receptacle the free into atmosphere which it is dischargingbetween the PUBLIC COMMENTING DRAFT

lowest opening of a water service pipe or fixed outlet supplying water to a fixture or receptacle and the highestair separation possible distance water level of such fixture or receptacle distance between the outlet of the inlet valve and the spill level

air test See test air valve See valve

air venting

allowingpressure air vessel to enter or escape from a confined space to facilitate movement accumulator tank vessel in which water is stored under pressure of compressed air

Note 1 to entry: The vessel forms part of a pumped water supply system.

Note 2 to entry: Variations in the amount of water stored are accompanied by variations in the pressure of the air and can be used to control the stopping and starting of the pumps.

airlift method of raising liquid by the injection of compressed air

airlift pump See pump

airlock <1> airspace with doors separating a water closet or urinal apartment and an adjacent room

<2>allowable air in a maximum pipe that stops operating the flow pressure of liquid in a pumping or gravity circuit See pressure . allowable test pressure See pressure alteration

anaerobic addition or extension

stateanchor where blocks free oxygen is absent thrust blocks blocks, usually of concrete, placed at intervals and at changes of direction along a pipeline to prevent pipe movement

anchorage

meansangle of of fitting preventing movement of pipes or fittings that are subject to unbalanced forces See fitting angle of inclination See solar water heater — terms PUBLIC COMMENTING DRAFT annual exceedance probability AEP

in any one year probability that a given total (quantity) of rainfall, accumulated over a given duration, will be exceeded AEP is based on statistical analysis of rainfall records. Note 1 to entry: AEP is expressed as a percentage, which may be an intensity (mm/h) or a depth of rainfall (mm).

anode negative electrode of a galvanic couple that corrodes preferentially to the positive electrode (cathode)

appliance

equipmentapparatus designed to connect to a plumbing system to perform a specific task technical equipment used to perform a particular activity or installed for a purpose

aqueduct water supply channel

Note 1 to entry: The aqueduct will be vested in, belong to, or be under the control of the responsible authority.

arrestor apparatus designed to intercept and retain silt, sand, oil, grease, sludge or other substances that are a prohibited discharge to the sewerage or drainage system

atmospheric vacuum breaker See backflow prevention device authority See regulatory authority autoclave See sterilizer autogenous welded joint See joint . automatic cistern See flushing cistern automatic flush tank See tank automatic hand washing station

unitautopsy which table automatically mixes water, soap and air for hygienic hand washing the sanitary plumbing system fixture upon which post-mortem examinations are performed and which has provision for drainage to auxiliary pressure-relief device

temperature and pressure relief valve pressure-operated device forming part of an expansion control valve, temperature-relief valve, or Note 1 to entry: In the event of blockage of the drain outlet, the device should provide —

(a)(b) exsafetypansion relief relief (temperature-relief (expansion-control valves); valves); or PUBLIC COMMENTING DRAFT

(c)auxiliary bo waterth expansion heater and safety relief (temperature/pressure-relief valves). See water heater average flush volume

one full-flush discharge volume and four reduced-flush discharge volumes

average recurrence interval ARI

a given duration mean or expected value of the periods between exceedances of a given rainfall total accumulated over generally random. Note 1 to entry: ARI is an average value based on statistical analysis. The periods between exceedances are

back fall See fall back-siphonage

reversalbackfill of flow of water caused by negative pressure in the distributing pipes of a water service or supply See fill backflow

unintendedbackflow condition flow of water from a potentially polluted source into a potable water supply

situation whereby backflow may occur backflow prevention device .

deviceatmospheric to prevent vacuum the reverse breaker flow of water from a potentially polluted source into a potable water supply

deviceNote 1 to prevententry: The backflow device operatescaused by automatically back siphonage, to admit incorporating air into the a downstreamventilation valve chamber of the valve whenever the pressure in the chamber reduces to or falls below atmospheric pressure.

double check valve

operating force loaded non-return valves device to prevent backflow caused by back-siphonage or backpressure with two independently

Notedual 1check to entry: valve The device incorporates specific test points for in-service testing.

operating force-loaded non-return valves device to prevent backflow caused by back-siphonage or backpressure with two independently dual check valve with atmospheric port

independently operating force-loaded non-return valves device to prevent backflow caused by back-siphonage or backpressure with a ventilation port and two Note 1 to entry: The ventilation port and non-return valves prevent backpressure when operative and automatically admit air to the chamber between the non-return valves when the upstream non-return valve becomes inoperative. PUBLIC COMMENTING DRAFT hose connection vacuum breaker

that operates automatically to admit air into the system under back-siphonage conditions and vents the devicesystem fitted to atmosphere to a hose-tap under to preventbackpressure backflow conditions in a water reticulation system caused by back-siphonage pipe interrupter device

non-mechanical backflow prevention device with a permanent unrestricted air inlet, installed so that the flow of water is in a vertical downward direction

pressure type vacuum breaker

automatically to admit air into the downstream chamber of the valve whenever the pressure in the devicechamber to reducesprevent tobackflow 7 kPa caused by back-siphonage with a force-loaded ventilation valve, operating

Notereduced 1 to entry: pressure The device zone deviceincorporates specific test points for in-service testing.

system with two independently operating force-loaded non-return valves device to prevent backflow caused by either back-siphonage or backpressure in a water reticulation Note 1 to entry: The device automatically drains to waste whenever the pressure in the system between the upstream and downstream non-return valves reduces to a pressure not less than 14 kPa below the pressure at the inlet to the upstream non-return valve.

Noteregistered 2 to entry: air The gap device incorporates specific test points for in-service testing.

a regulatory authority for the purposes of inspection and maintenance to ensure its continued devicefunctionality or system installed for backflow prevention that has been registered by, or on behalf of, registered break tank

of, a regulatory authority for the purposes of inspection and maintenance to ensure its continued tankfunctionality system designed specifically for backflow prevention that has been registered by, or on behalf

testable backflow prevention device .

<1><2> backflowregistered prevention break tank device or a registered that is provided air gap with test taps for the purpose of testing its operation

backnut nut that retains surface-mounted tapware

backpressure difference between the pressure within any water service and a higher pressure within any vessel or pipework to which it is connected

bain-marie device designed to keep food warm for serving by placing the food in a container that sits on a specially designed tray for heating water

ball joint See joint ball valve See valve band clamped sleeve joint

PUBLIC COMMENTING DRAFT See joint bar sink See sink barrel longitudinal section of pipe that does not include the jointing portion

barrel nipple See nipple

barrel union

fittingbasement for connecting together and disconnecting two pipes

floorbasin space of a building that is substantially or wholly below the level of the adjoining ground surface

fixturea vanity for top holding water for ablutionary purposes, which may be designed for mounting in a corner, mounted on a floor supported pedestal, attached to a wall by means of brackets and screws, or set in

bath

treatment purposes fixture for containing water in which the human body may be immersed for ablutionary or eye (wash) concave receptacle consisting of a small bowl with jets of water controlled by a hand or foot operated valve

foot bath

bathshower fixed bath at a low level for washing or soaking feet bath combined with a shower outlet

spa bath . bath with the facility for injecting air and jets of turbulent water into water contained in the bath

therapeutic bath appliance in which the human body may be immersed in water for ablutionary or treatment purposes

Note 1 to entry: The appliance may include but is not limited to, integral components that control the inflow and outflow of water, and water temperature. bathroom appliance

connection to the plumbing infrastructure product that integrates dedicated fixtures appliances and fittings into a functional unit for easy bath and shower connector

the effects of thermally induced movement, or both fitting that is interposed between a fixture outlet and a waste trap to facilitate installation or attenuate batter permanent outward fall in the walls of a urinal slab or stall to ensure adequate cleansing of walls

PUBLIC COMMENTING DRAFT bearing capacity slope of the sides of an excavation safe load, per unit area, that the soil can carry

bedding material placed beneath and around a pipe to provide support for the pipeline

bedpan macerator

fixture to macerate papier-mâché single-use receptacles and their contents in a sanitary manner Note 1 to entry: It incorporates an internal flushing and sanitizing cycle after every usage.

bedpan washer sterilizer

sanitary fixture in which bedpans and urine bottles may be emptied or cleansed Notebelled 1 to end entry: joint It incorporates a flushing apparatus and may also be a sterilizer. See joint bench

<1><2> floorsteps area cut into of a thechamber side of graded an open to pit the or channel trench <3> countertop or sink bench

bend

shortinspection length opening of pipe or bend a manufactured fitting used to make a change in direction in pipework sanitary drainage bend that incorporates an inspection opening

long bend pipe bend having a centre-line radius of curvature equal to or greater than 3 times its internal diameter

pan bend .

soilEXAMPLE pipe bend WCterminating pan. in a socket to receive the spigot of a sanitary fixture reducing bend

fittingreturn in bend the form of a bend in which the internal diameter is reduced pipe used to change direction by 180°

short bend pipe bend having a radius at the centre-line equal to or less than its internal diameter

spring bend

pipe or fitting used to change direction by less than 90° bib tap See tap bidet

of the pan, which can be applied to the body sanitary fixture equipped with a douche device for producing a jet of water, from a point below the rim PUBLIC COMMENTING DRAFT bidette

sanitaryblank flange fixture equipped with a douche but with over rim type water outlets, providing an airgap See flange blue metal crushed graded quarry stone, which does not disintegrate over time

boiler See water heater boiling water unit apparatus for providing a supply of boiling water

bolted gland joint See joint bonded glued or adhered

boss

connectionpipe boss on a vessel, pipe or fitting, provided to facilitate the connection of a pipe or fitting short length of pipe with one or more bosses

screwed boss

fitting for attachment to the plate of a vessel, having an external or internal thread for the connection of a pipe, pipe fitting, valve, tap, immersion heater or other accessory bottle trap See trap . boundary trap See trap boundary trap riser

the drain for inspection, cleaning and maintenance purposes vertical shaft that extends the inlet leg of a boundary trap to ground surface level to provide access to Note 1 to entry: The riser may be sealed with an airtight cap or terminate as a ground vent.

bracket projecting support for a shelf, pipe or other part

branch drain See drain branch pipe See pipe branch vent See vent brazed joint See joint

PUBLIC COMMENTING DRAFT brazing

space between closely adjacent surfaces of the parts to be joined process of joining metals in which a molten non-ferrous filler metal is drawn by capillary action into the temperature of the metals being joined. Note 1 to entry: The melting point of the filler metal is normally above 500 °C but always below the melting brazing alloy non-ferrous alloy, applied in the molten state, for joining together metal components by brazing

break pressure tank See tank break tank See tank brittle failure

deformation visible to the naked eye (normal or corrected vision) type of failure of the material in pipe form during pressure testing, where the pipe exhibits no plastic bronze welded joint See joint bucket pump See pump built-in sink See sink butterfly valve See valve bypass

alternative path for diverting the flow of liquid around instead of through a fitting or apparatus

. calorifier apparatus for indirect heating of water in a vessel, the source of heat being a separate coil of heated pipes immersed in the water

cap and lining

fitting being a sleeve, one end of which is suitable for connection to another fitting or component and the other end having a shouldered end and loose coupling nut to connect to a threaded fitting capacity cistern capacity volume calculated by measuring up to the marked water level

pump capacity nominal storage capacity in litres

storage tank capacity volume of water above the invert of the outlet pipe when the water surface in the tank is 20 mm below

thestorage overflow water level heater capacity nominal storage capacity in litres PUBLIC COMMENTING DRAFT vessel capacity

maximum volume capable of being contained in a vessel capillary fitting See fitting capillary joint See joint

cast

alloy in a mould general term for products at or near finished shape formed by solidification of a molten metal or cathodic protection method of protecting a metal against corrosion by lowering the potential of the metal surface by means

ofcaulked an impressed joint current or by connection to a sacrificial anode See joint cavitation formation, growth and collapse of vapour cavities in a liquid following a drop in pressure

Note 1 to entry: The drop in pressure is usually associated with a large local increase in velocity, as in a pump.

cement mortar joint See joint central heating water heater See water heater centre-line radius radius (of a bend) measured to the centre line of the pipe

centrifugal pump See pump

chamber compartment or enclosed space for air or water usage

access chamber below-ground structure with a sealed cover constructed in the line of a sanitary drain to facilitate maintenance of the drain

air chamber vessel that utilizes the compressibility of contained air to minimize shock due to water hammer when connected to a pressurized water system

flushing chamber

chamberinspection in whichchamber water for flushing is introduced into a drainage or sewerage system chamber constructed in a drainage system to facilitate inspecting, testing or clearance of obstructions

precast chamber pre-constructed facility in a drain or sewer to provide access for inspecting or testing purposes or for the clearance of obstructions

Note 1 to entry: It consists of a chamber that is accessible through a removable cover. PUBLIC COMMENTING DRAFT pressurized chamber enclosed space where the pressure is above atmospheric pressure

side entrance chamber chamber constructed so that the access shaft is not directly over the sewer line and in which access to

the sewer is obtained by a passage or an extension to the chamber

chamber base

floor section, commonly cast in situ, that provides a base for the wall sections of the chamber and containschamber the cover flow slab channels precast unit for installation on top of the wall sections to act as the top of the chamber and upon which the height-adjustment rings and cover are located

chamber height adjustment ring unit acting as a spacer between the cover slab and cover to enable the level of the cover to be adjusted to

matchchannel the surrounding finished ground level open graded passage for the conveyance of liquids

charge pipe See pipe chase

narrowcheck valve channel formed in a wall or floor for recessing a pipeline below the surface See non-return valve chemical water closet pan See water closet pan

chlorination . addition of chlorine for disinfection

circulation pipe See pipe

cistern tank in which water is stored at atmospheric pressure

incorporating an air gap. Note 1 to entry: Water is normally received through a float control valve set at a predetermined level and flushing cistern cistern that is capable of discharging a measured quantity of water, either automatically at intervals regulated by the rate at which water is fed to the cistern or by manual operation of the

flushingwater closet mechanism cistern

flushing cistern designed to be installed in conjunction with a WC pan, which incorporates a mechanism (normally a float control valve) to control the water level

PUBLIC COMMENTING DRAFT intended designed to operate for concealed directly coupled installation to the in water a wall, closet duct panor cavity or other soil waste fixture designed to operate when the dimension from the base of the cistern to the top of the pan is not less than 550 mm designed to operate when the dimension from the base of the cistern to the top of the pan is less than 350 mm

cistern in which the flush is activated by a manual operation, and capable of giving flushes of two different volumes, either of which can be selected by the user

cistern in which the flush is activated by a manual operation, and which is capable of giving designed only toone operate flush volume when the dimension from the base of the cistern to the top of the pan is between 550 mm and 350 mm

cistern fed water heater See water heater class

cleaners’ allowable sink operating pressure expressed in hundreds of kilopascals See sink cleaning eye

small access opening in a pipe or pipe fitting positioned to facilitate the clearing of obstructions and fittedclip fastener with a removable and resealing cap or plug related items fixing arrangement designed to bolt, screw, fasten or otherwise fix or mount plumbing products or close coupled solar water heater See solar water heater

close coupled water closet pan . See water closet pan close taper nipple See nipple closet See water closet closing temperature

temperatureclothes washing at the machine inlet of the valve that first allows it to close appliance for washing laundry which uses water

coating

protectivecoating defect material applied to the surface of a pipe, fitting or valve detectable weakness or discontinuity in a coating, which is deemed to be suspect in its ability to protect the substrate from corrosion during its normal service life

cold water water that has not been intentionally heated PUBLIC COMMENTING DRAFT

collar

pipedouble fitting collar in the form of a sleeve, for jointing the spigot ends of two pipes in the same alignment arrangement for joining two spigot ends of pipe

finishing collar

fitting for attachment to the riser of an external disconnector gully into which a grating can be seated

split collar

repair collar manufactured in two pieces and fixed together along the longitudinal axis of the fitting collector See solar water heater — terms collector aperture See solar water heater — terms combination relief valve See valve combined pipe See pipe combined stack See stack combined tap See tap commercial fixture or appliance

fixturecommon or dischargeappliance designed pipe for use in commercial situations See pipe . common effluent drainage system

systemcommon for vent collecting and removing effluent from a group of properties See vent compaction process of consolidating soil or other materials by mechanical or other means

compatible material material that does not adversely interact with other materials with which they are in contact

component part or sub-assembly of parts that contributes to the construction of a larger assembly or system

compounds either pre-compounded ABS resins or ABS resins to which masterbatch, containing additives such as

UVcompression inhibitors heatfitting stabilizers and antioxidants, have been added See fitting compression joint See joint PUBLIC COMMENTING DRAFT compressive strength bearing strength of concrete

concrete surround

concrete margin around a valve box cover, hydrant cover or similar device concrete encasing of a pipe or fitting

condensate liquid condensed from a vapour

conductivity measure of the concentration of dissolved solids

Noteconduit 1 to entry: It is usually expressed in microsiemens/cm. pipe or other closed passage, for the conveyance of liquids

connection

<1> short section of pipe connector which joins the supply pipe to a fixture <2>contaminant servicing of a property with water supply or sanitary drainage or effluent disposal solids, organisms, liquids or gases entering, or with the potential to enter and pollute, the potable water supply

contaminated area areas subject to bacterial or chemical pollution EXAMPLE Ash pits, tanks, ponds, manure bins, waste disposal depots and wastewater treatment works.

contamination of water test See test

contingency reserve . water held in storage for use in the event of an interruption to the normal supply

continuously supported pipe

pipe placed on a cradle extending the length of the barrel with the cradle following the contour of the pipe pipe to laida defined with socket height holes dug into the bedding material providing support to the pipe between sockets

controlled-pressure water heater See water heater

cooling equipment facility designed to cool a medium, but not including air-conditioners

air-cooling equipment equipment that is intended to lower the temperature of air

water-cooling equipment equipment that is intended to lower the temperature of water but not water-cooled drink dispensers

PUBLIC COMMENTING DRAFT cooling facility

facilitycorbel waterdesigned closet to lower pan the temperature of trade waste or water sufficiently before being discharged See water closet pan corrosive area environment, usually below ground, where substances are present which are corrosive to metallic components

coupling

fittingbayonet used coupling to connect pipes, fittings or fixtures

fittingbayonet used expansion to connect coupling discharge hoses from portable facility to a soil dump point coupling that permits longitudinal movement of the joined parts (relative to each other)

Notebayonet 1 to entry:flexible Longitudinal coupling movement is caused by expansion and contraction due to temperature change. coupling that permits movement of the connected pipework out of its original alignment or permits the jointing of components that are not aligned

gibault coupling coupling that uses mechanical means and rubber seals to affect a joint between two pipes in the same alignment

hose tap coupling coupling that is attached to the inlet end of a hose and has a loose threaded nut for attachment to a hose tap

insulating coupling . pipe fitting that breaks the electrical continuity between adjacent pipes, fittings or fixtures cover <1> apparatus consisting of a removable lid and a lid support usually installed at ground level

<2>access vertical cover distance between the top of the pipe and the finished surface removable cover to provide access for cleaning or inspection

fire hydrant cover

boxinspection fitted for opening ready access cover to a fire hydrant cover for protecting and providing access to a below-ground inspection opening

valve cover cover for locating, protecting and providing access to a valve arrangement

cover chamber space above the operating mechanism in which the water pressure is applied to close the valve or relieved to open the valve

PUBLIC COMMENTING DRAFT cradle structure for supporting a pipe or apparatus from beneath and from the sides

cross-connection actual or potential connection between a water supply and any contaminant

cross-fitting See fitting

cross-linked polyethylene PE-X structures within the polyethylene polymer chains that are interconnected by chemical bonds to create a three-dimensional polymer network

Note 1 to entry: The properties of the three-dimensional structure ensure that it is not possible to melt or

dissolve the polymer. The extent of cross-linking is related to the mass of insoluble material remaining following solventcross-pitch extraction installation and can be determined by measurement of the gel content. See solar water heater — terms cross-vent See vent crown

highestcrown of point trap on the external surface of a pipe or culvert at any cross-section topmost point of the outlet leg of a trap

croxed fitting See fitting croxed joint See joint cyclic actuator device capable of activating the product under test through the cycles of movements, to simulate normal . usage over a relatively short period of time

dashpot

or damping vibration in the valve and the associated connected pipework system device, usually an integral component of a valve, designed for the purpose of reducing the fluid velocity dead leg

sections of pipe that do not allow the water in the pipe to circulate and/or flow Note 1 to entry: branch for example,pipe in a wherewater fixtures service havecontaining been deleted dead andwater pipes capped at the point of use. any branch off a heated water circulatory system

dead water

water> water cold that water incapable drawn of off being before flushed heated from water cold watercommences services to discharge from a heated water outlet

delayed action float valve PUBLIC COMMENTING DRAFT See valve

dental dental console chair and associated equipment required to perform dental work on a patient

dental cuspidor

fixture for use in a dental surgery for the reception of mouth washings

dental equipment

fixturedental evacuationor apparatus equipment for use in a dental surgery from the mouth of a patient into a catchment receptacle that permits liquid waste to gravitate from, or fixturebe forced designed to, a drainage to operate point below with oratmospheric without the pressure assistance and of remove water saliva and dental waste material dental unit

mobile or fixed piece of equipment usually with a chair or other accessories or utilities necessary for dental examinations depth of water seal vertical distance measured between the dip and the crown weir of a trap

design life

requiring major maintenance or replacement period of time, stated by the manufacturer, that a device or system is expected to perform without determined airflow capacity

airflow,developed in litres length per second, while producing a pressure of −250 Pa ± 10 Pa at the manometer tapping

totaldezincification length along the centre-line of a pipe and fittings including all bends . corrosion of copper or zinc alloys involving loss of zinc and leaving a residue of spongy or porous copper

dezincification resistant DR material that is not susceptible to corrosion of copper/zinc alloys involving loss of zinc leaving a residue of spongy or porous copper

diametral clearance annular clearance between the spigot and socket in a spigot and socket joint

diameter nominal DN numerical designation of size, common to all components in a piping system other than components designated by outside diameters or by thread size

Note 1 to entry: Nominal size is designated by DN followed by a number.

Note 2 to entry: It is a convenient round number for reference purposes and is only loosely related to manufacturing dimensions.

and ordered by outside diameter and thickness. Note 3 to entry: Not all piping components are designated by nominal size, for example, steel tubes are designated Note 4 to entry: Nominal size cannot be subject to measurement and is not to be used for purposes of calculation. PUBLIC COMMENTING DRAFT diaphragm pump See pump diaphragm valve See valve dip lowest position of the barrier within any trap that enables a water seal to be formed

disc clearance dimension

the disc to fully open without interference or damage to the disc sealing edge dimension equivalent to the minimum internal diameter of the adjacent pipe or flange which will allow discharge capacity

quantitydischarge of pipewater discharged from a flushing cistern See pipe disconnector gully See gully displacement water heater See water heater distortion

flawdomed that grating is visually obvious, and not requiring dimensional checking See grating domestic fixture or appliance

fixturedouble orair appliance valve that is designed for use in residential situations See valve

double bowl sink . See sink double check valve See mechanical backflow prevention device double collar See collar double socket See socket double wall heat exchanger See heat exchanger double Y junction See junction downpipe pipe to carry roof water from gutters and roof catchments to drains or storage tanks

downstream vent See vent

PUBLIC COMMENTING DRAFT drain line of pipes above- or below-ground level within the property boundary, including all

or trade waste fittings and equipment generally external to a building, intended to convey under gravity, sewage

branch drain

sectionof connection of a drain that is intended to receive the discharge of fixture discharge pipes but which has a lower fixture unit loading and which may be of smaller nominal size than the main drain at its point main drain main conduit of a drainage system to which branches are connected

Note 1 to entry: It is that portion of a sewerage service on private property that is normally located in the ground

anduntrapped which conveys floor ordrain is intended to convey the discharge from all fixtures to the sewer grated outlet to a pipe discharging to an outside location where it will not cause damage

drain tap See tap drainlayer person registered or licensed in the construction of drains

draw-off tap See tap drench shower See shower

drink dispenser . appliance which has a water supply or a waste connection, or both that makes or dispenses drinks EXAMPLE Water coolers, coffee making machines, cappuccino machines and other beverage dispensers.

drinking fountain

fixtureNote 1 to that entry: provides The supply a low of flowwater jet is ofcontrolled water from by a whichhand-operated the user or may foot-operated drink directly tap. drinking water water intended primarily for human consumption but with other domestic uses

drop junction See jump-up dropper vertical or near vertical water supply or sanitary plumbing pipework

dry (road) service property service installed beneath a roadway prior to the connection of the property to the water main

dry wall construction wall built without mortar

PUBLIC COMMENTING DRAFT dry weather flow

flowdry well in a sewerpump or drain under normal operating conditions when infiltration is at a minimum See pump dual check valve See backflow prevention device

duct enclosed area to accommodate pipework

ductile mode failure of material where macroscopic plastic deformation occurs

dye test See test eccentric taper fitting See fitting effective length

overalleffective length opening of a pipe or fitting measured along its centre line, excluding the depth of any sockets cross-sectional area of the water passage, either through the control valve nearest to the point of

discharge or of the pipe or fitting, whichever is the lesser Note(a) 1 to entry:the diameter The effective of a circle; opening or is expressed as — (b) the diameter of a circle of equivalent cross-sectional area where the opening is not circular.

effluent liquid discharged from a wastewater treatment process

egg-shelling .

with multiple fractures polygonal surface pattern on cement mortar lining resembling the crazing effect exhibited by eggshells ejector pot chamber of a compressed air sewage ejector into which sewage drains prior to being ejected by compressed air

elbow

pipeelbow fitting action for tap providing a sharp change of direction in a pipeline See tap

electronic tap See sensor tap elevated temperature temperature greater than 20° C

elevation head PUBLIC COMMENTING DRAFT See head end plug See plug end stop

fully open or closed position mechanical device, integral to the gearbox, that is designed to prevent the valve disc travelling past the

entry at grade junction See junction epoxy barrier coating system

limiting corrosion two-part epoxy resin that is applied to a metallic substrate in order to form a protective barrier for

Note 1 to entry: Epoxy barrier coatings are prepared for application using mechanically engineered metering andepoxy mixing resin methods to ensure mixing and dispensing controls to manufacturers’ specifications.

adhesive comprising two components which, when mixed in the correct proportions, react to harden theepoxy mixture resin and joint form a strong joint See joint equilibrium float valve See valve evaporative air-conditioner

appliance intended to provide a flow of air that has been cooled by the evaporation of water expansion expansion control valve See valve . expansion coupling See coupling expansion fitting See fitting expansion joint See joint expansion loop

temperature change loop in a pipeline which by flexing can accommodate expansion and contraction movements due to expansion vessel

system without discharging the water to the atmosphere vessel designed to limit the pressure due to the expansion of heated water in an unvented heated water expansive soil soil that undergoes volumetric changes due to variations in moisture content

external stormwater drainage network drainage network that collects and conveys stormwater from individual properties EXAMPLE Easement or inter-allotment drains, and street and trunk drainage systems. PUBLIC COMMENTING DRAFT extruded component

through a die of an appropriate contour component (at or near finished shape) produced by being forced from a closed container eye bath See eye wash

fabricated fitting See fitting fabricated assembly assembly where two or more components are joined during the manufacturing process and intended as a permanent joint

face-to-face dimension

distance between the valve mating faces, measured along the valve axis fall

differenceback fall in level between two points in the direction of flow

difference in level between two points in the opposite direction to the designed flow falling level water heater See water heater feed pipe See pipe ferrule rigid metal sleeve, one end of which is for jointing to the end of a soft metal pipe and the other end for insertion into a socket to enable a caulked joint to be made .

ferrule key See key ferrule tap See tap

fill backfill process of replacing soil in a trench after completion of the related plumbing or drainage work

ordinary fill

earthselected removed fill from the excavation or imported

specified material chosen for a particular application used to refill a trench or form an embankment filter apparatus used to separate solids from liquids

PUBLIC COMMENTING DRAFT finishing collar See collar fire drencher sprinkler system

heat-activated fire suppression system that sprays water on the outside surface of a building or structurefire hose reelto prevent the spread of fire from an adjacent burning building or structure

firefighting hose that is connected to a valved water supply and is wound on a reel

fire hydrant

fitting installed in a water pipeline with a valved outlet (above or below ground) to enable a controlled supplyfire plug of water to be drawn from the pipeline for firefighting or street flushing

fire hydrant (generally below ground) with identifying cover and marker, having provision for connectionpillar hydrant of a fire hydrant standpipe to permit operation of the outlet valve and connection of hoses providing an outlet for connection of hoses fully exposed (above-ground) cast iron fire hydrant with a control for operating the outlet valve and screwdown hydrant

fireabove hydrant ground (below-ground) with identifying cover and marker with a control for operating the valved outlet and to which hoses may be connected by using an extension piece so that the hose connection is spring hydrant valve in which a seal is achieved under normal operating conditions by a spring-loaded dome, operated in conjunction with a resilient seat

Note 1 to entry: The valve is generally operated by means of the attachment of a standpipe.

fire hydrant cover . See cover fire hydrant riser

standard depth, irrespective of the depth of the water pipeline short pipe with flanged ends supplied in varied lengths so that a fire hydrant outlet can be located at a fire hydrant standpipe

a connection for hoses portable pipe fitting for connection to a fire hydrant to operate the hydrant outlet valve and to provide Note 1 to entry: It may incorporate a booster valve assembly.

fire plug See fire hydrant fire service

service comprising water pipes, fire hydrants, fire hose reels, fittings, and water storage or pumping facilities that is solely for firefighting and extinguishing purposes in and around a building or property Note 12 to entry: UnderServices certain used forconditions, other purposes part of aare fire deemed sprinkler to be system water may services. be included.

PUBLIC COMMENTING DRAFT fire sprinkler service

with sprinklers that are automatically activated piping connected to a fire service designed to be kept charged with water under pressure and fitted armpiece

horizontal range or distribution pipe to which a maximum of two sprinklers are connected directly by a dropper, a candle stick, or a flexible tube assembly

candle stick

verticalcontrol rangeassembly pipe to which upright sprinklers are directly fitted distribution main

pipedistribution between pipethe control assembly and the first distribution pipe nearest the water supply pipe between a range pipe and a distribution main

dropper

verticalmanifold range pipe to which pendent sprinklers are directly fitted or connected by flexible tube assembly

piperange that pipe connects control assemblies or pumps in close proximity less than 500 mm pipe to which sprinklers or flexible tube assemblies are fitted that supplies pipes other than range pipes trunk main

pipe between the water supply (i.e. backflow prevention device) and each sprinkler control assembly fitting item placed in a pipeline for jointing, connecting or changing the direction or internal diameter of

the pipeline .

access fitting

straightadaptor extension fitting that incorporates a test or access opening end do not allow interconnection <1> fitting that enables the connection of other fittings or components whose normal jointing methods

<2>aerator fitting junction that incorporates fitting connection ends with different methods of jointing common discharge pipes, or stacks proprietary fitting connected to a reduced-velocity aerated system to connect graded discharge pipes, angle of fitting

observer angle formed by the longitudinal axis of the fitting and the axis of the branch or a change in direction when a fitting is viewed with the spigot downstream with the inspection opening

Note 1 to entry: The change in direction is read in a clockwise direction for right-hand fittings and an anti- clockwiseblank end direction fitting for left-hand fittings. PUBLIC COMMENTING DRAFT fitting with a closure to close off a pipeline while allowing for future opening and attachment of additionalcapillary fitting pipe or fittings by removal of the closure

fitting in which the joint is made by the application of heat to cause the flow of filler metal by capillary actioncompression along the fitting annular space between the outside of the tube and the inside of the socket of the fitting nut fitting

outside of a pipe or against a manipulated end of a pipe fitting used to make a watertight joint in which the end of a pipe is held by compression either on the Note 1 to entry: The compressive effect is achieved by tightening the compression nut.

NoteType 2 1 to non-manipulative entry: The joint may fitting be olive, cone, flared or croxed type.

fittingNote 3 tofor entry: a compression The joint is joint made which tight bydoes means not requireof a loose any compression working of ring the which tube gripsother the than outside cutting wall square of the tube when the coupling nut is tightened.

a ring, cone, olive or sleeve. Note 4 to entry: Components of a Type 1 non-manipulative fitting used to grip the outside wall of the pipe include Type 2 manipulative fitting

fitting in which the joint is made by flaring, croxing, capping or beading the end of the tube which is then compressed by the coupling nut against the shaped end of the corresponding section in the fitting crimped fitting

pipe by means of a special tool fitting in which the joint is made by compression of the fitting and/or a ring on the outside wall of the

cross-fitting .

fittingcroxed having fitting four connection ends all lying in the one plane and separated by 90°

fitting where the joint is made by forming a raised circular section close to the end of the tube then compressedeccentric taper by the fitting coupling nut against the shaped end of the corresponding section in the fitting

reducerelectrofusion that maintains fitting level soffits in the adjoining graded pipes

fitting in which the joint with the pipe is made by melting together the outer part of the pipe and the inner part of the fitting Note 1 to entry: Joint is made by heat that is induced by current flowing in an appropriate resistor in the fittingexpansion body. fitting coupling that permits longitudinal movement due to temperature changes in the connected pipework

fabricated fitting

fitting constructed by joining together a number of components

PUBLIC COMMENTING DRAFT Notefitting 1 to with entry: incorporated The fitting when inserts assembled is designed to suit a specific purpose.

combined with weld ends for socket welding or electrofusion fitting in which the joint is made by connecting threads or other outlets inserted in the plastics body flanged fitting

together and sealed by the compression of an elastomeric sealing element between them fitting in which the pipe connection consists of two mating flanges that are mechanically pressed

flat seat union fitting

pressed together by means of a screwed nut or similar and sealed by the compression of an elastomeric fittingsealing inelement which between the pipe them connection consists primarily of two components that are mechanically

Noteleft-hand 1 to entry: or right-hand At least one fitting of the two components normally incorporates a flat sealing surface.

and with the inspection or testing opening facing the observer, the socket of the bend or the branch of bendthe junction or junction projects such to that, the whenleft or the right body respectively of the fitting is viewed with the direction of flow downward plastic waste fitting

fittingreducing made fitting from moulded or fabricated plastic material to convey liquid waste See reducer slip fitting

fittingsocket without weld fitting tube stop shoulders but with a bore that allows easy installation into existing pipework

fitting in which the joint with the pipe is made by melting together the other part of the pipe with the innerNote 1 part to entry: of the A heatedfitting tool is used to form the weld.

swivel fitting . coupling that permits angular movement between two components

taper fitting See reducer tee fitting

fitting junction with the branch entering the main pipe at 90° fixed pipe clip See pipe clip

fixture

in a discharge into the sanitary plumbing or sanitary drainage installation receptacle with necessary fittings designed for a specific purpose, the use or operation of which results soil fixture

fixtureEXAMPLE used toWa dischargeter closet excrementpan, urinal, slopand hopper,similar autopsy waste table, bedpan washer, sanitary napkin disposal unit. waste fixture PUBLIC COMMENTING DRAFT

fixture other discharge than a pipe soil fixture See pipe fixture outlet See outlet fixture pair

pair of adjacent waste fixtures of the same type with their outlets connected to the same fixture trap

fixture trap See trap fixture unit

unit of measure, based on the rate of discharge, time of operation and frequency of use of a fixture that expresses the hydraulic load imposed by that fixture on the sanitary plumbing installation flange

projecting flat rim or disc, with or without bolt holes, for attaching to or assembling on the end of the pipe,blank fitting flange or other component

solidinsulating disc with flange bolt holes for bolting to a flange to blank off the outlet of a pipe, fitting or vessel

pair of mating flanges designed to break the electrical continuity between adjacent pipes, fittingsloose flange or fixtures

flangepuddle not flange initially fixed to a pipe or fitting but free to be rotated or moved longitudinally weep flange

flange on a pipe, at the point at which it will pass through a water retaining or watertight structure to . increase the resistance to leakage along the exterior of the pipe flange backing ring

such as aluminium or plastics full-face ring used on the back of the flange face to reduce the bolt bearing load on soft flange materials flange joint See joint flanged pipe

suitable means pipe having a flange attached to one or both ends by welding, threaded connection or other flap valve See valve flared joint See joint flat offset See offset flexible coupling See coupling PUBLIC COMMENTING DRAFT flexible hose assembly

or similar, that is capable of being adapted or bent in any direction without damage hose intended for use between a pipework system and a fixture, fitting, valve, tap, appliance sleeve with secured end connectors to ensure watertightness. Note 1 to entry: The flexible hose assembly may consist of an inner liner and an outer reinforcement braid or

hose made from elastomeric or thermoplastic material in contact with a fluid

flexible joint See joint flexible mechanical joint See joint flexible pipe See pipe float buoyant device (often spherical) used to activate a mechanism by its response to a rise or fall of the

surfacefloat valve of a fluid See valve flood level rim

lowestfloor grate part of the top edge of any fixture from which water will spill when full See grate floor level

verticalNote 1 to distance entry: Floor between level is two used adjacent when determining floor structures the height of a stack. floor waste See waste . floor waste gully See gully flow controller

deviceflow pressure to regulate the flow rate so as to maintain a constant flow rate over a given range of pressures See pressure flush pipe See pipe flush pipe connector

jointingflush valve device used to make a watertight seal between the flush pipe and the inlet of a sanitary fixture See valve flusherette See flush valve flushing chamber See chamber PUBLIC COMMENTING DRAFT flushing cistern See cistern flushing surface

internal surface of a soil fixture or urinal face/bowl below the inlet point or flushing rim wetted during theflushing flushing tank operation See tank

flushometer See valve-flush valve food waste disposal unit electrically operated mechanical device for reducing kitchen food waste into fragments small enough

tofoot be action flushed tap into the drainage system See tap foot bath See bath foot valve See valve footpath tap See tap force pump See pump forced circulation

other mechanical means circulated flow in any primary, secondary, or supplementary circuit created by the use of pumps or forged

wrought product formed by hammering or pressing usually while hot between open dies (hand forged) . or closed dies (drop or die forged)

foul water contaminated or non-drinkable water

free acting

valvefree-end without testing external condition influence on opening or closing the disc

testing condition for a flanged pipe or fitting whereby the flanged end(s) under test are fitted with a blanking piece without external restraint Note 1 to entry: The arrangement of the seal between the flange and the blanking piece is designed to result in a loadfree transfer outlet water equivalent heater to that intended to be used on site, i.e. raised face flanges. See water heater freestanding pump See pump freestanding waste See waste

PUBLIC COMMENTING DRAFT free water outlet See outlet fresh sewage See sewage friction locked joint See joint

friction loss head See head frost heave arching of soil due to the freezing of in-ground water or moisture

fuel gas fuel that is supplied through pipes or in containers and is a gas at a temperature of +15 °C and an absolute pressure of 101.325 kPa

full way valve See valve fully vented modified system

discharging to the same branch pipe, are vented in common by one or more group vents system of sanitary plumbing where the traps of any group of two or more fixtures or floor waste gullies, fully vented system

system of sanitary plumbing with provision for the separate ventilation of every fixture trap connected (otherfusible than plug fixtures discharging to a floor waste gully) and of the trap of every floor waste gully See plug fusion welded joint See joint

galvanic corrosion . type of corrosion that occurs when two dissimilar metals are in contact in a moist environment

Note 1 to entry: Corrosion of more reactive metal is accelerated by the presence of less reactive metal.

gasket deformable material, often preformed, used to make a watertight and airtight joint between two mating surfaces

gate valve See valve geotextile fabric permeable fabric used with foundations, soil, rock, earth, or any other geotechnical engineering-related material used as an integral part of a project

gibault coupling See coupling gibault joint See joint gland device for preventing the escape of water from a valve or pump along the surface of the spindle or shaft

PUBLIC COMMENTING DRAFT gland nut nut that contains and compresses the packing around a stem, spindle or shaft

gland packing

materialgland sleeve inserted into the stuffing box to prevent leakage of fluid

sleeve with flanged upper edge or retention shoulder, which may be tightened down onto a packed gland

gland stuffing box annular space within the body of a component around a stem, spindle, shaft or housing, to contain the gland packing

glass washing machine machine designed to wash and rinse glasses

globe valve See valve grade gradient

inclinationgraded jump-up expressed as the ratio or percentage of unit rise to horizontal distance See jump-up graded offset See offset graded pipe See pipe gradient See grade

grate .

sanitaryfloor grate or stormwater fitting consisting of a frame holding a grating

grateoutlet fitted grate to a sanitary or stormwater fitting positioned within a graded floor removable raised grating to prevent entry of foreign solids into the waste pipe

grating framework of parallel or crossed bars or a plate having holes or slots to prevent ingress of large solids

domed grating

grating with a convex upper surface gravity main See main grease arrestor See arrestor

PUBLIC COMMENTING DRAFT grease trap See arrestor ground level surface of the earth at a site

ground vent See vent

ground water water occurring naturally in the subsoil

group vent See vent

gully assembly used in a wastewater system that provides a water seal to prevent odours and gases from

escapingdisconnector into a gully building or into the atmosphere in the proximity of the assembly DG

between waste discharges and the remainder of the sewerage system gully for use with a riser pipe and inlet fitting to provide disconnection by means of a water seal floor waste gully FWG

disconnector gully installed inside a building for use with a floor grating or waste outlet fitting on a riseroverflow pipe reliefand with gully provision for connection of waste pipes for fixtures ORG

self-cleansing trap with a suitable loosely fitted grating located above ground level for the relief of any possible surcharge and as a measure of protection against overflow from a drain . gully riser

pipegunmetal extending from a gully copper-based alloy containing additions of tin and zinc, which may also contain lead (leaded gunmetal)

gutter box gutter graded channel (generally of rectangular shape) located within the building to convey rainwater

Noteeaves 1 togutter entry: The box gutter may include a gutter adjacent to a wall or parapet.

valley gutter

hardness property of water which resists the lathering of soap

PUBLIC COMMENTING DRAFT Noteo 1 t entry: Water hardness is caused by certain mineral salts, principally calcium and magnesium, dissolved

of solution. in the water. It can be expressed chemically as the concentration of calcium carbonate in milligrams per litre permanent hardness hardness attributable to presence of mineral salts that cannot be removed by boiling

Note 1 to entry: It is caused largely by the presence of calcium and magnesium sulphates and chlorides.

temporary hardness hardness that can be removed by boiling

Noteo 1 t entry: It is caused largely by the presence of calcium and magnesium bicarbonates, which are converted to insoluble carbonates at high temperatures.

total hardness combination of temporary and permanent hardness

head

total energy possessed by a unit weight of fluid due to its elevation, pressure, and velocity Noteelevation 1 to entry: head It is expressed as a height in metres of fluid.

headfriction possessed loss head by a fluid due to its elevation and expressed as a height of fluid above a datum

loss of head in a fluid moving through a conduit Note 1 to entry: The energy lost due to the fluid viscosity, the flow regime, i.e. laminar or turbulent, the length of themaximum pipe, surface head roughness and function of fittings, valves and other system structures.

maximum working water pressure to which a product is to be subjected . Notepressure 1 to entry: head This is expressed in metres of water or kilopascals. P

head possessed by a fluid due to its pressureHp and calculated using the equation — Note 1 to entry:P It is expressed as a height H = p ρ g

where ρ = density and g = gravitational acceleration. static head measure of the at-rest pressure in a hydraulic system

Note 1 to entry: In a gravity system, static head is the difference in elevation between a reference point and the water surface.

velocity head

head possessed by a fluid due to its velocityHv) and calculated using the equation — Note 1 to entry:2 It is expressed as height ( HVv = / 2g PUBLIC COMMENTING DRAFT where

g = gravitational acceleration.

V = velocity working head

pressure head that a component (e.g. fitting) is designed to operate at, or is subject to, during service

head loss

differenceheader vent in head in a fluid between two points See vent heat exchange solar water heater See solar water heater heat exchange water heater See water heater

heat exchanger apparatus for transferring heat from a heat source to water contained within a coil or storage cylinder See also calorifier double wall heat exchanger

heat exchanger in which two distinct and separate walls separate the drinkable water from the heat transfersingle wall fluid heat exchanger

heat exchanger in which only one wall separates the drinkable water from the heat-transfer fluid . heated water hot water warm water water that has been intentionally heated

heated water reticulation parts of the installation, including equipment and materials necessary to provide a supply of heated

water at the specified outlets Noteheated 1 to water entry: serviceThis excludes the water heater. water service in which the water supplied to the draw-off points is heated by a primary heat source such as solid fuel, gas, electricity or oil parts of the installation, including the water heater and all equipment and materials

necessaryto provide water a supply service of heated in which water the at thewater specified supplied outlets to the draw-off points is heated by

aheat calorifier transfer medium medium, including all additives present under operating conditions, used to transfer thermal energy PUBLIC COMMENTING DRAFT hexagon nipple See nipple high-capacity overflow device

overflowhigh level device vent associated with an internal box gutter and sump See vent

hoop stress stress in a pipe under pressure acting tangentially to the perimeter of a transverse section

horizontal branch

vertical sections or branches), receiving the discharge from one or more waste pipes or soil pipes, and partconducting of a soil it pipeto the or soil waste stack pipe, or waste extending stack laterally from a soil stack or waste stack (with or without horizontal stub pan connector

fittingNote 1 todesigned entry: It as connects an adaptor directly for useto the with integral one or spigot more end matched of the pan WC to pans enable the pan to be used in S-trap, P-trap and side inlet situations.

hose assembly

assembly that is capable of being flexed or bent in a specified direction without damage and is intended forNote use 1 toas entry:part of The a pipework hose assembly system may to consistconnect of a an fixture, inner fitting,and an outervalve, reinforcement appliance or similarbraid or equipment sleeve with

securedhose connected end fittings spraying to ensure apparatus watertightness. See spraying apparatus hose connection vacuum breaker See backflow prevention devices hose tap See tap . hose tap coupling See coupling hospital sink See sink hot discharge discharge having a temperature of 40 °C or higher

hot poured joint See joint hot pressed See forged hot-dip coating process used to protect against corrosion in which articles are dipped into the molten coating

protective coating material and, on withdrawal, are allowed to drain and cool with consequential solidification of the hot-dip galvanizing process by which iron or steel is immersed for a short period in molten zinc for the purpose of applying

PUBLIC COMMENTING DRAFT a zinc coating to provide protection against corrosion while in service

heated water supply temperature differential differential of the supply temperature of the heated water above the set temperature of the valve that is

requiredhousehold for water efficient heater operation See water heater

hydraulic gradient

loss of head in liquid flowing in a pipe or channel under steady conditions Note 1 to entry: This is expressed in unit head loss per unit length of the pipe or channel.

Notehydraulic 2 to entry: ram In a channel, hydraulic gradient is equal to the slope of the free surface of the flowing liquid. See pump hydrostatic design stress estimated hoop stress due to internal hydrostatic pressure that can be applied continuously at a

specified temperature with a high degree of certainty that failure will not occur year long-term hydrostatic stress value. Note 1 to entry: Estimated hoop stress is obtained by the application of a safety factor to the extrapolated 50- hydrostatic test See test ice maker appliance with a water connection that manufactures ice

Note 1 to entry: It may have a connection to the drainage system.

Note 2 to entry: Refrigerators that contain an ice making unit as a component are not included.

in the field

plumbing operations performed under site conditions on the job rather than under the more controlled . environment of a workshop or factory

inert catchment rainwater collection area whose dominant material has little or no effect on the chemical composition of rainwater draining from it

alloy-coated steel, glass, glazed tiles, unplasticized polyvinyl chloride and prepainted metal. Note 1 to entry: Dominant materials include acrylic, fibreglass, aluminium/zinc and aluminium/zinc/ magnesium inline booster water heater installed downstream of a solar preheater to enable the water temperature to be boosted before the water is delivered into the heated water pipework

in-line tap See tap inclined jump-up See jump-up induced siphonage loss of water from a trap by siphonage caused by a reduction in pressure at the outlet of the trap

induct vent See vent PUBLIC COMMENTING DRAFT infiltration unintended ingress of water into a drainage system

inflow See infiltration

inlet pit chamber with an inlet that permits the entry of stormwater to a stormwater drain and allows access to the drain for maintenance purposes

Note 1 to entry: The inlet may be side entry, grate or combination.

input stop

adjustablethe valve is mechanical in the fully opendevice, or independent closed positions of the gearbox (located between the input spindle and the gearbox), designed and set to prevent the transmission of excessive input torque to the gearbox when insertion depth entry depth required distance past the seal that a pipe is inserted into a socket to provide satisfactory sealing

inset sink See sink inside wall thickness thickness of the wall section in direct contact with the medium being transported

insolation See solar water heater — terms inspection cap

removableinspection airtight chamber cap fitted over a boundary trap riser or inspection shaft . See chamber inspection junction See junction inspection opening IO

access opening in a pipe or pipe fitting, arranged to facilitate inspection testing or the clearing of obstructionsinspection opening and fitted bend with a threaded cap or plug or access cover See bend inspection opening cover See cover inspection shaft IS shaft constructed in the line of a sanitary drain for the purpose of inspection and future access to locate and clear the drain

installation

PUBLIC COMMENTING DRAFT constructioninstaller temperature or network adjustment of pipework and fixtures in position for service and use adjustment of the offset between set temperature and the outlet temperature by the installer

Note 1 to entry: The purpose of this adjustment is to allow an installer, during commissioning, to increase the outlet temperature to compensate for temperature losses in the pipework between the outlet of the appliance

andinstantaneous sanitary fixtures. water heater See water heater

insulating coupling See coupling insulating flange See flange insulating joint See joint integral trap See trap integral unit solar water heater See solar water heater interconnection connection of two or more water systems

interface pressure pressure at the surface separating two components of a joint EXAMPLE Rubber ring, pipe socket.

interference fit joint See joint internal diameter . diameterinvert of waterway through a pipe, tube, tap, valve or other fitting

lowestinvert levelpoint of the internal surface of a pipe, channel or fitting at any cross-section level of the lowest point of the internal surface of a pipe or channel at any cross-section

irrigation distribution of water for such purposes as growth, leaching, cooling, treating, humidifying, frost protection and water replenishment of the soil for plants, turf, lawns, gardens, nurseries and agriculture

island sink See sink isolating tap See tap isolating valve See valve jack pump See pump jet (ejector) pump See pump PUBLIC COMMENTING DRAFT

joint result of joining two or more parts of a construction

autogenous welded joint welded joint in which two parts made of the same metal are welded together, with or without the use of

a filler rod of the same metal

ball joint joint in which the two parts that are joined are shaped so as to be in contact over part of the surface of

and at any desired angle, one to the other a sphere and arranged so that within certain limits the axis of each part can be set in any desired plane banded clamp sleeve joint band clamped over two spigot end pipes to form a watertight seal

belled end joint

welded joint expanded or formed end on a length of pipe in the shape of a bell to facilitate the making of a fillet Note 1 to entry: The bell shape allows for variations in angular alignment.

bolted gland joint

other material mechanical joint for pipes and fittings in which a gland ring is used to compress a rubber gasket or brazed joint joint in which the parts are united by a molten brazing alloy

bronze welded joint

jointNote 1in to which entry: the The parts alloy meltsto be atjoined a temperature are united below by a thefillet melting of molten point copper of the parts alloy being joined. capillary joint .

joint in which the parts are united by the flow of filler metal by capillary action along the annular space betweencaulked jointthe outside of a tube and the inside of a pipe socket or capillary fitting spigot and socket joint in which the jointing material is compacted by means of a caulking tool and hammer

cement mortar joint spigot and socket joint for pipes in which the jointing material used is cement mortar

compression joint

joint(a) madeCone, by fittings loose ringin which or olive the onto end ofthe the outside pipe is wall held of by the compression tube. with one of the following:

(b)crimp jointBy the deformation of the end of a tube against the body of a fitting. calibrated crimp tool or other suitable tool joint made using an internal insert fitting and an external crimp ring, which is compressed with a croxed joint

jointepoxy made resin by joint fittings in which the end of the pipe has a raised circular section to seal against the olive PUBLIC COMMENTING DRAFT

jointexpansion in which joint the parts are united using an epoxy resin adhesive contraction due to temperature change joint that permits longitudinal relative movement of the jointed parts caused by expansion and flange joint

joint made by the connection of two flanges by bolts or studs and nuts

flared joint pipe joint made by increasing the diameter of one pipe towards the end to enable insertion of the other pipe

flexible joint

joint permitting movement, expansion, contraction and rotation freedom to accommodate any anticipated ground movements (or movements of the supporting structure), which Note 1 to entry: Movement includes axial rotation of the jointed pipes or fittings with sufficient degrees of ground movements. result in the ability to telescope and/or articulate (or swivel) and/or axially rotate as a response to differential flexible mechanical joint

jointNote 1that to entry: permits The deflection seal or seals of may the bejointed housed pipes in either or fittings — and includes elastomeric joint seal(s) (a) an integrally manufactured socket — socket type; or

(b) a separately manufactured sleeve — sleeve type.

friction locked joint mechanical joint that incorporates an O-ring to provide sealing and a grab ring to prevent longitudinal movement of the pipe

fusion welded joint <1> butt, spigot and socket joint made on certain types of plastics piping (e.g., polyethylene) in which the surfaces that are to be in contact are fused . Note 1 to entry: Two methods may be used. Either the assembled joint may be heated and fused, or the components may be heated separately and while still hot brought together to become fused. <2> joint made between metals in a molten state without the application of pressure

gibault joint

devicehot poured used forjoint jointing pipes using rubber O-rings compressed to a sleeve by bolted slip flanges a molten compound into the joint pipe connection between spigot and socket of vitrified clay, concrete or cast-iron pipes made by pouring insulating joint

jointinterference or fitting fit designed joint to break the electrical continuity between adjacent pipes, fittings or fixtures

sliding spigot and socket joint between plastics pipes and fittings in which the external diameter of the spigot contacts the internal diameter of the slightly tapered socket within a specified distance, to the extentNote 1 tothat entry: some The longitudinal joint is made force with issolvent required cement. to make the joint mine subsidence joint

PUBLIC COMMENTING DRAFT may take place spigot and socket joint designed to permit axial movement in pipework where ground subsidence rolled grooved joint joint made using a coupling and a groove that is rolled formed in the pipe (not cut)

rubber ring joint spigot and socket joint incorporating a contoured rubber toroid that is compressed to effect a seal

silver-brazed joint joint in which the parts are united using a silver brazing alloy

soldered joint joint in which the metal parts are united with molten solder

solvent cemented joint spigot and socket joint made on certain types of plastics piping (e.g. UPVC) in which the contact surfaces are both coated with solvent cement and joined by pressing the softened surfaces together

spigot and socket joint joint for pipes in which the plain end (spigot) of one section is inserted into the enlarged end (socket)

formedswivel jointon the next section joint design that allows movement in a rotating plane and includes a positive stop

threaded joint joint between two concentric cylindrical or slightly tapered surfaces upon which have been formed matching screw threads

Note 1 to entry: The joint is made by engaging the thread and rotating one or both parts.

Note 2 to entry: Threads may be either —

(a) sealing threads where the joint is made pressure tight by the mating of the threads; or

(b) fastening threads where the sealing is effected by gaskets or O-rings.

welded joint joint between materials (usually metal or plastic), the faces of which are rendered either plastic or liquid, bonded together by heat or by pressure or both during formation .

joint deflection

achievable without loss of joint integrity for an appropriate service condition maximum angle (of deviation) between two adjoining pipes given by the manufacturer as being joint gasket

annularjoint ring gasket used between the two flanges of a flanged joint

ring of rubber or similar compressible material used as the jointing medium in a flexible joint or an expansionjointing product joint material used for creating a watertight joint between two mating surfaces

jointing adhesive compound applied between two surfaces for the purpose of adhering one surface to the other

jointing cleaner compound used to clean mating surfaces prior to their bonding or jointing

jointing compound PUBLIC COMMENTING DRAFT material for use in making a joint

jointing expansion ring

preformed ring made of an elastomeric material for use in making a fluid-tight joint designed to allow expansion-contractionjointing primer movement compound used to prepare mating surfaces prior to their bonding or jointing

jointing sealant

material or compound used to make a fluid-tight joint between two mating surfaces Note 1 to entry: The sealant may be of a permanently flexible or rigid-setting type

EXAMPLEjointing sealing Silicone, ring epoxy resin, putty, PTFE tape.

mating, normally circular, surfaces preformed ring made of an elastomeric material for use in making a fluid-tight joint between two jump-up section of a sanitary drain joining two sections of a horizontal drain at different levels inclined section of a sanitary drain joining two drains at different levels

jumper valve See valve

junction

sanitary45° junction fitting used to connect a branch pipe or channel to a main pipe or channel Y junction junction where the branch pipe enters the main pipe at an upstream angle of 45°

double Y junction . junction where two opposed discharges enter a main pipe at upstream angles of 45°

drop junction See jump-up entry at grade junction junction between a graded branch pipe and a stack

inspection junction

junctionsquare junction entering the main pipe at grade and fitted with an airtight removable cap

junctionsweep junction where the branch pipe enters the main pipe at 88° to 90° pipe centre line short length of pipe with a socketed branch at approximately 45° and with a socket set at 90° to the swept junction

long-radiusthroat radius bend junction entering a main pipe at 45° or a 45° junction fitted with a 45° bend short radius bend entering a main pipe at 45° with a throat radius of half the diameter of the branch pipe

PUBLIC COMMENTING DRAFT

junction opening sanitary junction that incorporates an inspection, test or access opening

key tool to enable a person to operate a valve, tap or locking device, or to lift a guard or cover

ferrule key tool for operating the valve of a screw-down ferrule

lifting key

toollocking for lifting key the cover of a surface box or inspection chamber tool for operating a locking device in a cover

valve key tool for operating a valve

kinetic air valve See valve

laboratory sink See sink lagged pipe See pipe latitude angle See solar water heater — terms . laundry trough See trough lead-free solder See solder level control valve See valve level invert taper See eccentric taper fitting lever handled tap See tap lining

protectivelinkages material applied to the internal surface of a pipe or fitting components forming part of the operating mechanism of the cistern

lifting key See key PUBLIC COMMENTING DRAFT loading unit

water usage rates weighted factor, applied to a fixture or appliance, used for the estimation of simultaneous

Notelocal 1 annealing to entry: The estimation takes into account the flow rate, length of time in use and frequency of use. Note 1 to entry: softening of a pipe over a limited length as a result of heating. This may occur during brazing or soldering of a joint

local authority See regulatory authority locking key See key locknut

lockinglockshield nut tapused on the threaded shank of a tap, valve or fitting to prevent it from rotating or loosening See tap long bend See bend long engagement socket See socket longscrew

section of tube threaded externally at each end to join two pieces of tube neither of which can be rotated threaded socket. Note 1 to entry: The thread at one end is sufficiently long to accommodate both a backnut and the full length of a long-term hydrostatic stress

continuouslyloose coupling applied nut hoop stress that is estimated will cause failure at a specified time and temperature .

nutloose retained flange to the fitting by means of a shoulder and capable of turning relative to the fitting See flange loose socket See socket low-flow bypass

auxiliary valve, operated hydraulically and installed in parallel with the main valve, used to provide stablelow level control vent under low flow condition See vent macerator pump See pump

main main pipeline of a system

gravity main PUBLIC COMMENTING DRAFT

mainreticulation through main which water, sewage or stormwater flows under the influence of gravity network of pipes to which service pipes of individual properties are connected

rising main main through which water or sewage is pumped at pressure

stormwater main conduits including stormwater pits for the conveyance of stormwater

Note 1 to entry: Control of the stormwater main is vested in the network utility operator.

trunk water main network utility operator’s water main for conveying water from one area to another area

Note 1 to entry: Control of the trunk main is vested in the network utility operator.

water main conduit or pipeline vested in the network utility operator and constructed to convey potable water supplied by that authority

Note 1 to entry: Control of the water main is vested in the network utility operator.

main tap See tap mains pressure water heater See water heater maintenance shaft shaft consisting of a chamber and riser with ends suitable for connection to a sewerage system and sealing of the riser

Note 1 to entry: A maintenance shaft — .

(a) permits maintenance of sewers by operators working from the surface using commonly used maintenance and inspection equipment;

(b) permits condition assessment of sewers; and

diameter of 300 mm. (c) does not permit persons to enter the sewer through the riser, which is limited to a maximum internal maintenance shaft chamber

shaft chamber comprising a chamber floor, walls and soffit Notemakeup 1 to entry:water The chamber floor may contain a formed, graded channel for the passage of sewage. <1> water added to a system of pipes or drains during a pressure test or operation to replace water losses due to leakage, absorption or operation <2> water added to a static storage tank in an evaporative cooler to replenish the regular draw-off in order to maintain the working volume

manifold pipe assembly comprising headers and branch pipes for interconnecting a number of appliances to combine their output PUBLIC COMMENTING DRAFT manual cistern See flushing cistern manual override valve

automatic mode auxiliary valve operated manually to open or close the main valve while the main valve is operating in

manufacturer’s recommended commissioning temperature temperature to which the tempering valve is set and checked following its installation within the limits

specifiedmanufacturer’s by the manufacturer recommended maximum supply temperature continuously without permanent damage maximum hot water supply temperature that the primary temperature control valve can accept manufacturer’s specification documented record of the product’s attributes by the manufacturer

Note 1 to entry: The documentation is issued by —

(a) the original manufacturer in the case of a new valve; or

(b) the manufacturer in the case of a remanufactured valve whose specifications supersede the original manufacturer’svalve’s specifications. specified temperature settings

maximum and minimum outlet temperatures to which the primary temperature control valve can be set,marked as specified water level by the manufacturer

staticmatched level performance of water in a cisternset when filled to its effective capacity are compatible Water Closet (WC) pan, matching cistern or flush valve combination and sewer dosing unit that . matched performance vacuum set vacuum water closet pan or single stall wall-hung vacuum urinal and matching vacuum interface or rinse valve combination that are compatible

maximum allowable gearbox input torque

maximum allowable input torque that can be applied to a gearbox so that the output torque does not exceedmaximum the minimumdifferential strength displacement test torque relative transverse displacement between the spigot and socket surfaces at one point

maximum functional test torque

pressure (AOP) maximum allowable torque to operate an ungeared gate valve at fully unbalanced allowable operating maximum head See head maximum working pressure

for its estimated useful life under the anticipated working conditions maximum pressure that can be sustained with a factor of safety, by the type and class of pipe or fitting mean diameter

PUBLIC COMMENTING DRAFT half the sum of two diameters at right angles to each other on one cross-section

mean outside diameter

section of the tube arithmetical mean of the maximum and minimum outside diameters measured at any one cross- mechanical mixing valve See valve

mechanical ventilation movement of air by mechanical means using fans and associated drive and control gear

meter

apparatusmeter assembly for measuring or recording the flow of water required to connect these components together and to the water supply pipework apparatus consisting of water meter, stop valve, strainer, additional valves (if fitted) and unions meter box

box or chamber for housing a water meter above or below ground level, capable of withstanding foot andmeter vehicle tap traffic loads See tap mine subsidence joint See joint minimum strength test torque

maximumminimum inputwall thicknesstorque that an ungeared sluice or gate valve is designed to withstand eᵧ min

minimummirror test permissible value of the wall thickness (eᵧ) at any point around the circumference of the pipe . See test misalignment condition in which two points, intended to be connected, will not mate due to being out of alignment with each other

mixing tap See tap mixing valve See valve mortar cement mortar consisting of cement, aggregates and water

moulded fittings

fittingmoulded manufactured thread entirely by injection moulding

thread formed during manufacture of a moulded pipe or fitting

PUBLIC COMMENTING DRAFT movable dwelling relocatable or registrable dwelling

near wall

supply outlet, is — wall or part of a fixture or receptacle which, measured horizontally from the inside edge of the water (a) in the case of a single near wall, within a distance equal to three times the diameter of the effective opening; or

(b) in the case of two intersecting walls, within a distance equal to four times the diameter of the effective opening from each wall.

neutralizer device for neutralizing acids or alkalis in wastewater prior to entering drains neutralizing chemical dispensed by a neutralizing apparatus

nipple

shortbarrel tube nipple having an external thread at each end of the length nipple having an external tapered thread at each end and an unthreaded section in the centre close taper nipple

nipplehexagon having nipple an external tapered thread at each end and meeting at the centre of the length situated between the two threaded ends for wrenching purposes short straight pipe fitting having an external tapered thread at each end with a raised hexagon centrally

nominal discharge capacity .

dischargenominal flow capacity rate of a pipe fitting or fixture

flow rate from the mean of flow rate averages delivered over a range of prescribed pressures Notenominal 1 to entry: pressure Flow rate is expressed in litres per minute. PN See pressure nominal size See diameter nominal nominal working pressure See pressure nominated maximum delivery temperature

maximumnon-drinking temperature water of heated water water other than drinking water

non-ferrous metal metal or metal alloy in which iron is not the major constituent

PUBLIC COMMENTING DRAFT non-potable water See non-drinking water non-return valve See valve non-rising spindle design valve design where the gate is attached to the spindle with a threaded nut so that the spindle does not rise as the gate moves from closed to open position

non-toxic substance which would not normally have detrimental health effects if consumed

notch sensitive susceptibility to fracture due to the presence of a surface discontinuity such as a notch, a crack or scratch, or a sudden change in section

obvert See soffit O-ring sealing ring circular in shape, generally of natural or synthetic rubber

offset

pipegraded and offset fittings used to provide continuity between pipes whose axes are parallel but not in line stack offset, which changes direction at an angle less than 45° from the horizontal

steep offset stack offset, which changes direction at an angle of 45° or more from the horizontal

on-site stormwater detention OSD

stormwater drainage network device for the temporary storage of stormwater, above or below ground, to reduce the peak flow to the off-take clamp

the clamp seal clamp with an integral off-take in flange, nipple or socket design which retains the integrity of open air

nearby object location outside the extremities of a building and where air circulation is unhindered by any other open outlet See outlet operating mechanism device (diaphragm or piston) that translates the change in operating pressure in the valve cover chamber to the motion of the seal disc

orifice plate See restrictor PUBLIC COMMENTING DRAFT outfall part of the disposal system receiving surface or sewage water from the drainage system

outlet

<1> opening or passage for water or waste exits <2> portion of the tap assembly after the shut-off device where water flows for its intended use

fixture outlet

openingfree water in a outlet fixture, appliance or vessel serving to discharge the contents unrestricted outlet where water can freely discharge

open outlet outlet that discharges water to atmosphere and is not intended to withstand a static water pressure

spray outlet

water passing through it to break up into a spray fitting incorporating a perforated plate attached to the outlet of a tap, mixing valve or pipe and causing waste outlet

outlet pipe (with or without overflow ports) with a top flange and grating outlet connection

connectionovality made at the outlet of an appliance, fixture or fitting one cross-section of the tube difference between the maximum outside diameter and the minimum outside diameter measured on

overflow .

<1> flow from an overfilled vessel, sanitary appliance, or chamber to take place <2> part of a sanitary drain vessel, sanitary appliance, or chamber through which overflow is intended

<3>standing level ofoverflow the rim of a fixture or the invert level of an overflow pipe

overflow pipe consisting of a vertical tube, standing in a vessel and passing through its base overflow device

deviceoverflow to safely level divert flow in the event of a blockage, for use with the drainage system of a box gutter over the top edge level at which liquid in a vessel will first start to overflow, either through the overflow pipe, if any, or overflow measure

outlet of an eaves gutter measure to divert water from flowing back into a building from a blockage anywhere along or at the overflow pipe See pipe PUBLIC COMMENTING DRAFT overflow relief gully See gully overland flow water running across the land after rainfall that cannot enter the stormwater drainage system due to

blockage or rainfall exceeding the design intensity of the drainage system

own re-processable material

material prepared from rejected unused pipes, fittings and valves, including trimmings from the production of pipes, fittings, or valves that will be reprocessed in a manufacturers plant after having been previously processed by the same manufacturer by a process such as moulding or extrusion and for which the complete formulation or material specification is known

P-trap See trap P-trap (universal) See trap pan bend See bend

pan connector

<1> short straight soil pipe with a socket at one end to receive the outlet spigot of a WC pan or soil fixture <2>matching plastics stub-pan or rubber connector fitting for connecting a WC pan or soil fixture to a soil pipe adaptor for use with one or more matched pans and connected directly to the integral spigot end of the pan so that it can be used in S-trap, P-trap or side outlet situation .

offset pan connector

pan connector with an offset angle greater than 30° to the vertical to allow WC pan fit adjustments pan extension

soil pipe fitting comprising a straight section, terminating in a socket to receive the outlet spigot of a P orpan S trapsocket WC pan or soil fixture See socket peak flow

maximumpedestal water rate of closet a fluctuating pan flow See water closet pan peeler appliance designed to abrade the surface of fruit or vegetables and to discharge the abrasions through a peel trap for the retention of larger particles

PUBLIC COMMENTING DRAFT perforated pipe See pipe performance test See test permanent ponding

ponding along the sole of eaves and box gutters when free water is evident for more than three days after the cessation of flow

pH measure of the acidity or alkalinity of a liquid

a value of 7. Note 1 to entry: The pH scale extends from 0 (very acid) to 14 (very alkaline) with neutral solution having photographic processor appliance that may be used to retain chemicals and water for the processing of photographs and similar

pillar hydrant See fire hydrant pillar tap See tap

pipe

singleaccess length pipe of tube, usually of circular cross-section, used for the conveyance of fluids pipe provided with an opening and a removable cover for inspection and maintenance

branch pipe

commoncharge pipe discharge pipe to which plumbing fixture traps at any one floor level are connected . smallcirculation diameter pipe pipe for maintaining the water seal in a floor waste gully pipe forming part of the primary or secondary circuit that allows water to circulate within a water supply system

co-extruded pipes pipe comprising two or more layers, where the layers are bonded simultaneously in a die head as part

ofjacketed the extrusion pipes process

co-extrudedEXAMPLE pipeAbrasion with anresistance, external UV layer protection. used for identification or other specialised purpose combined pipe

sewerage system pipe that receives the discharge from both soil and waste fixtures and conveys those discharges to the common discharge pipe

gradeddischarge pipe pipe to which more than one fixture discharge pipe is connected stack or a drain

PUBLIC COMMENTING DRAFT pipe for carrying sewage and wastewater from any fixture, appliance or floor waste gully to a feed pipe pipe conveying cold water to a water heating apparatus

fixture discharge pipe

to the gully discharge pipe from a single fixture trap or from a floor waste gully but not any of the pipes leading

flexible pipe

in below-ground drains non-pressure pipe with a relatively thin, flexible wall that requires special side support when installed flush pipe

pipegraded connecting pipe a cistern or flush valve to the inlet of a sanitary fixture or to the sparge pipes of a urinal pipe installed on a grade less than 45° from the horizontal

lagged pipe pipe surrounded with thermal insulation

multilayer pipe pipe comprising different stress-designed layers

overflow pipe

pipeparallel connected pipe to a vessel, sanitary appliance, drain, tank, or chamber to discharge excess liquid or appliance pipe system that generally uses a dedicated pipe to supply heated or cold water to each fixture perforated pipe pipe with perforations in the side to allow the absorption of ground water in subsoil drainage

pressure pipe .

pipeprimary designed circuit to withstandflow and return an internal pipe fluid pressure pipes that convey water from the source of heat to the storage vessel and from the storage vessel back to the source of heat

return pipe pipe in a primary heated water system in which water moves back to the boiler or a pipe in a secondary heated water system in which water moves back to the heated water storage vessel

rigid pipe

installed in below-ground drains non-pressure pipe with a relatively inflexible wall that does not require special side support when scour pipe pipe set in a hydraulic structure to permit scouring or emptying

secondary circuit flow and return pipe pipes that convey heated water from and return it to the storage vessel and from which heated water may be drawn off

sewer pipe non-pressure pipe for the conveyance of sewage

soil pipe PUBLIC COMMENTING DRAFT

pipe that conveys the discharges from one or more soil fixtures and may also carry discharges from wastesoil, waste fixtures and vent pipe SWV non-pressure pipe for the conveyance of soil or waste discharge or for the conveyance of gases from a drainage system

sparge pipe pipe having perforations through which water is sprayed for cleansing purposes

stainless steel/nano-antibiotic plastics composite pipe

nano-antibiotic grain and thermoplastic plastic) and a polished and welded outer pipe made of compositestainless-steel pipe band consisting of an inner plastic pipe made of nano-antibiotic plastics (mixed with standpipe rigidly supported vertical length of pipe emerging from the ground with a tap or valve, serving as an outdoor water supply point

stormwater pipe drainage pipe for carrying stormwater from collection points on a property to the stormwater system

suction pipe

lengthtail pipe of pipe fixed to and delivering water to the inlet of a pump part of a union coupling which is a short straight or bent copper or brass pipe with an integral collar at one end for engagement by the coupling nut and the other end being plain

vent pipe open-ended pipe, connected at any high point in a heated water system or from any vessel containing heated water, and arranged so that the open end discharges into the airspace of the cold-water feed tank or to the outside atmosphere

vented pipe discharge pipe with a vent connected at its upstream end

waste pipe .

pipewater that service conveys pipe the discharge from waste fixtures pipe of any water service

pipe boss See boss

pipe clip

fixingfixed pipearrangement clip designed to fit around a pipe or fitting and having provision for fixing to a support clip designed to prevent movement in all directions of the pipework that is being restrained

support pipe clip clip designed to support pipework suspended from a structure, but which is not intended to prevent movement of the pipework in nominated directions

PUBLIC COMMENTING DRAFT pipe hanger device for suspending piping from a structure

pipe interrupter

several holes or slits (air inlet apertures) pipe through which water flows and into which air can enter through an annular aperture or through pipe interrupter device See backflow prevention device

pipe socket See socket pipe support

devicepiping for supporting and securing piping to walls, ceilings, floors or structural members liquids or gases line of pipes, with or without valves or other fittings, connected together for the conveyance of piston pump See pump pitting resistance equivalent number PREN comparison of the pitting corrosion resistance of various types of stainless steel based on their chemical

compositionsNote 1 to entry: and The specifically following equation chromium is used (Cr), to calculatemolybdenum the PREN: (Mo) and nitrogen (N) PREN =%Cr +%33. Mo +× N%

where

× =

× = 30 for austenitic stainless steels 16 for duplex stainless steels . × = 0 for ferritic and martensite stainless steels

plain wall construction

pipeplant or room fitting of a homogeneous material with plain inside and outside surfaces allocated area containing essential mechanical and electrical equipment

plug

pipeSee also fitting plug for screw stopping up the socket end of a pipe or pipe fitting end plug

compressionfusible plug or capillary fitting for stopping up the end of a pipe safety device in the form of a plug of suitable low melting point material that closes the safety device

channelsealing plugand is intended to yield, at a predetermined temperature, to permit discharge of fluid PUBLIC COMMENTING DRAFT

devicewaste plugfitted into a pipe or fixture to prevent ingress of foreign matter or to provide a permanent seal

stopper for use in a waste fixture which enables water to be temporarily retained plug screw

plug, having an external thread, intended for sealing the cleaning eye of a sanitary fitting

plug tap See tap plug valve See valve plumbing system

fixtures,drinkable fittings, and non-drinkable pipes, materials, water or services appliances other than the sanitary drain, used for the collection and conveyance of any wastes or wastewaters from any premises and including all vents, flashing, and plunger pump See pump pneumatic ejector See pump polluted area See contaminated area pop-up waste See waste positive displacement pump See pump pot sink

See sink . potable water See drinking water precast chamber See chamber pre-heater solar water heater See solar water heater Press fit end connector

make a mechanical and leak tight joint fitting end incorporating an elastomeric sealing element to which a pressing tool and jaw are applied to press tool and jaw mechanical device which, by closing jaws, causes radial compression of the end on the connecting tube

pressure force per unit area applied at right angles to the surface of an object

Note 1 to entry: The symbol for pressure is P or p and the SI unit is a pascal (Pa), equal to one newton per square metre (N/m2). Other common units are pounds per square inch or bar (equal to 100 kilopascals).

PUBLIC COMMENTING DRAFT allowable operating pressure AOP

allowable internal site test pressure, pressure excluding surge, which a component can safely withstand in service ASTP

installed pipeline maximum internal hydrostatic pressure that can be applied on site to a component in a newly

back pressure difference between the pressure within any water service and a higher pressure within any vessel or pipework to which it is connected

closing pressure pressure at which a pressure-relief valve or a vacuum-relief valve reseats or closes after discharging

shock> pressure See water in pipework hammer under flow conditions dynamic pressure ratio

ratiointerface at the pressure hot and cold inlets of the higher to the lower dynamic pressures under flow conditions pressure at the surface separating two components of a joint, e.g., a rubber ring and the pipe socket

maximum allowable operating pressure MAOP

maximumnominal pressure internal pressure, including surge, that a component can safely withstand in service pressure nominal PN alphanumeric pressure class designation specifying the nominal operating pressure in bar at 20 °C which is related to the mechanical characteristics of the components of a piping system

reseating pressure . actual inlet pressure at which a pressure-relief valve or a vacuum-relief valve reseats or closes after discharging

set pressure pressure at which a valve is designed to operate

test pressure

pressureworking appliedpressure internally to pipes and fittings when being tested for strength and watertightness under the anticipated working conditions maximum internal pressure that can be sustained by a pipeline component for its estimated useful life,

pressure gauge

instrumentpressure head having a graduated scale for indicating fluid, air or gas pressure within a vessel or system See head pressure-limiting valve See valve

PUBLIC COMMENTING DRAFT pressure pipe See pipe pressure ratio valve See valve pressure-reducing valve See valve

pressure-relief valve See valve pressure-sustaining valve See valve pressure test See test pressure type vacuum breaker See mechanical backflow prevention device pressurized chamber See chamber primary circuit flow and return pipe See pipe primer

protective coating application first coat applied as a corrosion inhibitor, a sealer or compatible key for subsequent coats of finish in a probable simultaneous demand

domestic installations probable maximum flow rate for pipework supplying multiple dwellings, based on usage patterns in probable simultaneous flow rate .

probable maximum flow rate in branch pipework within an individual dwelling, based on loading units ascribedproperty to the fixtures or appliances connected to the particular branch pipe house, building, tenement, land, or premises

property alignment line between any thoroughfare, highway, street, road, lane, path, or any other form of carriageway and an allotment of land abutting it

property service

up to and including the meter assembly or to the stop tap if no meter is required pipes and fittings used or intended to be used for the supply of water to a property from the water main puddle flange See flange pulp disposal macerator appliance used to dispose pulp single-use containers (such as bedpans, urinals and bowls) containing human waste to sewer

Note 1 to entry: The pulp disposal macerator is not used in conjunction with a toilet pan or pump.

PUBLIC COMMENTING DRAFT pump

mechanical device generally driven by a prime mover and used for raising fluids from a lower to a higherairlift pumplevel or for circulating fluid in a pipework system device for raising a liquid from a lower level to a higher level by use of compressed air

bucket pump reciprocating pump being a lift pump incorporating a displacing member, called the bucket, in the form of a short cylinder incorporating a non-return valve

centrifugal pump

pumpcirculating in which pump motion is imparted to a fluid by the centrifugal force imparted by a rotating impeller

pumpdiaphragm used to pump ensure flow of heated or cold water in a loop system pump in which liquid is drawn into and discharged from a chamber through non-return valves by the

changedry well in pump the capacity of the chamber through the flexing of a diaphragm See freestanding pump force pump pump that forces water against an opposing pressure

freestanding pump pump installed in a dry situation free of sewage surrounding the pump

Note 1 to entry: A free-standing pump is not submersible.

hydraulic ram pump

automaticjack pump pumping device that utilizes the energy of flowing water bucket pump used for hydraulic pressure testing of pipework

jet pump ejector pump .

causes the liquid to be pumped pump in which a pressure deficit is created by a venturi or nozzle and the pressure differential then macerator pump positive displacement pump containing a macerating device

piston pump reciprocating pump incorporating a piston

plunger pump reciprocating pump incorporating a long cylindrical piston

pneumatic ejector pump

by the introduction of compressed air pump in which liquid flows by gravity into an ejector pot suitably fitted with valves and is then emptied positive displacement pump

pumpreciprocating that displaces pump a fixed amount of water with each stroke or rotation irrespective of the pressure by the displacing action of a moving member having a reciprocating movement pump in which liquid is alternately drawn into and expelled from a chamber through non-return valves

PUBLIC COMMENTING DRAFT Note 1 to entry: A reciprocating movement is a linear movement regularly reversing in direction.

Note 2 to entry: The moving member may be a bucket, a piston, a plunger or ram.

screw pump

rotates, thus lifting liquid from its submerged lower end extended version of the axial flow or propeller pump, comprising an inclined spiral screw in a pipe that

semi-rotary pump pump that is usually manually operated by the angular displacement of two radial-valved vanes working in a circular casing

sewage pump pump used for raising sewage from a lower to a higher level

small bore pumping unit pumping unit that includes a pump and receiving vessel used for the discharge of waste and wastewater

from dedicated fixtures to the sanitary plumbing and drainage system and/or bidets. Note 1 to entry: Dedicated fixtures may include WC pans, basins, showers, kitchen sinks, laundry troughs, baths Note 2 to entry: The small-bore pumping unit may include a macerator where discharging waste from a

soilspa fixture. pump mechanical device by which water is drawn from the spa bath and returned under pressure through

thesubmersible jet inlet fitting grinding pump pump that grinds the sewage into small particles prior to its passing through the impeller

Note 1 to entry: Submersible grinding pumps include grinder pumps, which are typically only low capacity pumps servicing dwellings; and mutrator pumps, which typically combine the cutter and impellor actions within the one unit and are operated by the same motor.

submersible pump .

pumpsullage designed pump to operate when submerged in fluid small centrifugal pump used for raising sullage from a lower to a higher level

vacuum pump

pump that extracts air from a pipe system so as to maintain it at below atmospheric pressure thereby inducingwater pump the flow of a liquid pump used for raising water from a lower to a higher level or for pressurizing a water supply system

push-on end connectors

and leaktight connection when pushed onto a tube fitting end which incorporates an elastomeric sealing element and a grab ring which makes a mechanical

quality control test See test PUBLIC COMMENTING DRAFT

rainhead

collector of rainwater, generally of rectangular shape at the end of a box gutter and external to a building,Note 1 to entry: connected A rainhead to an hasexternal a similar downpipe function to a sump.

rate of setting time taken for a material to harden to a prescribed degree or condition

rated system See solar water heater — terms raw sewage See sewage readily accessible

accessiblereciprocating without pump hazard, undue difficulty, or use of a tool See pump reconditioned component component rendered suitable for normal service by acceptable reconditioning techniques

recycled PVC-U, PE recyclate

dependent on designation and made or reprocessed into new products PVC-U and PE that can be reclaimed from salvaged materials, cleaned and graded into specific types Note 1 to entry: Rework generated from the manufacturer’s own production is not deemed to be recyclate.

reduced-pressure water heater See water heater

reduced-pressure zone device . See backflow prevention device reducer

pipe fitting for connecting pipes of different sizes together Notereducing 1 to entry: bend A reducer is sometimes referred to as a taper or reducing fitting. See bend reducing bush

fittingreducing with fitting internal and external threads used for connecting two different sizes of pipe See reducer reducing piece

smaller pipe tapered length of spigot and socket pipe in which the spigot fits the larger pipe and the socket the Note 1 to entry: The reducing piece may be concentric or offset.

reducing socket See socket PUBLIC COMMENTING DRAFT reflux valve See valve relief valve See valve relief vent See vent

relocatable home relocatable dwelling See movable dwelling renovation work incorporating all or part of the original fabric of the pipeline leading to improvement of current pipeline performance

repair clamp elastomeric-lined metal sheet with an integral clamping system designed for repairing pipes and for providing a full circumferential seal

replacement components new components sourced from the original equipment manufacturer or replacement manufacturer

Notereseating 1 to entry: pressure Components should be produced in accordance with the manufacturer’s specification. See pressure reseating temperature

temperaturerestrictor at the inlet of a valve that first allows it to close

apparatusNote 1 to entry:that is Itinstalled does not in includea pipeline pressure-reducing to regulate the valves.flow It may be designed for water or drainage applications. . reticulation main See main return bend See bend return pipe See pipe reverse action float valve See valve ribbed profile construction pipe or fitting with a plain inside surface and with a solid or hollow outside helical or annular ribbed or corrugated external surface

right angle tap See tap rigid pipe See pipe

PUBLIC COMMENTING DRAFT

residential building building containing one or more sole occupancy units

sole occupancy unit room or other part of a building for occupation by one or joint owner, lessee, tenant, or other occupier to

theNote exclusion 1 to entry: of A any sole other occupancy owner, unit lessee, may include tenant, — or other occupier

(a) a dwelling;

(b) a room or suite of rooms in a Class 3 building which includes sleeping facilities;

(d) a room or suite of rooms in a Class 9c building which includes sleeping facilities and any area for the exclusive use of a resident. resilient seat seal mechanism between the body and the dome, provided by an elastomeric material, which may be on either of the mating surfaces or provided as a separate elastomeric gasket

retrofit market retrofit retail market market segment requiring tap ware subassemblies, components and/or replacement parts to be

installedriser in the field with other manufacturers’ compatible products

vertical extension of the inlet leg of a trap to floor or ground level. A straight length of pipe fittedNote 1 toto aentry: trap Risersto extend may it. be It plain may double allow inletconnections or single inlet.of pipes

Note entry: A rverticaliser usually section extends of pipe to floor for levelconveying and is fitted water with from a grate, a lower so as to to a servehigher as level a floor waste outlet. . See also dropper riser cap riser plug

provide access into the riser for routine operations and maintenance cap or plug attached to the top of the riser to prevent infiltration of ground or surface water and to

Noterising 1 tomain entry: Caps or plugs may be either a locking type or a type that will permit flow relief. See main

rodding system of rods which are progressively joined to clear sewerage and stormwater drains

rodding point removable ground level cap providing access for cleaning and inspecting the sewage (foul) water drainage system

PUBLIC COMMENTING DRAFT roof drain above-ground gutter or conduit for the collection and conveyance of stormwater from the roof to the rainhead or point of entry to a downpipe

root penetration

intrusionrubber ring of plant roots into a drain or sewer that can lead to blockage or to the inflow of ground water sealing medium used in pipe joints

rubber ring joint See joint run-off surface discharge of water derived from precipitation on a surface

S-trap See trap S-trap (universal) See trap safe tray

spillage or leakage, and provided with a waste pipe to direct any discharge to a safe location watertight tray fitted under a water heater, feed tank or sanitary appliance to intercept condensation, safe waste See waste safety shower See shower safety valve See valve sag pit inlet pit located in a depression where stormwater ponds over the inlet due to restricted entry

salinity . concentration of chemical salts dissolved in water

Notesample 1 to entry: Salinity is usually expressed in milligrams per litre (mg/L) or parts per million (ppm). units of product drawn from a batch or lot and selected at random without regard to quality

Note 1 to entry: The number of units of product in the sample is the sample size.

sampling plan

specificsandwich plan construction indicating the number of units of components or assemblies to be inspected solid PVC, PE or PP, connected by a foam or solid intermediate layer of the same material, and the same piperesin or type fitting (PE withor PP) smooth is used inside for all and layers outside surfaces in which the inner and outer wall layers are of sanitation

and infection on health action of washing and/or excretion carried out in a manner or condition to minimize the effect of dirt

sanitary appliance PUBLIC COMMENTING DRAFT

applianceEXAMPLE intendedMachines to be for used washing for sanitation dishes and otherclothes. than a sanitary fixture sanitary fixture

fixture intended to be used for sanitation

sanitary drainage system

assembly of pipes, fittings and apparatus used to collect and convey the discharge from the sanitary plumbingNote 1 to entry: system, The together system is with usually discharges located below from ground fixtures level. directly connected to the drain, to the sewer sanitary napkin disposal unit electrically operated mechanical appliance for reducing sanitary napkins to fragments small enough to

besanitary flushed plumbing into the drainage system system drainage system assembly of pipes, fittings, fixtures and appliances used to collect and convey sewage to the sanitary scabble cleaning and provision of a roughened surface for effective jointing with another material

scale <1> coating of mineral matter, which may be deposited from hard water onto the inside surfaces of boilers, water pipes, vessels and apparatus

<2>scaling oxide factor formed on metallic surfaces during heating at elevated temperatures ratio of the end-use surface area-to-volume to the test surface area-to-volume

scour pipe

See pipe . scour valve See valve scouring

cuttingscreen action caused by the flow of liquids at high velocity device made from wire mesh or spaced bars used to separate solid matter from a liquid

screw pump See pump screwdown hydrant See fire hydrant screwdown pattern tap See tap screwdown valve See valve screwed boss See boss PUBLIC COMMENTING DRAFT scum

floatingseal coat mass of sewage or sullage solids buoyed up by entrained gas, grease or other substances coating applied to a cement mortar lining to control the interactions between the lining and the contents

ofsealing the pipe device or fitting device that mechanically, by way of a diaphragm or valve mechanism, creates a watertight seal

sealing plug See plug sealing ring See jointing sealing ring secondary circuit flow and return pipe See pipe sedimentation tank See tank selective surface See solar water heater — terms self-cleansing velocity

in suspension velocity of a flowing liquid in a pipe or channel, necessary to prevent the deposition of solids self-closing tap See tap self-sealing device sanitary device incorporating an elastomeric diaphragm that allows wastewater to discharge from a

fixturesemi-rotary in one pump direction but seals to prohibit the entry of gases in the opposite direction

See pump . sensor tap tap operated by a mechanism without physical contact

septic sewage See sewage septic tank See tank service valve See valve set pressure nominal pressure at which a valve is designated to operate

Note example: pressure cold water at expansion which a valves.pressure-relief valve or a vacuum-relief valve is set to

first pressure which a pressure-reducing valve is set to maintain

PUBLIC COMMENTING DRAFT set temperature

nominalsewage temperature at which a temperature-relief valve is set to first open in service wastewater from the community, including all faecal matter, urine, household and commercial wastewater containing human waste

fresh sewage

sewageraw sewage of recent origin still containing dissolved oxygen untreated sewage

septic sewage sewage in which anaerobic decomposition is taking place

Note 1 to entry: The septic state is characterized by a black or almost black colour and is normally accompanied by a smell of hydrogen sulphide.

stale sewage sewage that has almost or has already reached an anaerobic state

sewage ejector See pneumatic ejector pump sewage pump See pump sewer conduit for the carriage of sewage that is vested in the local sewerage authority

sewer pipe See pipe . sewerage system system that includes all sewer and sewerage works vested in the local authority

sharp edge

clearly defined edge, corner or point that has the potential to cause personal injury to the handler (e.g. onshort a pipe bend end, fitting or component) See bend short engagement socket See socket

shower

<1><2> sanitaryshowerhead fixture through for human which body water ablutionary is intended purposes to pass forming a spray for bathing purposes

tap top assemblies, or other components. Note 1 to entry: A showerhead may include a fixed or pivot arm, flexible hose (with or without a flow controller), drench shower PUBLIC COMMENTING DRAFT safety shower shower with a large output showerhead arranged to automatically give the user a rapid drenching in an emergency

shower base

floor tray, usually of concrete or plastics, for use as the base of a shower compartment with a waste outlet

shower bath See bath shower enclosure shower recess compartment for ablutionary purposes, consisting of prefabricated walls, base and a waste outlet

showerhead shower rose

fittingshower from module which water issues as a film or spray used for ablutionary purposes compartment for ablutionary purposes, consisting of an integral wall and base or a complete moulded

orside fabricated entrance cubicle chamber with suitable openings and fittings See chamber side-fed water heater See water heater side overflow device

overflowsilencing device device associated with an internal box gutter alongside a parapet wall and sump the incoming water below the surface of the water already in a vessel

device attached to the outlet of a float control valve to reduce the noise of incoming water by directing . silt arrester See arrester silver-brazed joint See joint silver brazing alloy brazing alloy containing silver as one of the major constituents

single air valve See valve single bowl sink See sink single stack modified system system of sanitary plumbing (differing from a single stack system) in which additional venting is provided by relief vents, which are connected at intervals with the stack by cross-vents

single stack system system of sanitary plumbing in which the stack and discharge pipes also serve as vent pipes

single wall heat exchanger See heat exchanger PUBLIC COMMENTING DRAFT

sink

receiving domestic, culinary, laboratory or industrial wastewaters fixture containing one or more bowls to temporarily retain water for cleaning purposes and for Note 1 to entry: Each bowl has provision for a waste connection.

bar sink

sinkbuilt-in designed sink specifically for use in bars and similar situations

sink,cleaner’s abutting sink a wall or walls, with a fascia, a tiling flange, or an upstand

sinkNote that1 to isentry: fixed It at is orusually near floorprovided level with to facilitate a protective the stripfilling on and the emptyingtop front edge of cleaning to prevent buckets damage by the buckets and with a grate on which to rest the buckets.

double bowl sink sink consisting of two bowls

Note 1 to entry: Each bowl may incorporate a sink drainer.

flushing sink

drainage system sink with integral flushing rim connected to a flushing device to enable carriage of waste to the sanitary hospital sink

sinkinset specifically sink adapted for hospital applications sink designed with a sealing rim for installation in a bench top

island sink sink not abutting or near a wall .

laboratory sink sink constructed of acid-resisting material and adapted for laboratory applications

pot sink large sink designed for use in commercial kitchens for the washing of cooking equipment or containers

single bowl sink sink consisting of a single bowl

Note 1 to entry: The bowl may incorporate a sink drainer.

triple bowl sink sink consisting of three bowls

Note 1 to entry: Each bowl may incorporate a sink drainer.

sink drainer area adjacent to the bowl for draining purposes

siphon pipe system, typically in the shape of an inverted U with unequal legs for conveying liquid over the edge PUBLIC COMMENTING DRAFT of a vessel and delivering it at a lower level by utilizing atmospheric pressure

siphonage action of a siphon

siphonic water closet pan See water closet pan

site stormwater drain drainage system for a site or property conveying roof water, stormwater drainage from other surfaces, and subsoil water to a connection point into the nominated point of connection or discharge

size range range of outside diameters of pipe for which the clamp is designed

slab urinal See urinal sleeve <1> conduit built into the structure of a building to allow another pipe to pass through, giving protection and allowing for relative movement <2> form of a double socket for joining two pipes

from corrosion <3> flexible membrane used to protect the external surface of a pipe (usually of ferrous material) sliding support

deviceslip fitting for supporting a pipeline in such a way that thermal expansion is permitted See fitting slop hopper . fixture, other than a water closet pan or urinal, used for the discharge of soil wastes and provided with asludge flushing apparatus, tap and grating semi-liquid solids settled from sewage in septic tanks, sedimentation tanks and grease arrestors

sludge valve See valve sluice valve See valve smoke test See test soakaway See absorption pit

socket

<1> end of a pipe or pipe fitting with an enlarged internal diameter for receiving the plain or spigot end of<2> another internally pipe threaded or pipe fitting coupling used in joining tubes

PUBLIC COMMENTING DRAFT double socket

fittinglong engagement with a socket socket at each end for jointing the spigot ends of two pipes in the same alignment

capillaryloose socket fitting socket of a length suitable for making a soft soldered joint spigot ends of two pipes in the same alignment cast iron soil, waste, vent or rainwater pipe fitting, twice the length of a normal socket, for jointing the

pan socket socket on a soil or drainpipe for receiving the spigot of a WC pan

pipe socket

bell-shapedreducing socket end of a pipe, which enables the fitment of a spigot different diameter fitting with a socket on either end of different diameters, enabling the connection of two pipes of short engagement socket

capillarytapered socketfitting socket of a length suitable for making a silver-brazed joint spigot or socket in which the diameter is tapered slightly along its length to facilitate jointing

socket bursting test See test soffit obvert highest point of the internal surface of a pipe or culvert at any cross-section

soft solder See solder

soil connector .

fittingsoil fixture which conveys soil liquid from a fixture to discharge pipework See fixture soil pipe See pipe soil stack See stack soil, waste and vent pipe See pipe soil waste dump point discharge point for the reception of sewage

solar altitude See solar water heater — terms solar noon See solar water heater — terms

PUBLIC COMMENTING DRAFT solar water heater — terms absorber

deviceagainst-pitch within ainstallation collector for absorbing and transferring radiant energy as heat into a fluid installation in which the inclination of the collector is opposite to the pitch of the roof

cross-pitch installation installation in which the inclination of the collector is at an angle to the pitch of the roof

circulating system

system in which heat transfer fluid circulates between the collector and a storage vessel or heat exchangercollector aperture during operating periods by means of a pump or fan or by natural convection

maximumcollector panel projected area through which unconcentrated solar radiation enters a collector passing through it device designed to absorb solar radiation and to transfer the thermal energy so gained to a fluid Noteo 1 t entry: They may be installed as either single or multiple units, supplying heated water to a common container.

forced circulation system

systeminsolation that utilizes a pump or a fan to circulate the heat transfer fluid through the collector

exposurelatitude to the rays of the sun angular distance of a meridian measured either north or south from the equator

orientation direction a collector or a building faces

Noterated 1 systemto entry: Expressed as the azimuth angle of the horizontal projection of the surface normal. . system comprising collector(s) and container

Note 1 to entry: The rated system will have been evaluated for performance in accordance with AS 2813, AS

2984,selective AS 4234 surface or AS 4445.1.

spectrally dependent surface of which the optical properties of reflectance, absorption, transmittance and emissivity are solar altitude angle between the line joining the centre of the solar disc to the point of observation and the horizontal plane through the point of observation

solar noon local time of day when the sun crosses the observer’s meridian

supplementary heating source heating appliances or devices added to a solar water heater to supply controlled thermal energy for

heated water days of insufficient irradiation, inclement weather and either peak usage or excessive demand for EXAMPLE Gas burner or electric element. PUBLIC COMMENTING DRAFT

supplementary primary heater circuit pipes that convey water from the supplementary heat source to the container and from the container to the supplementary heat source

Note 1 to entry: Water cannot be drawn off from the primary heater circuit.

thermosiphon circulation of a liquid established through differences in density between the warmer and cooler portions of liquid

thermosiphon head head due to the difference in density between warmer and cooler portions of the liquid

tilt

angleunrated between system the horizontal plane and the plane of the specified surface for performance system comprising new or existing collector(s) and container which has not been evaluated

Notewith-pitch 1 to entry: installation An unrated system includes the case of adding a collector or container to an existing system. installation in which the inclination of the collector coincides with the pitch of the roof

solar water heater appliance to heat water by the use of solar energy

close-coupled system system in which the storage vessel is mounted close to the collector and on a common support frame

closed system, sealed or unvented system .

systemdirect system in which the heat transfer fluid is completely sealed from the atmosphere solar heating system in which the heated water that will ultimately be consumed or circulated to the heat user passes through the collector

indirect system

circulated to the heat user, passes through the collector solar heating system in which a heat transfer fluid, other than the water ultimately consumed or integral solar water heater solar water heating system in which the container and collector are constructed as a single unit

open system

systemremote in storage which thesystem heat transfer fluid is in extensive contact with the atmosphere system in which the storage vessel is separate from the collector and is located some distance from it

thermosiphon system

system that utilizes only density changes of the heat transfer fluid to achieve circulation between collectorunvented and system storage or between collector and heat exchanger

PUBLIC COMMENTING DRAFT system in which no provision is made for a vent permanently open to the atmosphere

vented system

system in which contact between the heat transfer fluid and the atmosphere is restricted, either to the free surface of a feed and expansion cistern or to an open vent pipe only solder alloy used in a molten state for joining certain metals together

low-lead solder solder containing less than 0.1 % lead

soft solder alloy (usually based on tin) used for the low-temperature joining of metal components

soldered joint See joint soldering

into the space between the closely adjacent surfaces of the parts to be joined joining of metals in which a molten filler metal (solder) is drawn by capillary action see brazing

Notesolenoid 1 to entry: valve The melting point of the filler metal is usually below 500 °C. See valve solvent cement

solvent-basedNote 1 to entry: fluid, Only designedcertain plastics for bonding can be joinedplastics, by pipessolvent and cements fittings and the composition of the cement used has to be appropriate to the particular plastics material to be bonded.

solvent cemented joint See joint . spa bath See bath spa pump See pump sparge pipe See pipe spear head device for dewatering water-charged ground

special tool

temperature control mechanism or method specifically designed to prevent the unauthorized adjustment of the Note 1 to entry: Screwdrivers, cross head screwdrivers and conventional spanners are not considered special tools.

spigot plain or specially formed end of a pipe for insertion in a socket or coupling to form a joint

spigot and socket joint See joint PUBLIC COMMENTING DRAFT

spill level

maximum height to which water will rise above overflow pipe when it is entering cistern at a constant flow pressure

or openings having a free discharge to the atmosphere under all conditions maximum height to which water will rise while overflowing the rim level or through channels

Note 1 to entry: Spill level is determined when water is flowing into the fixture. or receptacle at the maximum rate, under a specified water pressure with all service outlets closed.

maximum height to which the water will rise in the cistern while overflowing through the overflow when water is entering the cistern through the inlet valve at a dynamic pressure (which is equal to the manufacturer’s specified maximum operating pressure) and with the inlet valve fully open and the flush valve closed Note 2 to entry: The dynamic pressure is equal to the manufacturer’s specified maximum operating pressure. spindle seal retainer component that is in direct contact with the spindle seals to ensure they are retained

split collar See collar spray outlet See outlet spray tap See tap

. spraying apparatus apparatus designed to be directly or indirectly connected to the water supply system to spray fertilizers, insecticides, detergents or similar contaminable liquids to the atmosphere

EXAMPLE Kitchen exhaust degreasers. various devices. Note 1 to entry: Spraying apparatus may alternatively be designed to clean or clear drains or to flush hose-connected spraying apparatus

sprayingNote 1 to entry: apparatus This does intended not include for temporary steam generators. attachment to a flexible hose

spreader

fitting attached to the end of a urinal flush pipe with a slotted or perforated outlet a lower level device fitted to the foot of a downpipe to evenly distribute rainwater onto a roof at

PUBLIC COMMENTING DRAFT spring bend See bend spring hydrant See fire hydrant square junction See junction

stack

verticalcombined pipe, stack including offsets, that extends through more than one floor level

stackdischarge that carries stack discharges from both soil and waste fixtures main vertical discharge pipe, having one or more branch discharge pipe connections, that is vented to the atmosphere at one end via a discharge stack vent

soil stack

stackNote 1 that to entry: carries The the stack discharges may also carryfrom wasteone or discharges. more soil fixtures stack height

number of floor levels through which the stack passes, counted from the base of the stack up to, but not including, the floor level on which the highest fixture is connected Note 1 to entry: Where the distance between the base of the stack and the lowest floor exceeds 2.4 m, this interval shouldwaste bestack counted as an additional floor level.

stack that only carries discharges from waste fixtures stack vent See vent . stale sewage See sewage standard dimension ratio SDR nominal ratio of the pipe outside diameter to its wall thickness

standing overflow See overflow standing waste See waste standpipe See pipe static head See head steady mixed water discharge temperature

steep offset

PUBLIC COMMENTING DRAFT single temperature reading taken at 30 s ± 5 s following an applied change in the water supply conditions See offset step-iron step, either straight for building into corners or horseshoe-shaped for building into walls or access chambers, that forms an access ladder when used with others in a series

sterilizer

fixtureNote 1 to to entry: sterilize This instruments includes autoclaves. or clothing

stop tap See tap stop valve See valve storage tank See tank storage water heater See water heater stormwater

naturally occurring water from rainfall on or around the site or water flowing onto the site stormwater channel

trade waste, which does not convey any sewage artificial channel for the carriage of stormwater, roof water, surface water, subsoil water or permitted stormwater drain conduit of a stormwater drainage installation normally laid underground for the conveyance of stormwater from a property to the stormwater system

subsoil drain buried perforated or permeable conduit for collection and conveyance of water of subsoil and ground

origin or for in-ground dispersal of stormwater from a downpipe or surface water drain .

stormwater drainage system roof drainage system, surface water drainage system and subsoil drainage system on a property for the collection and conveyance of stormwater

stormwater installation roof gutters, downpipes, surface channels, kerbs and gutters, subsoil water drains and stormwater drains on a property for the conveyance of stormwater from that property

Noteo 1 t entry: The installation includes inlet pits, stormwater pits, apparatus and appliances connected thereto but does not include any part of the authority stormwater system.

stormwater main See main stormwater pipe See pipe stormwater pit chamber constructed within a stormwater drain or stormwater main to provide access for inspecting, testing or clearance of obstructions

PUBLIC COMMENTING DRAFT stormwater system stormwater mains and drainage works vested in the regulatory authority

strainer device for separating solid matter (above a nominated size) from liquid to prevent such matter from entering a pump, valve, meter or pipework

stress relieving heat treatment carried out to remove stresses produced by manufacturing or forming operations

structural liner

groundwater or soil loads in the absence of support from the host pipe liner that has sufficient pipe ring stiffness so as to be self-supporting and able to resist buckling due to stuffing box See gland submersible grinding pump See pump submersible pump See pump subsoil drain See stormwater drain subsoil water See stormwater suction pipe See pipe sullage

domesticsullage dump wastes point including floor wastes from baths, basins, showers, laundries, and kitchens, connection point provided in the drainage line to receive waste discharges

sullage pump . See pump sullage tank See tank sump

unwanted water to facilitate its removal <1> pit, formed in the floor of a structure or sunk below the general base of an excavation, to collect a downpipe within the building perimeter that is used to increase the head of water at the entry to the <2>downpipe collector and of thus rainwater, increase generally the capacity of rectangular of the downpipe shape, in the sold of a box gutter and connected to

supplementary fixture overflow

overflow for installation to an existing fixture rather than incorporated as an integral component ofsupplementary a fixture heating source See solar water heater — terms supplementary primary heating circuit

PUBLIC COMMENTING DRAFT See solar water heater — terms supplementary water heater See water heater support pipe clip See pipe clip

surcharge

overflow from a sewer or combined sewer caused by overloading or chokage Notesurcharge 1 to entry: pit Surcharge usually refers to wet weather infiltration or inflow.

stormwater drainage system pit where the water level is allowed to rise above the grate of the pit causing water to overflow from the surface box

metal frame with a lid fixed in the ground with the lid level with the surface to give access to an undergroundsurface water fitting naturally occurring water, other than sub-surface water, which results from rainfall on or around the

sitesurface or water water flowing drain onto the site underground non-perforated conduit for collection and conveyance of stormwater of surface origin

surgeon’s tap See tap swarf small chips removed from a material during cutting, drilling or machining operations

sweep junction

See junction . swept junction See junction swivel fitting See fitting SWV (soil, waste and vent) pipe See pipe tail pipe See pipe

tank

fixedautomatic container flush for tank storing liquids

flushingbreak pressure tank arranged tank to discharge its contents at regular intervals storage tank incorporating an air gap to reduce the pressure in gravity pipelines

break tank PUBLIC COMMENTING DRAFT

storagecontainer cistern or tank incorporating an air gap used for backflow prevention

fixedflushing receptacle tank for storing liquids

tank from which water from a fixture is discharged to flush a system of drains

sedimentation tank tank through which water or wastewater is passed so that suspended matter may settle to the bottom and be removed

septic tank

settleable suspended matter to settle and be retained so that organic matter contained therein can be onedecomposed storey chamber(s) (digested) throughby an anaerobic which sewage bacterial or actionsullage in or liquid both are allowed to flow slowly to permit storage tank container for storing water

sullage tank

tankwater used storage to pre-treat tank sullage prior to discharge to a common effluent drainage system container for storing water

tap <1> valve with an outlet used as a draw-off or delivery point <2> tool for cutting an internal screw thread

bib tap screw-down pattern or ceramic disc draw-off tap with horizontal inlet and free water outlet

bidette tap . tap that discharges over the rim of a bidette and provides an air gap

combined tap

water taps coupled together with a common outlet nozzle (either fixed or swivelling) to discharge heated,drain tap cold or mixed water

tapdraw-off fitted tapto drain off the contents of a water system, pipe or vessel tap for the purpose of drawing off water

elbow action tap tap with a lever handle that can be operated by the elbow

electronic tap tap activated by a sensor beam and solenoid valve

Note 1 to entry: The temperature of the water is normally preset.

ferrule tap

water main to a water service

PUBLIC COMMENTING DRAFT tap with vertical inlet externally threaded and horizontal outlet suitable for controlling flow from a

Notefoot action1 to entry: tap It usually incorporates a loose jumper valve, permitting flow in one direction only.

tapfootpath that can tap be operated at floor level by a foot tap or ball valve, located between the water service and the supply pipe to the premises, to shutoff water to the premises

hose tap

tapin-line with tap an external screw thread on the outlet for the attachment of the coupling of a flexible hose tap with the centre line of both the inlet and the outlet in-line

isolating tap

and which is shut only for maintenance or failure of the downstream installation in-line tap for insertion into the pipeline to deliver water to a tap, valve, fixture, or combination thereof, lever handled tap tap that is operated by a lever

lockshield tap vandal proof tap tap with a spindle so shrouded that it can only be operated by a special removable key

main tap tap installed in the main water supply line

meter tap See footpath tap mixing tap

delivered through a single common outlet tap into which heated and cold water entering through separate ports are mixed in a chamber and then .

Notepillar 1 totap entry: The temperature of the mixed water is controlled by the operation of a control handle or handles. screwdown pattern draw-off tap with vertical inlet and free water outlet

plug tap tap, incorporating a plug, that can be turned to move its ports relative to the body inlet and outlet and

soNote control 1 to entry: flow It may provide a straight-through, full-bore waterway. right angle tap tap in which the centrelines of the inlet and outlet are at right angles

screwdown pattern tap

tap in which the valve disc or washer is screwed down against the flow to seat on a face at right angles toself-closing the axis of tap the threaded spindle tap that is opened by pressure on, or by twisting the top of, the operating spindle, and that is closed when the pressure is released under the action of a spring or water pressure

sensor taps tap operated without physical contact

PUBLIC COMMENTING DRAFT spray tap

tapstop that tap delivers a restricted rate of flow in the form of a spray screwdown pattern tap with horizontal or right-angled inlet and outlet connections

Note 1 to entry: It usually incorporates a loose jumper valve, permitting flow in one direction only.

surgeon’s tap

than by the hand tap or combination tap assembly fitted over a surgeon’s hand wash area, which is operated otherwise tap body part of a tap or tap assembly that includes the inlet and outlet connections

tap head part of a tap assembly that is removable and retains the shut-off device

tapset breaching piece assembly two or more stop tap bodies in an assembly

thermostatic mixing tap

delivered through a single common outlet tap into which heated and cold water entering through separate ports are mixed in a chamber and then

Note 1 to entry: The temperature of the mixed water is automatically controlled at a user-adjustable temperature thatNote is 2 suitableto entry: for A directproduct contact with withmultiple the skinoutlets and selected which gives by an the integral user the diverter ability tovalve shut-off is considered the outlet to flow. have a single outlet.

Notetimed 3 toflow entry: tap The product may also deliver cold water without mixing. tap that is automatically turned off after a predetermined delivery time or volume or both

union stoptap . stoptap with provision for connection to a pipe by means of a coupling nut

vandal proof tap See lockshield

taper fitting See reducer tapered socket See socket tapping band band clamped around a pipe to enable a mechanical connection to be made to the pipe

tapping saddle See tapping band tee fitting See fitting telescopic trap inlet PUBLIC COMMENTING DRAFT waste fitting that incorporates a telescopic inlet tube intended to facilitate installation in situations wheretemperature there is relief a need valve for increased or decreased length of fitting See valve temperature-pressure-relief valve See valve tempering valve See valve

temporary water service service enabling the supply of water from a water main or aqueduct to one or more premises not fronted by a water main or aqueduct

test

procedureabsorption to test determine if the article complies with specified requirements for acceptability test carried out to determine the suitability of soils for absorption trenches or for septic or sullage disposal systems

air test test of the constructed performance quality of pipelines or vessels, whereby loss of pressurized air is observed either directly, by means of a soap solution or the like applied to the pipeline section under test, or indirectly as in the case of assembled lines of permeable pipes, by comparing the measured rate of loss of air pressure against predetermined acceptable limits

bulkhead test

of the valve test where the testing machine provides external restraint to make a watertight joint at each end contamination of water test test carried out to determine the effect a material will have on drinkable water

dye test .

testfree for end tracing test the flow in a pipeline or for locating leaks by introducing colouring matter

testhydrostatic where the test valve ends are blanked off so that the axial hydraulic force is not externally restrained

testmirror carried test out on pipes and fittings by the internal application of water under a specific head

testperformance for inspecting test the interior of a pipeline by means of light reflected by a mirror

testrequirements of a product carried out under specified operating conditions for a specific period or a certain number of operating cycles to determine whether the product fulfils specified performance pressure test

testNote in 1 whichto entry: a pipe This or test fitting is often is pressurized undertaken to during determine manufacture the watertightness to determine of burst a completed strength pipelinefor quality control purposes.

quality control test test carried out during or after manufacture to prove the quality of a production run

PUBLIC COMMENTING DRAFT smoke test test for locating leaks in a pipe system by applying smoke under pressure internally from a suitable apparatus

socket bursting test

of the socket using an appropriate apparatus test carried out for acceptance of sockets of pipes or fittings by applying internal pressure to the walls water seal test test carried out to determine the effectiveness of the water seal in a trap

test certificate

certificatetest pressure that shows the results of tests undertaken to establish stated requirements

pressuretest specimen applied internally to pipes and fittings when being tested for strength and watertightness part or parts cut from a test piece and subjected to various tests

test opening

a plug for use in the hydrostatic testing of a pipeline opening with a removable cover in the body of a fitting and of sufficient size to permit the installation of thermal shut-off

operating safety feature wherein, if a thermostatic mixing tap is subjected to the shut-off of the cold or heated water supplied to it, the risk of scalding or cold shock to the user or person(s) exposed to the mixedthermosiphon water is minimized See solar water heater — terms thermosiphon head See solar water heater — terms thermostat-controlled water heater

See water heater . thermostatic mixing valve See valve thread runout tread washout

spacethreaded-end allowed adjacent connector to a shoulder to provide tooling clearance for cutting internal or external threads that it can be used to make a threaded joint connecting end on a pipe or fitting that is threaded either on an internal surface or external surface so threaded joint See joint throat radius junction See junction thrust block See anchor blocks toby box valve box

PUBLIC COMMENTING DRAFT water supply surface box, generally set flush with paving or other surface, to cover the stop tap or control valve of a total dissolved solids TDS total concentration of soluble material present in the water

Notetoxic 1 to entry: It is usually expressed in either parts per million (ppm) or milligrams per litre (mg/L). substance having detrimental health effects if consumed

trade waste See waste trafficable areas

areastranspiration subject to vehicular traffic transfer of water from plants into the atmosphere

transpiration bed

shallow excavation, containing agricultural pipes and filled with layers of graded material for disposing of the effluent from a septic tank by means of evaporation and transpiration from plant growth trap

fittingbottle designedtrap to retain a water seal for the purpose of preventing the passage of gases

trap in which the seal is maintained by an internal membrane, the configuration of which will not undulyboundary restrict trap the flow through the trap trap used to aerially disconnect the house drain from the sewer

combination trap trap with a swivel joint to facilitate use as an S-trap or P-trap

fixture trap .

trapgrease connected trap directly beneath the outlet of a fixture See arrestor gully trap receptacle to receive the discharge of wastewater prior to discharging to the drain and to maintain a water seal between the drain and the waste lines

integral trap

trapP-trap incorporated as part of a manufactured fixture trap constructed with the inlet leg vertical and the outlet leg inclined below the horizontal within

specifiedP-trap universal limits P-trap with a swivel joint on the outlet leg to facilitate alignment

S-trap trap in which the outlet leg is parallel to the inlet leg

S-trap universal

PUBLIC COMMENTING DRAFT S-trap with a swivel joint on the outlet leg to facilitate alignment

tube trap trap in which the seal is maintained without the use of an internal membrane

water trap

sewage system and entering a building fitting that uses water to maintain a seal to prevent foul air escaping from the plumbing system or

waterless trap

plumbing system or sewage system and entering a building fitting that uses means other than water to maintain a seal to prevent foul air escaping from the weir of trap lowest point of the outlet leg of a trap

trap seal test See water seal test trap vent See vent trap water seal depth of water retained in a trap which acts as a barrier to the passage of air through the trap

trailing water volume

from the outlet spigot of the pan remaining full flush volume of water discharged from the pan after the last four test pieces are expelled Note 1 to entry: The trailing volume is to ensure solids transportation within the sewer lines.

triple bowl sink See sink

. trough

openablution boxlike trough fixture for containing water

fixturelaundry for trough holding water for cleaning purposes which has a number of taps spaced to enable multiple use

fixture having one or more receptacles for temporarily retaining liquid during washing operations trough urinal See urinal trunk water main See main tube length of circular pipe of uniform cross-section

tube trap See trap tubular PUBLIC COMMENTING DRAFT

pipetundish fittings in the form of a pipe piece, nipple, longscrew, bend, spring or return bend

fitting into which pipework can discharge with an air gap

tungsten inert gas welding TIG process of electric welding where an arc is struck between the work piece and a tungsten electrode shielded by an inert gas commonly argon

Notetype 1 test to entry: A separate filler rod is required. See test ultra-violet light UV light rays that have a wavelength just shorter than the violet end of the visible light spectrum

uncontrolled water heater See water heater Union

fittingunion endfor connecting connector or disconnecting two pipes

connectorunion stop end tap for a pipe or fitting that allows a union joint to be made See tap unit construction

components of a tap that cannot be readily removed by unscrewing .

unrated system See solar water heater — terms untrapped floor drain See drain unvented solar water heater See solar water heater unvented water heater See water heater upstand

water at the wall junction extension of the material at the back or ends of a sanitary plumbing fixture to prevent the ingress of upstream vent See vent

urinal PUBLIC COMMENTING DRAFT sanitarymatching plumbing set single fixture stall forwall-hung the reception vacuum and urinal flushing away of urine urinal intended to operate with one or more matching vacuum interface and rinse valve(s)

single stall urinal

urinalslab urinal for single person usage, wall mounted or at floor level

urinal consisting of a flat impervious slab fixed on a wall, incorporating an integral channel

trough urinal urinal in the form of a trough for use by more than one person at the same time

wall-hung urinal

urinal fixed on the wall urinal stall

urinal having a back curved on plan to form a stall for the user with an integral floor channel Note 1 to entry: When stall urinals are fixed in ranges, division slabs are provided between each stall. vacuum condition condition where the pressure is lower than atmospheric pressure

buffer container for the temporary collection of wastewater on the atmospheric side of a vacuum interface valve

soil fixture interface valve assembly which consists of a vacuum interface valve, rinse valve, vacuum controller and actuator, which

formsvacuum part accumulative of the vacuum lift soil fixture sum of all increases in invert levels on the pathway for the drainage from any vacuum water closet or buffer to the vacuum station . vacuum automatic interface unit VAIU assembly consisting of a vacuum interface valve, buffer, sensor and vacuum controller

vacuum batch volume volume of wastewater discharge from the buffer or water closet during one cycle of the vacuum interface valve

vacuum branch pipeline section of pipeline that connects one or more vacuum water closet pans or vacuum automatic interface units or both to the vacuum main pipeline

vacuum controller device which, when activated, opens the vacuum interface valve and the vacuum water closet rinse valve (if installed)

vacuum drainage system

sanitary plumbing or drainage assembly of pipes, fittings and apparatus used to collect and convey the discharge from fixtures to the Note 1 to entry: A vacuum drainage system uses the pressure differential between ambient atmosphere (air) and sub-atmospheric pressure (partial vacuum) to create movement of air, soil and wastewater (discharge) through the pipeline to a point of discharge into sanitary plumbing or drainage. PUBLIC COMMENTING DRAFT Note 2 to entry: A vacuum drainage system should not be confused with a vacuum sewerage system which is used by a network utility operator to transport sewage from multiple properties.

vacuum generator equipment installed in the vacuum station to generate and maintain the operational vacuum level within the vacuum drainage system

vacuum interface valve valve that acts as an interface between the vacuum pressure in the vacuum pipeline and the atmospheric

pressureNote 1 to entry:at the Interfacefixture or valves buffer automatically open when a predetermined volume of wastewater has collected in the buffer or is actuated by means of button activation.

vacuum lift

interface unit to a vacuum branch or vacuum main pipeline increase in invert levels of the wastewater pathway from a vacuum soil fixture or vacuum automatic vacuum lift pipe vertical increase in elevation of the vacuum pipe invert level, achieved either with a vertical pipe

configurationvacuum loading or a units diagonal (typically 45°) configuration VLU unit of measurement of the load (air + wastewater) applied to a vacuum drainage system by various

main lines and branch lines vacuum fixtures that are connected to the vacuum drainage system, which is used to size pipes for vacuum main pipeline

or both to the vacuum station section of pipeline that connects one or more vacuum soil fixtures or vacuum automatic interface units Note 1 to entry: Vacuum branch pipelines may be connected to the vacuum main pipeline.

vacuum recovery time . time taken, after the operation of a vacuum interface valve, for the vacuum level at the vacuum interface valve to be restored to its operational pressure range

vacuum reforming pocket pipe assembly creating a low point within the vacuum pipeline to collect wastewater and reform the batch volume

Notevacuum 1 to entry:second Vacuum stage reforming lift pockets are configured as an open or closed pocket. lift in a vacuum branch line or vacuum main pipeline, distinguished from a reforming pocket in that the downstream end of the lift are to be vertical

vacuum sensor device that detects the presence of a pre-determined level of wastewater in a buffer, which results in a vacuum controller activating the vacuum interface valve to evacuate the wastewater from the buffer

vacuum soil fixture rinse valve

controlvacuum valve station designed to rinse and replenish the water in the vacuum soil fixture installation comprising a vacuum generator(s), control equipment and a means of waste discharge (forwarding pump or gravity outlet)

PUBLIC COMMENTING DRAFT Note 1 to entry: It may also incorporate vacuum wastewater collecting tank(s).

vacuum station forwarding pump pump which may be installed at the vacuum station to deliver the wastewater from the vacuum system to a connection to the gravity plumbing or drainage system that discharges to the sewer

vacuum water closet pan VWC pan pan with a matching assembly of vacuum interface valve, rinse valve, controller, and actuator

vacuum pump See pump vacuum relief valve See valve

valve

the movement (relative to the seating of a component) of a plate or disc, a door or gate, a piston, a plug device for controlling the flow of a fluid, having an aperture that can be wholly or partially closed by

orair a admittance ball or flexing valve of a diaphragm or gases out component fitted to a plumbing system allowing air to enter the piping system but not allowing air air valve <1> automatic valve for the discharge of air from, or the admission of air to, a water main, each

containing a buoyant ball which seats itself to close an orifice <2>ball manuallyvalve operated valve used to release air from a water pipe or fitting shut-off device, having a ball that can be turned to move its port(s) relative to the body seat-ports to

controlbutterfly the valve flow of liquid . transverse to that of the valve ports valve in which a disc is turned substantially through 90° from the closed to the open position on an axis check valve See non-return valve combination relief valve valve that combines the features of temperature and pressure-relief valves

delayed action float valve valve in which action is delayed until the level of the liquid rises or falls by a predetermined amount

diaphragm valve

valve in which a flexible diaphragm forms the closure member and in which the diaphragm isolates the fluiddouble controlled air valve by the valve

airdouble valve check having valve two chambers; one with a small orifice and the other with a large orifice See mechanical backflow prevention device dual check valve See mechanical backflow prevention device PUBLIC COMMENTING DRAFT equilibrium float valve

floatexpansion valve designed control valveso that the hydraulic forces on the closing plunger are in balance water during the normal heating cycle of the water heater and that is designed for installation on the pressure-activatedcold-water supply to valve the water that opens heater in response to an increase in pressure caused by the expansion of

float valve

valve for controlling the flow of a liquid into a cistern or other vessel that is operated by the movementflush valve of a float flusherette flushometer

manually operated hydraulic device which discharges a predetermined quantity of water to fixtures for flushingfoot valve purposes

non-returnfull way valve valve fitted at the bottom of a pump suction pipe to retain the water in the pipe

valvegate valve having the same internal bore as the connecting pipes that permits unrestricted flow

valve that affords a straight through flow and in which a sliding gate is moved in its own plane at right anglesglobe valve to the flow screwdown valve having a partially spherical body with a horizontal inlet and a horizontal or vertical outlet

Note 1 to entry: The valve sealing washer is attached to the valve spindle.

hydraulically operated automatic control valve .

valve that operates by means of water pressure where the pressure, flow and level control functions of the valve are via externally plumbed hydraulic or solenoid pilot valves and can have an orifice plate for flowinlet control pressure control valve

valveNote 1 designed to entry: Typically,to control it themay maximum be a pressure-reducing supply pressure valve, of pressure-limiting the cold water tovalve the or inlet pressure of a water ratio valve.heater isolating valve valve that isolates part of a water system from the remainder by withstanding water pressures both upstream and downstream of the isolating valve

jumper valve component of a screwdown valve or tap that forms the closing member of the valve

Note 1 to entry: This refers only to a loose jumper valve that is normally separate from the valve spindle.

Note 2 to entry: It is generally constructed of copper alloy or plastics.

kinetic air valve

airlevel valve control of such valve a design that escaping air does not cause the ball to seal the orifice

PUBLIC COMMENTING DRAFT predetermined levels valve for controlling the flow into a tank or vessel that operates when the water level rises or falls to detects changes in water level. Note 1 to entry: It may be actuated directly by a float or remotely by a float or pressure-sensing equipment which low pressure inlet valve gravity-fed inlet valve inlet valve intended for use with water supply pressures of 30kPa or less when measured at the cistern inlet

mechanical mixing valve

mixing valve valve of the non-thermostatic type that controls the temperature from the mixed water outlet

valve in which separate supplies of heated water and cold water are mixed together, either manually or automatically,non-return valve to give a desired temperature from the mixed water outlet of the valve valve to prevent reverse flow from the downstream section of a pipe to the section of pipe upstream pilot valve

auxiliaryplug valve valve operated hydraulically or electrically to activate the main valve valve consisting of an internal plug that can be turned to move its port(s) relative to the body seat ports

topressure-limiting control the flow of valve fluid above the set pressure valve that limits the outlet pressure to the set pressure, within specified limits only, at inlet pressures pressure ratio valve

valvepressure-reducing that automatically valve reduces outlet water pressure to a specified ratio of its inlet pressure valve that automatically reduces the pressure to below a predetermined value on the downstream side

of the valve .

pressure-relief valve

spring-loaded or weight-loaded valve for automatically controlling the build-up of excessive pressure in pipeworkpressure-sustaining or fittings by valve means of a discharge to atmosphere valve that automatically maintains a predetermined pressure on the upstream side of the valve

reflux valve

valverelief thatvalve prevents the reversal of flow by means of a flap or other mechanism

valvereverse that action will open float to valve release excess pressure from a system bottom water level float valve that is open when the float is at top water level and closed when the float is at

Noteright 1 angle to entry: meter Reverse assembly action float ball valves valve are used in large automatic flushing cisterns. below-ground or above-ground valve, having a lockable operating mechanism, for location adjustment to the property water meter

PUBLIC COMMENTING DRAFT Note 1 to entry: This valve may be installed with the copper riser at the time of the reticulation pipeline

installation,Note 2 to entry: laid overWhen at buried,90° and thisburied valve instead shall of be the installed termination in the ball same valve. manner as the termination ball valve complete with the open-threaded end capped or plugged.

Note 3 to entry: This valve may also be installed by a plumber at the time of property connection.

rinse valve valve to supply rinse and replenish water to the pan or single stall wall-hung urinal

safety valve

pressure-reliefservice connection valve ballfitted valve on, or close to, a boiler or unfired pressure vessel to the property service pipe which is shut only for maintenance, failure or disconnection of the below-grounddownstream installation valve for insertion into the water reticulation pipeline tapping fixture to deliver water service connection termination ball valve below-ground valve located at the property boundary for connection to the property riser at the meter assembly

Note 1 to entry: The valve is initially installed, charged, tested and left for the plumber in the closed position with any open threaded ends protected with a plastic cap or plug.

scour valve

valvescrewdown fitted to valve a pipe to allow scouring (cleaning or flushing) of the pipe perpendicular to the face of the body seat valve in which the disc is lifted from and lowered onto the body seat by a stem whose axis is service valve

appliance inlet and between the outlet of the water heater and the outlet header pipe valve for the isolation of a water heater or appliance that is fitted between the inlet header pipe and the single air valve .

airsludge valve valve with a single chamber having either a small orifice or a large orifice valve used for drawing off sludge from the bottom of a cistern or tank

sluice valve solid sliding gate valve, usually key or wheel operated, used for waterworks purposes

solenoid valve valve adapted for electrical remote control and actuated by a solenoid and plunger

stop valve

valvetemperature-relief that can be operated valve to stop the flow in a pipeline

temperature-actuated valve that automatically discharges fluid at a specified set temperature predetermined temperature in the event that energy input controls fail to function. Note 1 to entry: It is fitted to a water heater to prevent the temperature in the container exceeding a temperature-pressure-relief valve TPR valve spring-loaded automatic valve limiting the pressure and temperature by means of discharge and designed for installation on the hot side of a storage water heater

PUBLIC COMMENTING DRAFT tempering valve

to provide heated water at a lower temperature at one or more outlets mixing valve that is temperature actuated and is used to temper a heated water supply with cold water EXAMPLE 50 °C at each heated water outlet.

thermostatic mixing valve

controlled by a thermostatic element/sensor to a preselected temperature that is suitable for direct mixingcontact with valve the in skin which the temperature of the water from the mixed water outlet is automatically

vacuum relief valve pressure-actuated valve that automatically opens to relieve vacuum conditions

vented double check valve See mechanical backflow prevention device

valve cover See cover valve key See key valve opening percentage of valve stem travel from 0 % (fully closed) to 100 % (fully open)

vandal proof tap See tap lockshield velocity head See head vulcanize adhere the seal to the body by high temperature and the use of an agent

vent .

passage of gases pipe provided to limit the pressure fluctuations within the discharge pipe system or to encourage the branch vent

gradedbreather vent vent at any one floor level, interconnecting two or more individual trap vents or group vents

DN 50 vent from the topmost junction of a sealed gully riser to atmosphere and extending a minimum of 300common mm above vent the lowest fixture discharging to the sealed gully

vent installed at any floor level for venting the traps of not more than two fixtures individually connected Notecross-vent 1 to entry: It is normally a vertical extension of a graded pipe or branch. vent interconnecting a stack and its relief vent

downstream vent drainage vent located on, or connected to, a drain discharging to a boundary trap

educt vent terminal vent PUBLIC COMMENTING DRAFT

ventground allowing vent air to exit from the drain low-level vent induct vent vent allowing air to enter the drain

group vent

vent connected to a branch to which unvented fixture discharge pipes are connected

header vent vent that interconnects the tops of two or more relief vents or stack vents

high-level vent vent that terminates above roof level

induct vent See ground vent low-level vent See ground vent relief vent

ventstack installed vent in a stack below the lowest fixture

extensionterminal ventof a discharge stack above the highest connected discharge pipe See educt vent trap vent

waterseal in the trap vent pipe venting an individual trap to the open air or to a main or branch vent pipe to prevent floss of upstream vent vent installed adjacent to the upper end of a drain

vent cowl

and foreign matter sanitary fitting for installation on the outlet end of a vent pipe to prevent the ingress of birds, rodents vent pipe See pipe vented pipe See pipe vented double check valve See mechanical backflow prevention device vented solar water heater See solar water heater vented water heater See water heater venting <1> removal of foul gases from a sanitary installation to atmosphere by means of a vent pipe <2> allowing air to enter or escape from a soil or waste pipe for the purpose of preventing the breaking PUBLIC COMMENTING DRAFT of the water seal in the trap

vertical length of pipework which is vertical or makes an angle of less than 45° to the vertical

vitreous china

strong,vitreous high-grade enamel ceramic material made from a mixture of clays and other materials glazed coating fused on the metal surfaces for protection or decoration

vitrified clay

ceramicwall-hung ware water used closet for sewer pipes and fittings, consisting of a vitrified clay body without a surface glaze See water closet pan wall thickness

thickness thickness of the wall of the of awall pipe, measured fitting or at fixture, any point not aroundincluding the any circumference lining or coating of the pipe

Notewall-hung 1 to entry: urinal Commonly expressed as eᵧ. See urinal wall-hung water closet pan See water closet pan washdown water closet pan See water closet pan

waste

dischargefloor waste from a waste fixture or appliance .

gratedfreestanding inlet within waste a graded floor intended to drain the floor water using appliance such as a dishwasher or washing machine waste pipe (not connected to a fixture) to receive the discharge by a flexible hose connected from a pop-up waste

manually operated lever waste outlet fitted with a captive plug that is seated in, or lifted clear of, the waste outlet by means of a safe waste pipe connected to a safe tray to convey any water collected

standing waste

combinedNote 1 to entry: waste It plugconsists and of overflow a tube, the for bottom a sink endor wash-trough of which is tapered for sealing off the waste outlet around

its periphery. The top end of the tube terminates a short distance below spill-over level of the fixture forming an overflowtrade waste leading to the waste outlet. waterborne waste from any business, trade or manufacturing premises other than domestic sewage, stormwater or unpolluted water

PUBLIC COMMENTING DRAFT waste arrestor See arrestor waste fixture See fixture waste outlet See outlet

waste pipe See pipe waste plug See plug waste stack See stack wastewater spent or used water of a community or industry that contains dissolved and suspended matter

water-charged ground ground subject to a high water-table condition

water closet WC compartment in which a WC pan is installed

water closet pan WC pan

for the disposal of human wastes receptacle in the form of a bowl incorporating a water seal used in conjunction with a flushing device chemical water closet pan . and deodorant properties portable or fixed receptacle for human wastes in which chemicals are added, generally with disinfectant close coupled water closet pan

toiletcorbel suite water with closet a flushing pan cistern that is directly coupled to the pan

WCmatching pan projecting set vacuum from pan a wall in order to support the fixture clear of the floor vacuum pan intended to operate with one or more matching vacuum interface and rinse valve(s)

pan with a rim pan with an inlet detail to direct water around the inside of a bowl with an inner rim encircling more than 50 % of the inside rim

pan without a rim pan with an inlet detail to direct water around the inside of a bowl with an inner rim encircling not more than 50 % of the inside rim

pedestal water closet pan

floor-mountedsiphonic water WC closet pan pan PUBLIC COMMENTING DRAFT WCwall-hung pan in which water the closet contents pan are removed by siphonic action induced by the flushing water

sanitarywashdown fixture water hung closet or cantilevered pan from a wall

WC pan from which the contents can be removed by a flush of water discharged into the pan from the flushingwater closet rim cistern See cistern

water closet seat

top of a WC pan seat of wood, plastics or other impervious material (with or without a hinged cover) made to fit the water closet suite

sanitarywater contamination fixture consisting test of a WC pan, seat, cistern and any necessary flush pipe See test water cooling equipment See cooling equipment water hammer pressure surges in a closed pipe system as the result of a sudden change in velocity of the liquid EXAMPLE Valve closure or pump start or stoppage.

water-hammer arrestor device to lessen or eliminate water hammer

water heating appliance appliance that provides water-heating function

water heater appliance to provide heated water . auxiliary water heater

secondaryheater or system water heating device having a coil or container fitted to cooking or heating equipment or a flue assembly, fuelled by an uncontrolled heat source, and used to supplement a primary water Note 1 to entry: Refers to uncontrolled thermal energy.

boiler vented water heater designed to provide boiling or near boiling water

central heating water heater water heating system designed to heat the environment within a building by circulating heated water through a pipe network or other device

cistern-fed water heater vented water heater supplied with cold water from a static feed tank in which the level of the water is automatically maintained

controlled pressure water heater unvented water heater for direct connection to the water supply system but having a pressure- temperature relief valve setting of less than 1.4 MPa

Note 1 to entry: A pressure-limiting valve or similar device is normally required to be installed on the cold-water supply inlet. PUBLIC COMMENTING DRAFT displacement water heater water heater in which cold water is fed into the container at or near the bottom, displacing but not

mixingfalling levelwith thewater heated heater water as it is drawn off at or near the top non-displacement water heater with the water surface being open to the atmosphere in which heated water is drawn off at or near the bottom with the level of the water falling as the heated water is drawn off

free outlet water heater vented water heater containing a permanently open outlet from which heated water is discharged by

the inlet water feed pipe displacement from a storage container with the flow of water being controlled by means of a valve in heat exchange water heater water heater in which drinking water is heated by a heat transfer system that maintains a physical

separation between a primary heat transfer fluid and the drinking water Note 1 to entry: The primary heat transfer fluid may be distilled, demineralized or drinking water and may containinstantaneous specific refrigerants water heater or chemicals.

unventedlow pressure water water heater heater in which the heat energy is applied only while the water flows to an outlet i.e., not a zero-pressure water heater water heater to work under a pressure not exceeding 12 m head and not having a free water surface, mains pressure water heater unvented water heater designed for direct connection to the water supply system and having a

pressure-temperature-reliefpre-heater water heater valve setting not exceeding 1.4 MPa water heater not containing a means of supplementary heating and installed to preheat the cold-water supply prior to its entry into any other type of household water heater

Note 1 to entry: Waste heat recovery from air-conditioning condensers may be utilized to pre-heat household . water heaters.

reduced-pressure water heater displacement water heater designed to operate at a pressure below the normal water main inlet

pressureside-fed waterand to heaterbe installed with a pressure control device fitted on the inlet displacement water heater with a free water surface in which the cold water is supplied from an integral feed tank cistern attached to the side of the heater and the heated water is drawn off at an outlet located below the free water surface

storage water heater water heater that incorporates a thermally insulated container in which the water is heated and stored for subsequent use

supplementary water heater additional appliance or device supplying water heated by a controlled heat source and used to supplement a primary water heater or system

Note 1 to entry: Refers to controlled thermal energy.

temperature limited water heater 45 °C limited water heater

PUBLIC COMMENTING DRAFT to the water heater and used primarily for personal hygiene purposes to no greater than 45 °C water heater that limits the water temperature at the outlet from sanitary fixtures that are connected 50 °C limited water heater

to the water heater and used primarily for personal hygiene purposes to no greater than 50 °C Water heater that limits the water temperature at the outlet from sanitary fixtures that are connected thermostat controlled water heater water heater in which the heat energy is supplied in response to a thermostat temperature indication

for water flow on the outlet side of the heater

uncontrolled energy water heater water heater in which the heat energy is provided by an uncontrolled heat source

EXAMPLE Solids combustion heater.

unvented water heater water heater in which no provision is made for a vent permanently open to atmosphere

valve-vented storage heater storage water heater in which the required venting to the atmosphere is controlled by a valve water heater in which provision is made for a vent permanently open to atmosphere

water heater lining water-resistant material applied to the internal surface of a water heater container and subject to direct contact with the water within the container

water main See main water pump See pump water seal See trap water seal

water seal test . See test water service

and appliances cold-water supply pipework from the water main up to and including the outlet valves at fixtures water service joint off-take

service to serve two or more dwelling units on the same property pipes and fittings used or intended to be used in connection with the supply of water from a joint water water service pipe See pipe water servicing weir water supply located along the top edge of the urinal wall and formed to release water to wash walls and wall ends

water storage tank See tank

water supply alternative water supply system PUBLIC COMMENTING DRAFT water not intended for human consumption that is sourced from locations other than a dedicated drinking water supply

EXAMPLE Rivers, bores, ground water, creeks, lakes or drinking water reclaimed after use.

cold water

water at a temperature of up to approximately 25 °C

grey water reuse systems system where grey water (wastewater but not soil or black water) is collected, not treated and re-used for acceptable purposes

network utility operator’s supply drinking water provided by a water distributor through a reticulated water system

recycled water water that has been treated and provided for reuse by a water distributor through a reticulated water system

reticulated disinfected reclaimed water systems system where soiled water is collected, treated to acceptable minimum standards of controlled disinfection and then reticulated to properties

water supply system water sourced from a network utility operator’s supply

water table normal level of ground water

water test See test water volume control .

deviceNote 1 to used entry: to controlIt is an integral the rate part of dischargeof an end-of-line of the valve mixed or waterconnected to the outlet for an in-line valve. Note 2 to entry: It may incorporate a temperature control valve.

watercourse

depressionWC pan where accumulated natural surface water flows See water closet pan weep flange See flange weir of trap See trap welded joint See joint wet well

raise the contents to a suitable disposal point below-ground chamber for the collection of sewage or wastewater and fitted with a pumping device to with-pitch installation PUBLIC COMMENTING DRAFT See solar water heater — terms warranty statement by the manufacturer or supplier of a product stating that the product is suitable under

specifiedNote 1 to entry:conditions The conditions may be limits on water pressure, water temperature repetitive movement or

flexation after installation, or any other operational circumstances.

working head See head working pressure See pressure working temperature

being transported or the environmental conditions in gas installations operating temperature of a pipework system which is influenced by either the temperature of the water working water level

levelwrapping to which the water in a storage tank or cistern is filled to give normal discharge capacity protective material closely wrapped around a pipe to protect the pipe and coating against corrosion

wrenching flats

machinedwrought or cast flats on a fitting to allow use of a suitable wrench hot or cold plastic deformation of products

combination. Note 1 to entry: Processes include extruding, hot rolling, cold rolling or drawing, either exclusively or in Y junction 45° junction See junction . PUBLIC COMMENTING DRAFT

REDLINE

VERSION . This is a draft document made available by Standards Australia to the registered licensee solely for review in providingAny other use public of the document comment. is prohibited. The registered licensee may print once only. Further copying, storage, distributionFull licence terms or are use available on network at https://www.standards.org.au/home/public-comment-document-licence-agreement is prohibited. Standards Australia Limited does not warrant or represent that the draft document is accurate or complete or that it should be relied on for any particular purpose. Any user of the document should rely on the final published version. DR AS/NZS 3500.0:2020

Preface

This document was prepared by the joint Standards Australia/Standards New Zealand Committee WS 014, National Plumbing and Drainage Code, to supersede AS/NZS 3500.0 — 1995, National —2003, Plumbing and Drainage Code , Part 0: Glossary of terms. ‐ The objective of this document is to specify the common plumbing and drainage terms and associated definitions that are used in areas of the plumbing and drainage sector including product manufacturing specifications, design and installation standards (such as the AS/NZS 3500 series) and regulatory documents.

This revision of this Standard has been develop to complement the Plumbing Code of Australia and incorporateswas conducted to ensure consistency between other documents and incorporate amendments and additions arising from industry requirements.

This Standard is partA list of a series, underall parts in the title Plumbing and Drainage, as follows:

AS/NZS 3500, Plumbing and drainage

AS/NZS 3500.0, Plumbing and drainage, Part 0: Glossary of terms (this Standard)

AS/NZS 3500.1, Plumbing and drainage, Part 1: Water services

AS/NZS 3500.2, Plumbing and drainage, Part 2: Sanitary series for plumbing and drainage systemscan be found in the Standards Australia and Standards New Zealand online catalogues.

1 Scope .

This document specifies common plumbing and drainage terms and associated definitions used in the plumbing and drainage sector including product manufacturing specifications, design and installation standards (such as the AS/NZS 3500 series) and regulatory documents.

It is primarily intended for the general water industryand waste industries and for use in the interpretation of terminology used in the various parts of the Plumbing and drainage series of Standards and covers water supply from the reticulation main into the premises, including hot water service systems, sanitary fixtures, drainage and their associated water and waste fittings, pipe systems and associated components AS/NZS 3500 series .

2 Normative references

There are no normative references in this document.

3 Terms and definitions

DRAFTING NOTE: This glossary has been edited without allocating numbers to terms which would enable the term groupings to be clear. As this is a manual task, this will be done post Public Comment. Please concentrate on the term and its meaning, not its position. ‐ ablution trough See trough

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soakaway pit, trench or well dug into permeable ground, filled with broken stone, bricks or large granular material and usually covered with earth, where liquid may soak away into the ground

absorption test

See test

access chamber See chamber access cover

See cover access fitting

See fitting access opening

an opening in a building element, fitted with a removable cover, to allow maintenance of a concealed pipe, fixture or other apparatus access pipe

See pipe access point

. a place where access may be made to a drain for inspection, cleaning or maintenance; may include an inspection point, rodding point, inspection chamber or access chamber

accessible

capable of being reached for the purposes of inspection, maintenance, repair, or replacement, but may first require removal of an access panel, cover, door or similar obstruction

See also readily accessible

adaptor fitting See fitting aeration systems system designed to treat liquid waste by the processes of air injection aerator a device to introduce air into the flow of a liquid

aerobic a state where molecularfree oxygen is present aerobic treatment systems

See aeration systems

against‐pitch installation See solar water heater — terms air admittance valve

See valve

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See cooling equipment air eliminator

a device which opens to release accumulated air from a hydraulic system and which automatically closes in the presence of a liquid

air gap

1 unobstructed vertical distance through the free atmosphere between the outlet of a discharge or waste pipe and the overflow level of the receptacle into which it is discharging

2 unobstructed vertical distance through the free atmosphere between the lowest opening of a water service pipe or fixed outlet supplying water to a fixture or receptacle and the highest possible water level of such fixture or receptacle . air separation distance distance between the outlet of the inlet valve and the spill level air test

See test air valve

See valve air venting

allowing air to enter or escape from a confined space to facilitate movement . air vessel a vessel that utilizes the compressibility of contained air to promote a more uniform flow of water air/water pressure vessel aaccumulator tank vessel in which water is stored under pressure of compressed air. Note 1 to entry: The vessel forms part of a pumped water supply system.

Note 2 to entry: Variations in the amount of water stored are accompanied by variations in the pressure of the air and can be used to control the stopping and starting of the pumps.

airlift a method of raising liquid by the injection of compressed air airlift pump

See pump

airlock <1 an> airspace with doors separating a water closet or urinal apartment and an adjacent room

<2 > air in a pipe, which that stops the flow of liquid in a pumping or gravity circuit allowable maximum operating pressure

See pressure allowable test pressure

See pressure

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prevent pipe movement. Sometimes referred to as thrust blocks anchorage means of preventing movement of pipes or fittings that are subject to unbalanced forces angle of fitting

See fitting angle of inclination

See solar water heater — terms (latitude, orientation, tilt angle and solar altitude) annual exceedance probability

AEP probability that a given total (quantity) of rainfall, accumulated over a given duration, will be exceeded in any one year

Note 1 to entry: AEP is expressed as a percentage, which may be an intensity (mm/h) or a depth of rainfall (mm). AEP is based on statistical analysis of rainfall records. anode the negative electrode of a galvanic couple, which that corrodes preferentially to the positive . electrode (cathode) appliance a piece of equipment designed to connect to a plumbing system to perform a specific task apparatus technical equipment used to perform a particular activity or installed for a purpose aqueduct any water supply channel Note 1 to entry: The aqueduct will be vested in, belongingbelong to, or be under the control of the responsible authority . arrestor an apparatus designed to intercept and retain silt, sand, oil, grease, sludge or other substancesubstances that isare a prohibited discharge to the sewerage or drainage system atmospheric vacuum breaker

See backflow prevention device authority

See regulatory authority authorized applies to materials, products, fixtures, appliances and apparatus that are sanctioned for use in the area of jurisdiction of the authorizing authority autoclave

See sterilizer autogenous welded joint

See joint

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See tank automatic hand washing station unit which automatically mixes water, soap and air for hygienic hand washing autopsy table a fixture upon which post mortem examinations are performed and thatwhich has provision for drainage to the sanitary plumbing system ‐ auxiliary pressure‐relief device pressure operated device forming part of an expansion control valve, temperature relief valve, or temperature and pressure relief valve ‐ ‐ Note 1 to entry: In the event of blockage of the drain outlet, the device should provide —

(a) expansion relief (expansion control valves); (b) safety relief (temperature relief‐ valves); or (c) both expansion and safety‐relief (temperature/pressure relief valves). auxiliary water heater ‐ See water heater average flush volume one full flush discharge volume and four reduced flush discharge volumes

average recurrence interval . ‐ ‐ the ARI mean timeor expected value of the periods between exceedances of some quantity such as a designgiven rainfall intensity or total accumulated over a stormwater flow, usedgiven duration

Note 1 to specify suitable design rainfall intensitiesentry: ARI is an average value based on statistical analysis. The periods between exceedances are generally random.

back fall See fall back‐siphonage backflow that occurs when the reversal of flow of water supplycaused by negative pressure falls below atmospheric pressurein the distributing pipes of a water service or supply backfill

See fill backflow

1 flow in a direction contrary to the normal or intended direction of flow 2 the unintended flow of water from a potentially polluted source into a potable water supply backflow condition any arrangementsituation whereby backflow may occur

backflow prevention device a device to prevent the reverse flow of water from a potentially polluted source into a potable water supply system

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Note 1 to entry: The device operates automatically to admit air into the downstream chamber of the valve whenever the pressure in the chamber reduces to or falls below atmospheric pressure. double check valve a device to prevent backflow caused by back siphonage or backpressure, and which has with two independently operating force loaded non return valves and ‐ Note 1 to entry: The device incorporates specific test points for in service testing. ‐ dual check valve ‐ a device to prevent backflow caused by back siphonage or backpressure, which incorporates with two independently operating force loaded non return valves ‐ dual check valve with atmospheric port ‐ ‐ a device to prevent backflow caused by back siphonage or backpressure, which incorporates with a ventilation port and two independently operating force loaded non return valves which ‐ Note 1 to entry: The ventilation port and non return valves prevent backpressure when operative, and which automatically admits admit air to the chamber between the‐ non return‐ valves , when the upstream non return valve becomes inoperative . ‐ ‐ hose‐ connection vacuum breaker a device fitted to a hose tap to prevent backflow in a water reticulation system caused by either back siphonage or backpressure, whichthat operates automatically to admit air into the system under back siphonage ‐conditions and vents the system to atmosphere under backpressure

conditions‐ . ‐ pipe interrupter device non mechanical backflow prevention device with a permanent unrestricted air inlet, installed so that the flow of water is in a vertical downward direction ‐ pressure type vacuum breaker a device to prevent backflow caused by back siphonage, which incorporates with a force loaded ventilation valve, and operatesoperating automatically to admit air into the downstream chamber of the valve whenever the pressure in the chamber‐ reduces to 7 kPa ‐

Note 1 to entry: The device incorporates specific test points for in service testing. reduced pressure zone device ‐ a device to prevent backflow caused by either back siphonage or backpressure in a water reticulation system, which incorporates with two independently operating force loaded non return valves and ‐ ‐ ‐ Note 1 to entry: The device automatically drains to waste whenever the pressure in the system between the upstream and downstream non return valves reduces to a pressure not less than 14 kPa below the pressure at the inlet to the upstream non return valve . ‐ Note 2 to entry: The device incorporates specific‐ test points for in service testing. registered air gap ‐ a device or system installed for backflow prevention that has been registered by, or on behalf of, a regulatory authority for the purposes of inspection and maintenance to ensure its continued functionality registered break tank

, whichtank system designed specifically for backflow prevention that has been registered by, or on behalf of, a regulatory authority for the purposes of inspection and maintenance to ensure of its functional requirements continued functionality

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<1 any> backflow prevention device that is provided with test taps for the purpose of testing its operation

<2 a> registered break tank; or a registered air gap

backnut a thin threaded nut, which can be dished on one face to retain a seal, used to form a watertight joint on a longscrew or similar component, i.e., tapware nut that retains surface mounted tapware backpressure ‐ the difference between the pressure within any water service and a higher pressure within any vessel or pipework to which it is connected

bain‐marie

a device designed to keep food warm for serving by placing the food in a container that sits on a specially designed tray for heating water

ball joint

See joint

ball valve .

See valve band clamped sleeve joint

See joint bar chair a unit for supporting steel reinforcement while pouring concrete bar sink

See sink barrel (of pipe) the longitudinal section of pipe, which that does not include the jointing portion barrel nipple

See nipple barrel union

a fitting for connecting together and disconnecting two pipes basement the floor space of a building, which that is substantially or wholly below the level of the adjoining ground surface

basin

a fixture for holding water for ablutionary purposes, which may be designed for mounting in a corner, mounted on a floor supported pedestal, attached to a wall by means of brackets and screws, or set in a vanity top

bath

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eye (wash)

a bathconcave receptacle consisting of a small bowl with jets of water controlled by a hand or foot operated valve ‐ foot bath ‐ a bath fixed at a low level for washing or soaking feet shower bath

a bath combined with a shower outlet spa bath a bath with the facility for injecting air and jets of turbulent water into water contained in the bath therapeutic bath

appliance in which the human body may be immersed in water for ablutionary or treatment purposes

Note 1 to entry: The appliance may include but is not limited to, integral components that control the inflow and outflow of water, and water temperature.

bathroom appliance product that integrates dedicated fixtures appliances and fittings into a functional unit for easy connection to the plumbing infrastructure bath and shower connector . fitting that is interposed between a fixture outlet and a waste trap to facilitate installation or attenuate the effects of thermally induced movement, or both

batter

permanent outward fall in the walls of a urinal slab or stall to ensure adequate cleansing of walls

slope of the sides of an excavation or soil fixture (i.e., urinal) bearing capacity (of soil) the safe load, per unit area, that the soil can carry bedding material placed beneath and around a pipe to provide support for the pipeline bedpan macerator

a fixture to macerate paper machepapier mâché single use receptacles and their contents in a sanitary manner. ‐ ‐ ‐ Note 1 to entry: It incorporates an internal flushing and sanitizing cycle after every usage. bedpan washer sterilizer a sanitary fixture in which bedpans and urine bottles may be emptied or cleansed. Note 1 to entry: It incorporates a flushing apparatus and may also be a sanitizersterilizer. belled end joint See joint bench

the<1> floor area of a chamber graded to the channel <2> steps cut into the side of an open pit or trench

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bend a short length of pipe or a manufactured fitting used to make a change in direction in pipework inspection opening bend

a sanitary drainage bend that incorporates an inspection opening long bend a pipe bend having a centre line radius of curvature equal to or greater than 3 times its internal diameter ‐ pan bend

a soil pipe bend terminating in a socket to receive the spigot of a sanitary fixture, e.g., EXAMPLE: WC pan. reducing bend a fitting in the form of a bend in which the internal diameter is reduced return bend a pipe used in making ato change of direction ofby 180° short bend

a pipe bend having a radius at the centre line equal to or less than its internal diameter spring bend ‐ a pipe or fitting used in making ato change in direction ofby less than 90 degrees° . bib tap See tap bidet a sanitary fixture equipped with a douche device for producing a jet of water, from a point below the rim of the pan, which can be applied to the body

bidette

a sanitary fixture equipped with a douche but with over rim type water outlets, providing an airgap blank flange

See flange blue metal crushed graded quarry stone, which does not disintegrate over time boiler

See water heater boiling water unit

an apparatus for providing a continuous supply of boiling water bolted gland joint

See joint bonded glued or adhered

boss

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bottle trap See trap boundary trap

See trap boundary trap riser

a vertical shaft that extends the inlet leg of a boundary trap to ground surface level to provide access to the drain for inspection, cleaning and maintenance purposes. The riser may be sealed with an airtight cap or terminate as a ground vent

Note 1 to entry: The riser may be sealed with an airtight cap or terminate as a ground vent. bracket a projecting support for a shelf, pipe or other part branch drain

See drain branch pipe . See pipe branch vent

See vent brazed joint

See joint brazing

the process of joining metals in which a molten non ferrous filler metal is drawn by capillary action into the space between closely adjacent surfaces of the parts to be joined. The melting point of the filler metal is normally above 500°C but always‐ below the melting temperature of the metals being joined

Note 1 to entry: The melting point of the filler metal is normally above 500 °C but always below the melting temperature of the metals being joined. brazing alloy a non ferrous alloy, applied in the molten state, for joining together metal components by brazing break pressure tank ‐ See tank break tank

See tank brittle failure type of failure of the material in pipe form during pressure testing, where the pipe exhibits no plastic deformation visible to the naked eye (normal or corrected vision) bronze welded joint

See joint bucket pump

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See sink butterfly valve

See valve bylaws regulations made by local and other authorities under relevant legislation bypass an alternative path for diverting the flow of liquid around instead of through a fitting or apparatus

calorifier an apparatus for indirect heating of water in a vessel, the source of heat being a separate coil of heated pipes immersed in the water

cap and lining

a fitting being a sleeve, one end of which is suitable for connection to another fitting or component and the other end having a shouldered end and loose coupling nut to connect to a threaded fitting

capacity (of vessel) the cistern maximum volume capable of being contained in a vessel capacity (of cistern) . the volume calculated by measuring up to the marked water level pump capacity (storage water heater) the nominal storage capacity in litres capacity (of storage tank) capacity the volume of water above the invert of the outlet pipe when the water surface in the tank is 20 mm below the overflow level storage water heater capacity (of pumps) the rated flowrate measured against a specified head nominal storage capacity in litres vessel capacity maximum volume capable of being contained in a vessel

capillary fitting See fitting capillary joint

See joint cast

a general term for products at or near finished shape formed by solidification of a molten metal or alloy in a mould cathodic protection a method of protecting a metal against corrosion by lowering the potential of the metal surface by means of an impressed current or by connection to a sacrificial anode

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the formation, growth and collapse of vapour cavities in a liquid following a drop in pressure Note 1 to entry: The drop in pressure is usually associated with a large local increase in velocity, as in a pump . cement mortar joint See joint central heating water heater

See water heater centre‐line radius

the radius (of a bend) measured to the centre line of the pipe centrifugal pump ‐ See pump

chamber a compartment or enclosed space for air or water usage access chamber

a below ground structure with a sealed cover constructed in the line of a sanitary drain, to facilitate maintenance of the drain ‐ air chamber . a vessel that utilizes the compressibility of contained air to minimize shock due to water hammer, when connected to a pressurized water system

flushing chamber

a chamber atin which water for flushing is introduced into a drainage or sewerage system inspection chamber an accesschamber constructed in a drainage system to facilitate inspecting, testing, or the clearance of obstructions precast chamber

a pre constructed facility in a drain or sewer to provide access for inspecting or testing purposes or for the clearance of obstructions. It consists of a chamber that is accessible through a removable ‐ cover

Note 1 to entry: It consists of a chamber that is accessible through a removable cover. pressurized chamber an enclosed space where the pressure is above atmospheric pressure side entrance chamber a chamber so constructed so that the access shaft is not directly over the sewer line and in which access to the sewer is obtained by a passage or an extension to the chamber

chamber base the floor section, commonly cast in situ, that provides a base for the wall sections of the chamber and contains the flow channels

chamber cover slab

a precast unit for installation on top of the wall sections to act as the top of the chamber, and upon which the height adjustment rings and cover are located

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channel

an open graded passage for the conveyance of liquids charge pipe

See pipe chase a narrow channel formed in a wall or floor for recessing a pipeline below the surface check valve

See non‐return valve chemical water closet pan

See water closet pan chlorination

the addition of chlorine for disinfection circulation pipe

See pipe

cistern a tank in thatwhich water is stored at atmospheric pressure, the water being Note 1 to entry: Water is normally received through a float control valve set at a predetermined level and . incorporating an air gap . flushing cistern a cistern that is capable of discharging a measured quantity of water, either automatically at intervals regulated by the rate at which water is fed to the cistern, or by manual operation of the flushing mechanism

water closet (WC) cistern a flushing cistern designed to be installed in conjunction with a WC pan, which incorporates a mechanism, (normally a float control valve,) to control the water level. It may be any of the following types:

(a) Concealed — Designed intended to operate directly coupled to the water

closet pan or other soil waste fixture ‐ designed for concealed installation in a wall, duct or cavity.

(b) High designed to operate when the dimension from the base of ‐ the cistern to the top of the pan is not less than 550 mm. ‐ (c) Mid level — Designed to operate when the dimension from the base of the cistern to the top

of the pan is between 550 mm and 350 mm.

(d) Low level — Designed designed to operate when the dimension from the base

of the cistern to the top of the pan is less than 350 mm. ‐ (e) Manual cistern in which the flush is activated by a manual

operation, and capable of giving flushes of two different volumes, either of which can be selected by the user.

(f) Manual cistern in which the flush is activated by a manual

operation, and which is capable of giving only one flush volume.

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cistern fed water heater See water heater class

allowable operating pressure expressed in hundreds of kilopascals cleaners’ sink

See sink cleaning eye

a small access opening in a pipe or pipe fitting positioned to facilitate the clearing of obstructions and fitted with a removable and resealing cap or plug

clip fastener

a fixing arrangement designed to bolt, screw, fasten or otherwise fix or mount plumbing products or related items

close coupled solar water heater

See solar water heater close coupled water closet pan

See water closet pan close taper nipple

See nipple . closet

See water closet closing temperature temperature at the inlet of the valve that first allows it to close clothes washing machine appliance for washing laundry which uses water coating protective material applied to the surface of a pipe, fitting or valve coating defect detectable weakness or discontinuity in a coating, which is deemed to be suspect in its ability to protect the substrate from corrosion during its normal service life cold water water that has not been intentionally heated

collar pipe fitting in the form of a sleeve, for jointing the spigot ends of two pipes in the same alignment double collar

an arrangement for joining two spigot ends of pipe finishing collar

fitting for attachingattachment to the riser of an external disconnector gully into which a grating can be seated split collar

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collector See solar water heater — terms cross‐pitch installation

See solar water heater — terms collector aperture

See solar water heater — terms collector

See solar water heater — terms combination relief valve

See valve combined pipe

See pipe combined stack

See stack combined tap

See tap commercial fixture or appliance

fixture or appliance that is designed for use in commercial situations . common discharge pipe

See pipe common effluent (drainage) system system for collecting and removing effluent from a group of properties common vent

See vent compaction

the process of consolidating soil or other materials by mechanical or other means compression fitting

See fitting compression joint

See joint compatible material material that does not adversely interact with other materials with which they are in contact compressive strength

' ()fc the bearing strength of concrete component part or sub assembly of parts that contributes to the construction of a larger assembly or system compounds ‐ either pre compounded ABS resins or ABS resins to which masterbatch, containing additives such as UV inhibitors heat stabilizers and antioxidants, have been added ‐

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See joint compressive strength bearing strength of concrete concrete surround

1 concrete encasing of a pipe or fitting; or 2 the concrete margin around a valve box cover, hydrant cover or similar device

concrete encasing of a pipe or fitting condensate liquid condensed from a vapour conductivity (of

measure of the concentration of dissolved solids and Note 1 to entry: It is usually expressed in microsiemens/cm. conduit pipe or other closed passage, for the conveyance of liquids connection

<1 the> short section of pipe connector which connectsjoins the supply pipe to a fixture

<2 the> servicing of a property with water supply or sanitary drainage or effluent disposal . container

See tank contaminant any solidsolids, organisms, liquidliquids or gasgases entering, or with the potential to enter and pollute, the potable water supply

contaminated area

any area of land that is contaminated by substances or organisms detrimental to health, including any area of a sanitary depot or water pollution control plant, or any sewer, sanitary drain, ashpit, tank, pond, cistern, manure bin, or the like areas subject to bacterial or chemical pollution

EXAMPLE Ash pits, tanks, ponds, manure bins, waste disposal depots and wastewater treatment works. contamination of water test See test contingency reserve

water held in storage for use in the event of an interruption to the normal supply continuous support pipe is said to be continuously supported when it is —pipe (a) pipe placed on a cradle extending the length of the barrel, with the cradle following the contour of the pipe to a defined height; or

(b) pipe laid with socket holes dug into the bedding material, which is spread so as to give even and continuous providing support to the pipe between sockets. controlled‐pressure water heater

See water heater

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‐ cooling facility facility designed to coollower the temperature of trade waste or water sufficiently before being discharged corbel water closet pan

See water closet pan corrosive area

environment, usually below ground, where substances are present which are corrosive to metallic components

coupling pipe fitting used for connecting togetherto connect pipes, fittings or fixtures

bayonet coupling . fitting used to connect discharge hoses from portable facility to a soil dump point bayonet expansion coupling coupling that permits longitudinal movement of the joined parts (relative to each other), caused by expansion and contraction due to temperature change)

Note 1 to entry: Longitudinal movement is caused by expansion and contraction due to temperature change. bayonet flexible coupling coupling that permits movement of the connected pipework out of its original alignment, or permits the jointing of components that are not truly aligned gibault coupling

coupling that uses mechanical means and rubber seals to effectaffect a joint between two pipes in the same alignment hose tap coupling

coupling that is attached to the inlet end of a hose, and havinghas a loose threaded nut for attachment to a hose tap

insulating coupling

pipe fitting that breaks the electrical continuity between adjacent pipes, fittings or fixtures

cover <1 > apparatus consisting of a removable lid and a lid support, which is generally usually installed at ground surface level

<2 the> vertical distance between the top of the pipe and the finished surface access cover

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box fitted for ready access to a fire hydrant inspection opening cover

cover for protecting and providing access to a below ground inspection opening valve cover ‐ cover for locating, protecting and providing access to a valve arrangement

cover chamber space above the operating mechanism in which the water pressure is applied to close the valve or relieved to open the valve cradle structure for supporting a pipe or apparatus from beneath and from the sides cross‐connection actual or potential connection between a water supply and any contaminant cross‐fitting

See fitting cross‐linked polyethylene

PE‐X structures within the polyethylene polymer chains that are interconnected by chemical bonds to create a three dimensional polymer network . Note 1 to entry: The properties of the three dimensional structure ensure that it is not possible to melt or dissolve the polymer.‐ The extent of cross linking is related to the mass of insoluble material remaining following solvent extraction and can be determined‐ by measurement of the gel content. ‐ cross‐pitch installation See solar water heater — terms cross‐vent

See vent cross‐connection any connection or arrangement, physical or otherwise, between any potable water supply system either directly or indirectly connected to a water main, and any fixture, storage tank, receptacle, equipment or device through which it may be possible for any non potable, used, unclean, polluted or contaminated water, or any other substance, to enter any part of such potable water system under any conditions ‐ crown the highest point on the external surface of a pipe or culvert at any cross section crown (of trap) ‐ the topmost point of the outlet leg of a trap croxed fitting

See fitting croxed joint

See joint cyclic actuator device capable of activating the product under test through the cycles of movements, to simulate normal usage over a relatively short period of time

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sections of pipe that do not allow the water in the pipe to circulate and/or flow Note 1 to entry: for example, where fixtures have been deleted and pipes capped at the point of use.

branch pipe in a hot water system service containing dead water any branch off a heated water circulatory system dead water

the water that incapable of being flushed from cold water services cold water drawn off before hotheated water commences to discharge from a hotheated water outlet delayed action float valve

See valve

dental dental console chair and associated equipment required to perform dental work on a patient dental cuspidor fixture for use in a dental surgery for the reception of mouth washings . dental equipment

fixture or apparatus for use in a dental surgery dental evacuation equipment

fixture designed to operate below atmospheric pressure and remove saliva and dental waste material from the mouth of a patient into a catchment receptacle that permits liquid waste to gravitate from, or be forced to, a drainage point with or without the assistance of water

dental unit mobile or fixed piece of equipment usually with a chair or other accessories or utilities necessary for dental examinations

depth of water seal the vertical distance measured between the dip and the crown weir of a trap design life the period of time, stated by the manufacturer, that a device or system is expected to perform without requiring major maintenance or replacement

determined airflow capacity airflow, in litres per second, while producing a pressure of 250 Pa ± 10 Pa at the manometer tapping − developed length the total length along the centre line of a pipe and fittings including all bends dezincification ‐ corrosion of copper/ or zinc alloys involving loss of zinc and leaving a residue of spongy or porous copper

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DN numerical designation of size, common to all components in a piping system other than components designated by outside diameters or by thread size

Note 1 to entry: Nominal size is designated by DN followed by a number.

Note 2 to entry: It is a convenient round number for reference purposes and is only loosely related to manufacturing dimensions.

Note 3 to entry: Not all piping components are designated by nominal size, for example, steel tubes are designated and ordered by outside diameter and thickness.

Note 4 to entry: Nominal size cannot be subject to measurement and is not to be used for purposes of calculation. diaphragm pump See pump diaphragm valve

See valve diaphragm pump . See pump dip (of

lowest position of the barrier within any trap, which that enables a water seal to be formed disc clearance dimension dimension equivalent to the minimum internal diameter of the adjacent pipe or flange which will allow the disc to fully open without interference or damage to the disc sealing edge discharge capacity quantity of water discharged from a flushing cistern discharge pipe

See pipe disconnector gully

See gully displacement water heater

See water heater discharge pipe

See pipe disconnector gully

See gully displacement water heater

See water heater DN

See nominal size

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See grating domestic fixture or appliance

fixture or appliance that is designed for use in residential situations double air valve

See valve double bowl sink

See sink double check valve

See mechanical backflow prevention device double collar

See collar double socket

See socket double wall heat exchanger

See heat exchanger double Y junction

See junction

downpipe . pipe to carry roof water from gutters and roof catchments to drains or storage tanks downstream vent

See vent

drain ( line of pipes above or below ground level within the property boundary, including all fittings and equipment generally external to a building, intended to convey, under gravity, sewage or trade waste ‐ ‐ branch drain section of a drain that is intended to receive the discharge of fixture discharge pipes, but which has a lower fixture unit loading and which may be of smaller nominal size than the main drain at its point of connection

main drain

the main conduit of a drainage system to which branches are connected. Note 1 to entry: It is that portion of a sewerage service on private property that is normally located in the ground , and which conveys or is intended to convey the discharge from all fixtures to the sewer untrapped floor drain grated outlet to a pipe discharging to an outside location where it will not cause damage

drain tap See tap drainer

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See tap drench shower

See shower drink dispenser

appliance that makes or is used in dispensing drinks, which has a water supply or a waste connection, or both. It includes water that makes or dispenses drinks

EXAMPLE Water coolers, coffee making machines, cappuccino machines and other beverage dispensers. drinking fountain fixture that provides a low flow jet of water from which the user may drink directly, the supply being controlled by a hand operated or foot operated tap

Note 1 to entry: The supply of water is controlled by a hand operated or foot operated tap. ‐ ‐ drinking water ‐ ‐ water that is suitableintended primarily for human consumption, food preparation, utensil washing and oral hygiene (see AS/NZS 4020) but with other domestic uses drop junction

See jump ‐up dropper vertical or near vertical water supply or sanitary plumbing pipework . dry (road) service

property service installed beneath a roadway prior to the connection of the property to the water main

dry wall construction

wall built without mortar dry weather flow

the flow in a sewer or drain under normal operating conditions when infiltration is at a minimum dry well pump

See pump dual check valve

See backflow prevention device duct

enclosed area to accommodate pipework ductile mode failure of material where macroscopic plastic deformation occurs dye test

See test dynamic pressure

1 the pressure in pipework under flow conditions (also called flow pressure) 2 the pressure resulting from a change in velocity of the fluid stream (also called hydraulic shock — see water hammer) eccentric taper fitting

See fitting

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(a) the diameter of a circle; or (b) where the opening is not circular, the diameter of a circle of equivalent cross sectional area where the opening is not circular. ‐ effluent the liquid discharged from a wastewater treatment process egg‐shelling polygonal surface pattern on cement mortar lining resembling the crazing effect exhibited by eggshells with multiple fractures ejector pot the chamber of a compressed air sewage ejector tointo which sewage drains prior to being ejected by compressed air

elbow pipe fitting for providing a sharp change of direction in a pipeline elbow action tap

. See tap

electronic tap See sensor tap elevated temperature temperature greater than 20° C elevation head

See head end plug

See plug engineer

See professional engineer end stop mechanical device, integral to the gearbox, that is designed to prevent the valve disc travelling past the fully open or closed position entry at grade junction

See junction epoxy barrier coating system two part epoxy resin that is applied to a metallic substrate in order to form a protective barrier for limiting corrosion ‐ Note 1 to entry: Epoxy barrier coatings are prepared for application using mechanically engineered metering and mixing methods to ensure mixing and dispensing controls to manufacturers’ specifications. epoxy resin joint

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epoxy resin joint

See joint equilibrium float valve

See valve evaporative airconditionerair‐conditioner appliance intended to provide a flow of air that has been cooled by the evaporation of water

expansion expansion control valve See valve expansion coupling

See coupling expansion fitting

See fitting expansion joint

See joint

expansion loop .

loop in a pipeline, which, by flexing, can accommodate expansion and contraction movements due to temperature change

expansion vessel vessel designed to limit the pressure due to the expansion of heated water in an unvented heated water system without discharging the water to the atmosphere expansive soil

soil that undergoes volumetric changes due to variations in moisture content external stormwater drainage network drainage network that collects and conveys stormwater from individual properties EXAMPLE Easement or inter allotment drains, and street and trunk drainage systems. extruded ‐ general term to describe a component component (at or near finished shape,) produced by forcing itbeing forced from a closed container through a die of thean appropriate contour eye bath

See batheye wash fabricated fitting

See fitting fabricated assembly

assembly where two or more components are joined during the manufacturing process and intended as a permanent joint face‐to‐face dimension distance between the valve mating faces, measured along the valve axis

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the difference in level between two points in the opposite direction to the designed flow

falling level water heater See water heater feed pipe

See pipe ferrule

rigid metal sleeve, one end of which is for jointing to the end of a soft metal pipe, and the other end for insertion into a socket to enable a caulked joint to be made

ferrule key

See key ferrule tap

See tap

fill 1 backfill

process of replacing soil in a trench after completion of the related plumbing or drainage work . ordinary fill — Earth earth removed from the excavation or imported, used to refill a trench or form an embankment 2 selected fill — Specified specified material chosen for a particular application used to refill a trench or form an embankment

filter apparatus used for the separation ofto separate solids from liquids finishing collar

See collar fire drencher sprinkler system

heat activated fire suppression system, which that sprays water on the outside surface of a building or structure, to prevent the spread of fire from an adjacent burning building or structure ‐ fire hose reel

length of firefighting hose, which that is connected to a valved water supply and is wound on a reel

fire hydrant fitting installed in a water pipeline, which provides with a valved outlet (above or below ground),) to permitenable a controlled supply of water to be takendrawn from the pipeline for firefighting or street flushing fire plug

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Note 1 to entry: The valve is generally operated by means of the attachment of a standpipe.

fire hydrant cover See cover fire hydrant riser short pipe with flanged ends supplied in varied lengths so that a fire hydrant outlet can be located at a standard depth, irrespective of the depth of the water pipeline

fire hydrant standpipe . portable pipe fitting for connection to a fire hydrant, to operate the hydrant outlet valve and to provide a connection for hoses. It may incorporate a booster valve assembly, when necessary

Note 1 to entry: It may incorporate a booster valve assembly. fire plug See fire hydrant fire service service comprising water pipes, fire hydrants, fire hose reels, fittings, and including water storage or pumping facilities, which that is installed solely for firefighting and extinguishing purposes in and around a building or property . Under certain conditions part of a fire sprinkler system may be included services that can beNote 1 to entry: Under certain conditions, part of a fire sprinkler system may be included.

Note 2 to entry: Services used for other purposes are deemed to be water services. fire sprinkler service piping connected to a fire service designed to be kept charged with water under pressure and fitted with sprinklers that are automatically activated armpiece horizontal range or distribution pipe to which a maximum of two sprinklers are connected directly by a dropper, a candle stick, or a flexible tube assembly candle stick vertical range pipe to which upright sprinklers are directly fitted control assembly distribution main

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fitting item placed in a pipeline for jointing, connecting or changing the direction or internal diameter of the pipeline access fitting straight extension that incorporates a test or access opening end adaptor fitting

. <1 > fitting that allowsenables the connection of other fittings or components whose normal jointing methods do not allow interconnection

<2 > fitting that incorporates connection ends with different methods of jointing aerator junction fitting proprietary fitting connected to a reduced velocity aerated system to connect graded discharge pipes, common discharge pipes, or stacks ‐ angle of fitting in angle formed by the longitudinal axis of the fitting and the axis of the branch or a change in direction when a fitting is viewed with the spigot downstream with the inspection opening toward the observer , the angle

Note 1 to entry: The change in direction is that formed by the longitudinal axis of the fitting and the axis of the branch, or change in direction, read in a clockwise direction for right hand fittings and an anti clockwise direction for left hand fittings . ‐ ‐ blank end fitting ‐ fitting with a closure to close off a pipeline while allowing for future opening and attachment of additional pipe or fittings by removal of the closure capillary fitting any fitting in which the joint is made by the application of heat to cause the flow of filler metal by capillary action along the annular space, between the outside of the tube and the inside of the socket of the fitting compression fitting compression fittings and components are defined as follows: (a) nut fitting fitting used to make a watertight joint in which the end of a pipe is held by compression either on the outside of a pipe or against a manipulated end of a pipe COMMITTEE IN CONFIDENCE © Standards Australia Ltd Page 29 of 112 Last saved: 5/06/2020 9:03 AM 104855 AS NZS 3500.0 Redline.docx

Note 2 to entry: The joint may be olive, cone, flared or croxed type. Type 1 non ‐manipulative fitting fitting for a compression joint which does not require any working of the tube other than cutting square— a fitting for a compression joint which does not require any working of the tube other than cutting square.

Note 1 to entry: The joint is made tight by means of a loose compression ring which grips the outside wall of the tube when the coupling nut is tightened.

(b) Type 2 manipulative — a Note 2 to entry: Components of a Type 1 non manipulative fitting used to grip the outside wall of the pipe include a ring, cone, olive or sleeve. ‐ Type 2 manipulative fitting fitting in which the joint is made by flaring, croxing, capping or beading the end of the tube which is then compressed by the coupling nut against the shaped end of the corresponding section in the fitting .

the outside of the pipe. ‐ ‐ (d) Nut — a crimped fitting used to make a watertight joint, fitting in which the end of a pipe joint is heldmade by compression either of the fitting and/or a ring on the outside of a pipe or against a manipulated end of a pipe. The compressive effect is achieved by tightening the compression nut. The joint may be olive, cone, flared or croxed type. wall of the pipe by means of a special tool .

(e) Ring — that part of a non manipulative type compression fitting which is used to grip the

outside wall of the pipe. Sometimes referred to as a “sleeve”, “cone” or “olive”. ‐ ‐ (f) Olive — the loose ring component of a non manipulative type compression joint, which is

used to grip the outside of the pipe. ‐ ‐ cross‐fitting fitting having four connection ends all lying in the one plane and separated by 90°.° croxed fitting fitting in thatwhere the joint is made by forming a raised circular section close to the end of the tube, which is then compressed by the coupling nut against the shaped end of the corresponding section in the fitting eccentric taper fitting reducer that maintains level soffits in the adjoining graded pipes electrofusion fitting fitting in which the joint with the pipe is made by melting together the outer part of the pipe and the inner part of the fitting

Note 1 to entry: Joint is made by heat that is induced by current flowing in an appropriate resistor in the fitting body. expansion fitting coupling that permits longitudinal movement, due to temperature changes ofin the connected pipework fabricated fitting fitting constructed by joining together a number of components. The fitting when assembled is designed to suit a specific purpose

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Note 1 to entry: At least one of the two components normally incorporates a flat sealing surface. left‐ hand or right ‐hand fitting bend or junction such that, when the body of the fitting is viewed with the direction of flow downward and with the inspection or testing opening facing the observer, the socket of the bend or the branch of the junction projects to the left or right respectively plastic waste fitting fitting made from moulded or fabricated plastic material to convey liquid waste reducing fitting

See reducer slip fitting

fitting without tube stop shoulders andbut with a bore that allows easy installation into existing . pipework socket weld fitting fitting in which the joint with the pipe is made by melting together the other part of the pipe with the inner part of the fitting

Note 1 to entry: A heated tool is used to form the weld. swivel fitting coupling that permits angular movement between two components taper fitting

See reducer tee fitting

fitting junction with the branch entering the main pipe at 90°

fixed pipe clip See pipe clip

fixture receptacle with necessary appurtenancesfittings designed for a specific purpose, the use or operation of which results in a discharge into the sanitary plumbing or sanitary drainage installation soil fixture waterfixture used to discharge excrement and similar waste EXAMPLE Water closet pan, urinal, slop hopper, autopsy table, bedpan washer or, sanitary napkin disposal unit.

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See pipe fixture outlet

See outlet fixture pair

twopair of adjacent waste fixtures of the same type, which have with their outlets connected to the same fixture trap

fixture trap

See trap fixture unit

unit of measure, based on the rate of discharge, time of operation and frequency of use of a fixture, that expresses the hydraulic load imposed by that fixture on the sanitary plumbing installation

flange projecting flat rim or disc, with or without bolt holes, for attaching to or assembling on the end of the pipe, fitting or other component

blank flange

solid disc with bolt holes for bolting to a flange to blank off the outlet of a pipe, fitting or vessel insulating flange

. pair of mating flanges designed to break the electrical continuity between adjacent pipes, fittings or fixtures

loose flange

flange not initially fixed to a pipe or fitting but free to be rotated or moved longitudinally puddle (weep) flange weep flange flange on a pipe, at the point at which it will pass through a water retaining or watertight structure, to increase the resistance to leakage along the exterior of the pipe

flange backing ring full face ring used on the back of the flange face to reduce the bolt bearing load on soft flange materials such as aluminium or plastics ‐ flange joint

See joint flanged pipe pipe having a flange attached to one or both ends by welding, threaded connection or other suitable means flap valve

See valve flared joint

See joint flat offset

See offset flexible coupling

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hose intended for use between a pipework system and a fixture, fitting, valve, tap, appliance or similar, that is capable of being adapted or bent in any direction without damage

Note 1 to entry: The flexible hose assembly may consist of an inner liner and an outer reinforcement braid or sleeve with secured end connectors to ensure watertightness.

hose made from elastomeric or thermoplastic material in contact with a fluid flexible joint

See joint flexible mechanical joint

See joint flexible pipe

See pipe float

buoyant device (often spherical),) used to activate a mechanism by its response to a rise or fall of the surface of a fluid

float valve

See valve flood level rim

the lowest part of the top edge of any fixture from which water will spill when full floor grate . See grate floor level

when determining the height of a stack in floor levels, a floor level represents the vertical distance between two adjacent floor structures

Note 1 to entry: Floor level is used when determining the height of a stack. floor waste See waste floor waste gully

See gully flow controller device to regulate the flow rate so as to maintain a constant flow rate over a given range of pressures flow pressure

See pressure flush pipe

See pipe flush pipe connector

jointing device used to make a watertight seal between the flush pipe and the inlet of a sanitary fixture flush valve

See valve flusherette

See flush valve

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See cistern flushing surface

the internal surface of a soil fixture or urinal face/bowl below the inlet point or flushing rim wetted during the flushing operation

flushing tank

See tank flushometer

See valve‐flush valve food waste disposal unit

appliance being an electrically operated mechanical device for reducing kitchen food waste into fragments small enough to be flushed into the drainage system

foot action tap

See tap foot bath

See bath foot valve

See valve footpath tap

. See tap force pump

See pump forced circulation

circulated flow in any primary, secondary, or supplementary circuit created by the use of pumps or other mechanical means forged wrought product formed by hammering or pressing usually while hot between open dies (hand forged) or closed dies (drop or die forged)

foul water

any contaminated or non potabledrinkable water free acting ‐ valve without external influence on opening or closing the disc free‐end testing condition testing condition for a flanged pipe or fitting whereby the flanged end(s) under test are fitted with a blanking piece without external restraint

Note 1 to entry: The arrangement of the seal between the flange and the blanking piece is designed to result in a load transfer equivalent to that intended to be used on site, i.e. raised face flanges. free outlet water heater See water heater freestanding pump

See pump free water outlet

See outlet

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See outlet fresh sewage

See sewage friction locked joint

See joint friction loss head

See head frost heave

the arching of soil due to the freezing of in ground water or moisture fuel gas ‐ fuel that is supplied through pipes or in containers and is a gas at a temperature of +15 °C and an absolute pressure of 101.325 kPa full way valve

See valve fully vented modified system

system of sanitary plumbing differing from a fully vented system, in thatwhere the traps of any group of two or more fixtures, or floor waste gullies, discharging to the same branch pipe, are vented in common by one or more group vents

. fully vented system

system of sanitary plumbing with provision for the separate ventilation of every fixture trap connected (other than fixtures discharging to a floor waste gully) and of the trap of every floor waste gully

fusible plug

See plug fusion welded joint

See joint galvanic corrosion

type of corrosion that occurs when two dissimilar metals are in intimate contact in a moist environment. Corrosion of the more reactive metal is accelerated by the presence of the less reactive metal

Note 1 to entry: Corrosion of more reactive metal is accelerated by the presence of less reactive metal. gasket piece of deformable material, often preformed, used to make a watertight and airtight joint between two mating surfaces

gate valve

See valve geotextile (fabric) any permeable textile materialfabric used with foundations, soil, rock, earth, or any other geotechnical engineering related material used as an integral part of a project

gibault coupling ‐ See coupling gibault joint

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material inserted into the stuffing box to prevent leakage of fluid gland sleeve

sleeve with flanged upper edge or retention shoulder, which may be tightened down onto a packed gland

gland stuffing box

the annular space within the body of a component around a stem, spindle, shaft or housing, to contain the gland packing

glass washing machine machine designed to wash and rinse glasses globe valve

See valve grade (or gradient) the inclination expressed as the ratio or percentage of unit rise to horizontal distance graded jump‐up .

See jump‐up graded offset

See offset graded pipe

See pipe gradient

See grade

grate sanitary or stormwater fitting consisting of a frame holding a grating floor grate

grate fitted to a sanitary or stormwater fitting positioned within a graded floor outlet grate removable raised grating to prevent entry of foreign solids into the waste pipe

grating framework of parallel or crossed bars or a plate having holes or slots to prevent ingress of large solids domed grating grating with a convex upper surface

gravity main

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See arrestor grease trap

See arrestor ground level the surface of the earth at a site ground vent

See vent ground water

water occurring naturally in the subsoil group vent

See vent

gully assembly used in a wastewater system, which that provides a water seal to prevent odours and gases from escaping into a building or into the atmosphere in the proximity of the assembly

disconnector gully

DG gully for use with a riser pipe and inlet fitting, to provide disconnection by means of a water seal between waste discharges and the remainder of the sewerage system . floor waste gully

FWG disconnector gully for installationinstalled inside a building, for use with a floor grating or waste outlet fitting on a riser pipe and with provision, where required, for connection of waste pipes for fixtures overflow (relief) gully

ORG self cleansing trap, provided with a suitable loosely fitted grating located above ground surface level, provided for the relief of any possible surcharge and to provideas a measure of protection against‐ overflow from a drain

gully riser pipe extending from a gully gunmetal

copper based alloy containing additions of tin and zinc, which may also contain lead (leaded gunmetal) ‐ gutter box gutter graded channel (generally of rectangular shape) located within the building to convey rainwater Note 1 to entry: The box gutter may include a gutter adjacent to a wall or parapet. eaves gutter

DRAFTING NOTE: We are requesting a suitable definition

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DRAFTING NOTE: We are requesting a suitable definition

hardness of water that property of water which resists the lathering of soap. It Note 1 to entry: Water hardness is caused by certain mineral salts, principally calcium and magnesium, dissolved in the water. It can be expressed chemically as the concentration of calcium carbonate in milligrams per litre of solution . permanent hardness that part of hardness of water which attributable to presence of mineral salts that cannot be removed by boiling.

Note 1 to entry: It is caused largely by the presence of calcium and magnesium sulphates and chlorides. temporary hardness that part of the hardness of water which that can be removed by boiling. Note 1 to entry: It is caused largely by the presence of calcium and magnesium bicarbonates, which, at high temperatures, are converted to insoluble carbonates at high temperatures. total hardness the combination of the temporary and permanent hardness

head . the total energy possessed by a unit weight of fluid due to its elevation, pressure, and velocity. Note 1 to entry: It is expressed as a height in metres of fluid. elevation head the head possessed by a fluid due to its elevation and expressed as a height of fluid above a datum friction loss head

the loss of head in a fluid moving through a conduit, caused by shear between the Note 1 to entry: The energy lost due to the fluid viscosity, the flow regime, i.e. laminar or turbulent, the length of the pipe, surface roughness and conduit wallfunction of fittings, valves and turbulence within the fluidother system structures.

DRAFTING NOTE We are seeking responses to the inclusion of this note. maximum head the maximum working water pressure to which a product is to be subjected, Note 1 to entry: This is expressed in metres of water or kilopascals. pressure head the head possessed by a fluid due to its pressure P.

Note 1 to entry: It is expressed as a height Hp and calculated using the equation —

P H  p g where ρ = density and g = gravitational acceleration. static head

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Note 1 to entry: It is expressed as height (Hv) and calculated using the equation —

2 v  2/ gVH where

g = gravitational acceleration. V = velocity working head the pressure head at whichthat a component, (e.g.,. fitting,) is designed to operate at, or is subject to, induring service

head loss the difference in head in a fluid between two points header vent

See vent heat exchange solar water heater

See solar water heater . heat exchange water heater

See water heater

heat exchanger apparatus for transferring heat from a heat source to water contained within a coil or storage cylinder (see also calorifier.)

See also calorifier double wall heat exchanger

type of heat exchanger in which two distinct and separate walls separate the potabledrinkable water andfrom the heat transfer fluid single wall heat exchanger type of heat exchanger in which only one wall separates the potabledrinkable water andfrom the heat transfer fluid

‐ heated water hot water warm water water that has been intentionally heated heated water reticulation parts of the installation, including equipment and materials necessary to provide a supply of heated water at the specified outlets

Note 1 to entry: This excludes the water heater. heated water service COMMITTEE IN CONFIDENCE © Standards Australia Ltd Page 39 of 112 Last saved: 5/06/2020 9:03 AM 104855 AS NZS 3500.0 Redline.docx

water service in which the water supplied to the draw off points is heated by a calorifier ‐ heat transfer medium medium, including all additives present under operating conditions, used to transfer thermal energy heated water water that has been intentionally heated. It is sometimes referred to as hot water or warm water height of stack (in floor levels) the number of floor levels through which the stack passes, counted from the base of the stack up to, but not including, the floor level on which the highest fixture is connected. Where the distance between the base of the stack and the lowest floor exceeds 2.4 m, this interval shall be counted as an additional floor level hexagon nipple

See nipple high‐capacity overflow device overflow device associated with an internal box gutter and sump high level vent

. See vent hoop stress stress in a pipe under pressure acting tangentially to the perimeter of a transverse section horizontal branch that part of a soil pipe or waste pipe, extending laterally from a soil stack or waste stack, (with or without vertical sectionsections or branches, which receives), receiving the discharge from one or more waste pipes or soil pipes , and conducts conducting it to the soil stack or waste stack horizontal stub pan connector fitting designed as an adaptor for use with one or more matched WC pans Note 1 to entry: It connects directly to the integral spigot end of the pan to enable the pan to be used in S trap, P trap and side inlet situations. ‐ hose assembly‐ assembly that is capable of being flexed or bent in a specified direction without damage and is intended for use as part of a pipework system to connect a fixture, fitting, valve, appliance or similar equipment

Note 1 to entry: The hose assembly may consist of an inner and an outer reinforcement braid or sleeve with secured end fittings to ensure watertightness. hose connected spraying apparatus See spraying apparatus hose connection vacuum breaker

See backflow prevention devices hose tap

See tap hose tap coupling

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See sink hot discharge

discharge having a temperature of 40 °C or higher hot poured joint

See joint hot pressed

See forged heated water reticulation other than the actual water heater, all parts of the installation and all equipment and materials necessary to provide a supply of hot water at the specified outlets heated water service all parts of the installation including the water heater and all equipment and materials necessary to provide a supply of hot water at the specified outlets

(a) Direct system — a heated water service in which the water supplied to the draw off points is

heated by a primary source of heat such as solid fuel, gas, electricity or oil. ‐ (b) Indirect system — a heated water service in which the water supplied to the draw off points

is heated by means of a calorifier. ‐ hot‐dip coating process used for providing protectionto protect against corrosion in which articles are dipped into the molten coating material and, on withdrawal, are allowed to drain and cool with . consequential solidification of the protective coating

hot‐dip galvanizing

process by which a piece of iron or steel is immersed for a short period in molten zinc for the purpose of applying a zinc coating to provide protection against corrosion while in service

heated water supply temperature differential differential of the supply temperature of the heated water above the set temperature of the valve that is required for efficient operation household water heater

See water heater hydraulic gradient

The loss of head in liquid flowing in a pipe or channel, under steady conditions Note 1 to entry: This is expressed in unit head loss per unit length of the pipe or channel under steady conditions. .

Note 2 to entry: In a channel this, hydraulic gradient is equal to the slope of the free surface of the flowing liquid. hydraulic ram See pump hydrostatic design stress estimated hoop stress due to internal hydrostatic pressure that can be applied continuously at a specified temperature with a high degree of certainty that failure will not occur

Note 1 to entry: Estimated hoop stress is obtained by the application of a safety factor to the extrapolated 50 year long term hydrostatic stress value. hydrostatic‐ ‐ test

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appliance with a water connection that manufactures ice. It has a water connection and Note 1 to entry: It may have a connection to the drainage system.

Note 2 to entry: Refrigerators that contain an ice making unit as a component are not included. in the field phrase used to describe plumbing operations that are performed under site conditions on the job rather than under the more controlled environment of a workshop or factory

inert catchment rainwater collection area whose dominant material has little or no effect on the chemical composition of rainwater draining from it

Note 1 to entry: Dominant materials include acrylic, fibreglass, aluminium/zinc and aluminium/zinc/ magnesium alloy coated steel, glass, glazed tiles, unplasticized polyvinyl chloride and prepainted metal. inline booster ‐ water heater installed downstream of a solar preheater to enable the water temperature to be boosted before the water is delivered into the heated water pipework in‐line tap

See tap inclined jump‐up

See jump ‐up induced siphonage

. the loss of water from a trap by siphonage caused by a reduction in pressure at the outlet of the trap induct vent

See vent infiltration

the unintended ingress of water into a drainage system inflow

See infiltration inlet pit

chamber with an inlet, which may be side entry, grate or combination, that permits the entry of stormwater to a stormwater drain and allows access to the drain for maintenance purposes

Note 1 to entry: The inlet may be side entry, grate or combination. input stop adjustable mechanical device, independent of the gearbox (located between the input spindle and the gearbox), designed and set to prevent the transmission of excessive input torque to the gearbox when the valve is in the fully open or closed positions insertion depth entry depth required distance past the seal that a pipe is inserted into a socket to provide satisfactory sealing inset sink

See sink inside wall thickness thickness of the wall section in direct contact with the medium being transported insolation

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removable airtight cap fitted over a boundary trap riser, or inspection shaft inspection chamber

See chamber inspection junction

See junction inspection opening (IO)

IO access opening in a pipe or pipe fitting, arranged to facilitate inspection testing or the clearing of obstructions, and fitted with a threaded cap or plug or an access cover inspection opening bend

See bend inspection opening cover

See cover inspection shaft

IS shaft constructed in the line of a sanitary drain for the purpose of inspection and future access for locatingto locate and clearingclear the drain installation the construction or network of pipework and fixtures in position for service and use. installer temperature adjustment . adjustment of the offset between set temperature and the outlet temperature by the installer Note 1 to entry: The network of pipework and fixturespurpose of this adjustment is to allow an installer, during commissioning, to increase the outlet temperature to compensate for temperature losses in the pipework between the outlet of the appliance and sanitary fixtures. instantaneous water heater See water heater insulating coupling

See coupling insulating flange

See flange insulating joint

See joint integral trap

See trap integral unit solar water heater

See solar water heater Interconnection (interconnection

connection of two or more water systems interface pressure pressure at the pressure at the surface separating two components of a joint, e.g., a rubbersurface separating two components of a joint

EXAMPLE Rubber ring and the, pipe socket.

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the diameter of waterway through a pipe, tube, tap, valve or other fitting invert the lowest point of the internal surface of a pipe or, channel or fitting at any cross section invert level ‐ the level of the lowest point of the internal surface of a pipe or channel at any cross section irrigation ‐ the distribution of water for such purposes as growth, leaching, cooling, treating, humidifying, frost protection and water replenishment of the soil for plants, turf, lawns, gardens, nurseries and agriculture island sink

See sink isolating tap

See tap isolating valve

See valve jack pump

See pump jet (ejector) pump

. See pump

joint the result of a joining together of two or more parts of a construction autogenous welded joint welded joint in which two parts made of the same metal are welded together, with or without the use of a filler rod of the same metal

ball joint

joint in which the two parts that are joined are shaped so as to be in contact over part of the surface of a sphere and arranged so that within certain limits the axis of each part can be set in any desired plane and at any desired angle, one to the other banded clamp sleeve joint band clamped over two spigot end pipes to form a watertight seal belled end joint expanded or formed end on a length of pipe in the shape of a bell on a length of pipe, to facilitate the making of a fillet welded joint.

Note 1 to entry: The bell shape allows for variations in angular alignment. bolted gland joint mechanical joint for pipes and fittings in which a gland ring is used to compress a rubber gasket or other material brazed joint joint in which the parts are united by a molten brazing alloy bronze welded joint

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Note 1 to entry: The alloy melts at a temperature below the melting point of the parts being joined. capillary joint joint in which the parts are united by the flow of filler metal by capillary action along the annular space between the outside of a tube and the inside of a pipe socket or capillary fitting caulked joint spigot and socket joint in which the jointing material is compacted by means of a caulking tool and hammer cement mortar joint spigot and socket joint for pipes in which the jointing material used is cement mortar compression joint joint made by fittings in which the end of the pipe is held by compression with one of the following:

1(a)Cone, loose ring or olive onto the outside wall of the tube.

2(b) By the deformation of the end of a tube against the body of a fitting, or a loose ring or

olive. crimp joint joint made using an internal insert fitting and an external crimp ring, which is compressed with a calibrated crimp tool or other suitable tool croxed joint joint made by fittings in which the end of the pipe has a raised circular section to seal against the . olive epoxy resin joint joint in which the parts are united using an epoxy resin adhesive expansion joint joint that permits longitudinal relative movement of the jointed parts caused by expansion and contraction due to temperature change flange joint joint made by the connection of two flanges by bolts or studs and nuts flared joint pipe joint made by increasing the diameter of one pipe towards the end to enable insertion of the other pipe flexible joint

1 joint that permits somepermitting movement, expansion, contraction and rotation Note 1 to entry: Movement includes axial rotation of the jointed parts outpipes or fittings with sufficient degrees of their original alignment freedom to accommodate any anticipated ground movements (or movements of the supporting structure), which result in the ability to telescope and/or articulate (or swivel) and/or axially rotate as a response to differential ground movements.

2 joint that permits the jointing of parts that are not truly aligned flexible mechanical joint joint that permits deflection of the jointed pipes or fittings and includes elastomeric joint seal(s) Note 1 to entry: The seal or seals may be housed in either —

(a) an integrally manufactured socket — socket type; or (b) a separately manufactured sleeve — sleeve type. COMMITTEE IN CONFIDENCE © Standards Australia Ltd Page 45 of 112 Last saved: 5/06/2020 9:03 AM 104855 AS NZS 3500.0 Redline.docx

<1 > butt or, spigot and socket joint made on certain types of plastics piping, (e.g., polyethylene,) in which the surfaces that are to be in contact are fused together.

Note 1 to entry: Two methods may be used. TheEither the assembled joint may be heated and fused, or the components may be heated separately and while still hot brought together to become fused together.

<2 > joint made between metals in a molten state , without the application of pressure gibault joint device used for jointing pipes using rubber O rings compressed to a sleeve by bolted slip flanges hot poured joint ‐ pipe connection between spigot and socket of vitrified clay, concrete or cast iron pipes made by pouring a molten compound into the joint ‐ insulating joint joint or fitting designed to break the electrical continuity between adjacent pipes, fittings or fixtures interference fit joint (solvent cement) sliding solvent cement spigot and socket joint between plastics pipes and fittings, in which the external diameter of the spigot contacts the internal diameter of the slightly tapered socket within a specified distance, to the extent that some longitudinal force is required to make the joint

Note 1 to entry: The joint is made with solvent cement. . mine subsidence joint spigot and socket joint designed to permit axial movement in pipework where ground subsidence may take place rolled grooved joint joint made using a coupling and a groove that is rolled formed in the pipe (not cut) rubber ring joint spigot and socket joint incorporating a contoured rubber toroid that is compressed to effect a seal silver ‐brazed joint joint in which the parts are united using a silver brazing alloy soldered joint joint in which the metal parts are united with molten solder solvent cemented joint spigot and socket joint made on certain types of plastics piping, (e.g.,. UPVC,) in which the contact surfaces are both coated with solvent cement, and joined by pressing the softened surfaces together spigot and socket joint joint for pipes in which the plain end, or (spigot,) of one section is inserted into the enlarged end or (socket) formed on the next section swivel joint joint design that allows movement in a rotating plane and includes a positive stop threaded joint joint between two concentric cylindrical or slightly tapered surfaces upon which have been formed matching screw threads. The joint is made by engaging the thread and rotating one or both parts

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Note 2 to entry: Threads may be either — (a) sealing threads in which casewhere the joint is made pressure tight by the mating of the threads; or

(b) fastening threads in whichwhere the sealing, if necessary, is effected by gaskets or O rings. union ‐ fitting for connecting or disconnecting two pipes welded joint joint between materials (usually metal or plastic), the faces of which are rendered either plastic or liquid, bonded together by heat or by pressure or both when it is being formedduring formation

joint deflection maximum angle (of deviation) between two adjoining pipes given by the manufacturer as being achievable without loss of joint integrity for an appropriate service condition joint gasket annular gasket used between the two flanges of a flanged joint joint ring ring of rubber or similar compressible material used as the jointing medium in a flexible joint or an expansion joint jointing product

. material used for creating a watertight joint between two mating surfaces jointing adhesive

compound applied between two surfaces for the purpose of adhering one surface to the other jointing cleaner

compound used to clean mating surfaces prior to their bonding or jointing jointing compound

material for use in making a joint jointing expansion ring

preformed ring made of an elastomeric material for use in making a fluid tight joint designed to allow expansion contraction movement ‐ jointing primer ‐ compound used to prepare mating surfaces prior to their bonding or jointing jointing ringsealant

1 annular gasket (joint gasket) used between the two flanges of a flanged joint 2 ring of rubber (joint ring), or of similar compressible material, used as the jointing medium in a flexible joint or an expansion joint jointing sealant material or compound used to make a fluid tight joint between two mating surfaces. Note 1 to entry: The sealant may be of a permanently flexible or rigid setting type, e.g., silicone ‐ EXAMPLE Silicone , epoxy resin, putty, PTFE tape. ‐ jointing sealing ring preformed ring made of an elastomeric material for use in making a fluid tight joint between two mating, normally circular, surfaces ‐ COMMITTEE IN CONFIDENCE © Standards Australia Ltd Page 47 of 112 Last saved: 5/06/2020 9:03 AM 104855 AS NZS 3500.0 Redline.docx

> inclined section of a sanitary drain joining two drains at different levels jumper valve

See valve

junction sanitary fitting used to connect a branch pipe or channel to a main pipe or channel 45° junction

Y junction junction where the branch pipe enters the main pipe at an upstream angle of 45° double Y junction

junction where two opposed discharges enter a main pipe at upstream angles of 45° drop junction

See jump‐up entry at grade junction

junction between a graded branch pipe and a stack inspection junction

junction entering the main pipe at grade and fitted with an airtight removable cap . square junction

junction where the branch pipe enters the main pipe at 88° to 90° sweep junction

short length of pipe with a socketed branch at approximately 45,° and with a socket set at 90° to the pipe centre line swept junction ‐ long radius bend entering a main pipe at 45° or a 45° junction fitted with a 45° bend throat radius junction ‐ short radius bend entering a main pipe at 45° with a throat radius of half the diameter of the branch pipe

Y junction See 45° junction junction opening sanitary junction that incorporates an inspection, test or access opening

key tool to enable a person to operate a valve, tap or locking device, or to lift a guard or cover ferrule key

tool for operating the valve of a screw down ferrule lifting key ‐ tool for lifting the cover of a surface box or inspection chamber locking key

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tool for operating a valve

kinetic air valve See valve

laboratory sink See sink lagged pipe

See pipe latitude angle

See solar water heater — terms laundry trough

See trough lead‐free solder

See solder level control valve

See valve . level invert taper

See eccentric taper fitting lever handled tap

See tap licensee holder of a current relevant lining protective material applied to the internal surface of a pipe or fitting linkages components forming part of the operating mechanism of the cistern class of licence, issued by the appropriate authority, for the work required lifting key

See key loading unit

weighted factor, applied to a fixture or appliance, used for the estimation of simultaneous water usage rates which takes into account the flow rate, length of time in use and frequency of use

Note 1 to entry: The estimation takes into account the flow rate, length of time in use and frequency of use. local annealing softening of a pipe over a limited length as a result of heating. This may occur during brazing or soldering of a joint local authority See regulatory authority locking key

See key

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See tap long bend

See bend long engagement socket

See socket longscrew

fitting, being a piecesection of tube threaded externally at each end. to join two pieces of tube neither of which can be rotated

Note 1 to entry: The thread at one end is sufficiently long to accommodate both a backnut and the full length of a threaded socket. It long ‐term hydrostatic stress continuously applied hoop stress that is used to join together two pieces of tube neither of which can be rotatedestimated will cause failure at a specified time and temperature loose coupling nut nut retained to the fitting by means of a shoulder and capable of turning relative to the fitting loose flange

See flange loose socket .

See socket low‐flow bypass auxiliary valve, operated hydraulically and installed in parallel with the main valve, used to provide stable control under low flow condition low level vent

See vent macerator pump

See pump

main the main pipeline of a system gravity main main through which water, sewage or stormwater flows under the influence of gravity reticulation main

network of pipes to which service pipes of individual properties are connected rising main

main through which water or sewage is pumped at pressure stormwater main

the conduits including stormwater pits, vested in a regulatory authority, for the conveyance of stormwater

Note 1 to entry: Control of the stormwater main is vested in the network utility operator. trunk water main

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Note 1 to entry: Control of the trunk main is vested in the network utility operator. water main conduit or pipeline vested in the water authority, or controlled and maintained by a network utility operator and constructed to convey potable water supplied by that authority

Note 1 to entry: Control of the water main is vested in the network utility operator.

main tap See tap mains pressure water heater

See water heater maintenance shaft shaft consisting of a chamber and riser with ends suitable for connection to a sewerage system and sealing of the riser

Note 1 to entry: A maintenance shaft —

(a) permits maintenance of sewers by operators working from the surface using commonly used maintenance and inspection equipment;

(b) permits condition assessment of sewers; and (c) does not permit persons to enter the sewer through the riser, which is limited to a maximum internal diameter of 300 mm. . maintenance shaft chamber shaft chamber comprising a chamber floor, walls and soffit Note 1 to entry: The chamber floor may contain a formed, graded channel for the passage of sewage. makeup water <1 > water added to a system of pipes or drains during a pressure test or operation to replace water losses due to leakage, absorption or operation

<2 > water added to a static storage tank in an evaporative cooler to replenish the regular draw off in order to maintain the working volume

manifold ‐ manifold pipe assembly comprising headers and branch pipes for interconnecting a number of appliances so as to combine their output manual cistern

See flushing cistern manual override valve auxiliary valve operated manually to open or close the main valve while the main valve is operating in automatic mode manufacturer’s recommended commissioning temperature temperature to which the tempering valve is set and checked following its installation within the limits specified by the manufacturer manufacturer’s recommended maximum supply temperature maximum hot water supply temperature that the primary temperature control valve can accept continuously without permanent damage manufacturer’s specification

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(a) the original manufacturer in the case of a new valve; or (b) the manufacturer in the case of a remanufactured valve whose specifications supersede the original valve’s specifications. manufacturer’s specified temperature settings maximum and minimum outlet temperatures to which the primary temperature control valve can be set, as specified by the manufacturer marked water level the static level of water in a cistern when filled to its effective capacity matched performance set

Water Closet (WC) pan, matching cistern or flush valve combination and sewer dosing unit that are compatible matched performance vacuum set vacuum water closet pan or single stall wall hung vacuum urinal and matching vacuum interface or rinse valve combination that are compatible ‐ maximum allowable gearbox input torque maximum allowable input torque that can be applied to a gearbox so that the output torque does not exceed the minimum strength test torque maximum differential displacement relative transverse displacement between the spigot and socket surfaces at one point maximum functional test torque . maximum allowable torque to operate an ungeared gate valve at fully unbalanced allowable operating pressure (AOP) maximum head

See head maximum working pressure the maximum pressure that can be sustained with a factor of safety, by the type and class of pipe or fitting for its estimated useful life under the anticipated working conditions

mean diameter

half the sum of two diameters at right angles to each other on one cross section mean outside diameter ‐ arithmetical mean of the maximum and minimum outside diameters measured at any one cross section of the tube ‐ mechanical mixing valve

See valve mechanical ventilation movement of air by mechanical means using fans and associated drive and control gear meter

apparatus for measuring or recording the flow of water meter assembly

apparatus consisting of water meter, stop valve, strainer, additional valves (if fitted) and unions required to connect these components together and to the water supply pipework

meter box

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meter tap

See tap mine subsidence joint

See joint minimum strength test torque maximum input torque that an ungeared sluice or gate valve is designed to withstand minimum wall thickness eᵧ min minimum permissible value of the wall thickness (e ) at any point around the circumference of the pipe ᵧ mirror test

See test misalignment condition in which two points, intended to be connected, will not mate due to being out of alignment with each other mixing tap

See tap mixing valve

See valve mortar . cement mortar consisting of cement, aggregates and water moulded fittings fitting manufactured entirely by injection moulding moulded thread

thread formed during manufacture of a moulded pipe or fitting

movable dwelling relocatable or registrable or unregistrable dwelling relocated by a prime mover near wall any wall or part of a fixture or receptacle which, measured horizontally from the inside edge of the water supply outlet, is —

(a) in the case of a single near wall, within a distance equal to three times the diameter of the

effective opening; or

(b) in the case of two intersecting walls, within a distance equal to four times the diameter of the

effective opening from each wall. network utility operator person who — (a) undertakes the piped distribution of drinking and/or non drinkingwater for supply; or

(b) is the operator of a sewerage system or a stormwater drainage system. ‐ neutralizer

1 device for neutralizing acids or alkalis in wastewater prior to entering drains

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nipple short tube having an external thread at each end barrel nipple nipple having an external tapered thread at each end and an unthreaded section in the centre of the length close taper nipple nipple having an external tapered thread at each end and meeting at the centre of the length hexagon nipple short straight pipe fitting having an external tapered thread at each end with a raised hexagon centrally situated between the two threaded ends for wrenching purposes

nominal discharge capacity the discharge capacity of a pipe fitting or fixture nominal flow rate flow rate from the mean of flow rate averages delivered over a range of prescribed pressures Note 1 to entry: Flow rate is expressed in litres per minute. nominal pressure nominal pressure (PN) alphanumeric designation, for reference purposes, related to the mechanical characteristics of a . component of a pipework system

Note 1 to entry: Nominal pressure is designated by the letters PN following by the appropriate reference number as specified in the relevant pipework component standard. The designation PN is not meaningful unless it is related to the relevant component standard number.

Note 2 to entry: The number following the PN designation does not represent a measurable value and, therefore, should never be used in calculations nor be followed by a unit.

Note 3 to entry: The maximum allowable working pressure of a pipework component depends on the material of the component, its design and working temperatures, and is given in tables of pressure/temperature ratings specified in the appropriate Standards.

PN See pressure nominal size (DN) numerical designation of size, which is common to all components in a piping system other than components designated by outside diameters or by thread size. It is a convenient round number for reference purposes and is only loosely related to manufacturing dimensions

Note 1 to entry: Nominal size is designated by DN followed by a number.

Note 2 to entry: Not all piping components are designated by nominal size, for example, steel tubes are designated and ordered by outside diameter and thickness.

Note 3 to entry: The nominal size (DN) cannot be subject to measurement and is not to be used for purposes of calculation.

See diameter nominal nominal working pressure

See pressure nominated maximum delivery temperature

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any water other than drinking water non‐ferrous metal metal or metal alloy in which iron is not the major constituent non‐potable water

See non‐drinking water non‐return valve

See valve non‐rising spindle design valve design where the gate is attached to the spindle with a threaded nut so that the spindle does not rise as the gate moves from closed to open position non‐toxic any substance which would not normally have detrimental health effects if consumed notch sensitive

susceptibility to fracture, due to the presence of a surface discontinuity such as a notch, a crack or scratch, or a sudden change in section

obvert

See soffit . O‐ring sealing ring circular in shape, generally of natural or synthetic rubber obvert

See soffit

offset the pipe and fittings used to provide continuity between pipes whose axes are parallel but not in line flat offset obsolete term. Use graded offset graded offset

stack offset, which changes direction at an angle less than 45° from the horizontal steep offset

stack offset, which changes direction at an angle of 45° or more from the horizontal

on‐site stormwater detention OSD device for the temporary storage of stormwater, above or below ground, to reduce the peak flow to the stormwater drainage network off‐take clamp clamp with an integral off take in flange, nipple or socket design which retains the integrity of the clamp seal ‐ open air

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See outlet operating mechanism device (diaphragm or piston) that translates the change in operating pressure in the valve cover chamber to the motion of the seal disc orifice plate

See restrictor outfall that part of the disposal system receiving surface water or sewage (foul) water from the drainage system

outlet <1> opening or passage for water or waste exits <2> portion of the tap assembly after the shut off device where water flows for its intended use fixture outlet ‐ opening in a fixture, appliance or vessel serving to discharge the contents free water outlet

unrestricted outlet where water can freely discharge

open outlet .

outlet that discharges water to atmosphere and is not intended to withstand a static water pressure

spray outlet

fitting incorporating a perforated plate, which is attached to the outlet of a tap, mixing valve or pipe and which causescausing water passing through it to break up into a spray waste outlet outlet pipe (with or without overflow ports) with a top flange and grating

outlet connection connection made at the outlet of an appliance, fixture or fitting ovality difference between the maximum outside diameter and the minimum outside diameter measured on one cross section of the tube

‐ overflow <1 > flow from an overfilled vessel, sanitary appliance, or chamber <2 that> part of a sanitary drain vessel, sanitary appliance, or chamber through which overflow is intended to take place

<3 the> level of the rim of a fixture or the invert level of an overflow pipe standing overflow overflow pipe, consisting of a vertical tube, standing in a vessel and passing through its base

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the level at which liquid in a vessel will first start to overflow, either through the overflow pipe, if any, or over the top edge

overflow (measure measure to divert water from flowing back into a building from a blockage anywhere along or at the outlet of an eaves gutter overflow pipe

See pipe overflow relief) gully

See gully overflow pipe

See pipe overland flow water running across the land after rainfall that cannot enter the stormwater drainage system due to blockage or rainfall exceeding the design intensity of the drainage system own re‐processable material material prepared from rejected unused pipes, fittings and valves, including trimmings from the production of pipes, fittings, or valves that will be reprocessed in a manufacturers plant after having been previously processed by the same manufacturer by a process such as moulding or extrusion and for which the complete formulation or material specification is known .

P‐trap See trap P‐trap (universal)

See trap pan bend

See bend

pan connector <1 > short straight soil pipe with a socket at one end to receive the outlet spigot of a WC pan or soil fixture

<2 > plastics or rubber fitting for connecting a WC pan or soil fixture to a soil pipe matching stub‐pan connector adaptor for use with one or more matched pans and connected directly to the integral spigot end of the pan so that it can be used in S trap, P trap or side outlet situation offset pan connector ‐ ‐ pan connector with an offset angle greater than 30° to the vertical to allow WC pan fit adjustments

pan extension soil pipe fitting comprising a straight section, terminating in a socket to receive the outlet spigot of a P or S trap WC pan or soil fixture

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the maximum rate of a fluctuating flow pedestal water closet pan

See water closet pan peeler (fruit or vegetable) appliance designed to abrade the surface of fruit or vegetables and to discharge the abrasions through a peel trap for the retention of larger particles

perforated pipe

See pipe performance test

See test permanent ponding ponding along the sole of eaves and box gutters when free water is evident for more than three days after the cessation of flow pH measure of the acidity or alkalinity of a liquid. Note 1 to entry: The pH scale extends from 0 (very acid) to 14 (very alkaline) with neutral solution having a value of 7. photographic processor appliance that may be used to retain chemicals and water for the processing of photographs and . similar

pillar hydrant

See fire hydrant pillar tap

See tap

pipe single length of tube, usually of circular cross section, used for the conveyance of fluids access pipe ‐ pipe provided with an opening and a removable cover, for inspection and maintenance branch pipe common discharge pipe to which plumbing fixture traps at any one floor level are connected charge pipe

small diameter pipe for maintaining the water seal in a floor waste gully circulation pipe

pipe forming part of the primary or secondary circuit, which that allows water to circulate within a water supply system

co‐extruded pipes pipe comprising two or more layers, where the layers are bonded simultaneously in a die head as part of the extrusion process jacketed pipes co extruded pipe with an external layer used for identification or other specialised purpose EXAMPLE Abrasion resistance, UV protection. ‐ COMMITTEE IN CONFIDENCE

common discharge pipe

graded pipe to which more than one fixture discharge pipe is connected discharge pipe

pipe for carrying sewage and wastewater from any fixture, appliance or floor waste gully to a stack or a drain

feed pipe

pipe conveying cold water to a hot water heating apparatus fixture discharge pipe the discharge pipe from a single fixture trap or from a floor waste gully, but not any of the pipes leading to the gully

flexible pipe

non pressure pipe with a relatively thin, flexible wall, which that requires special side support when installed in below ground drains ‐ flush pipe ‐ pipe connecting a cistern or flush valve to the inlet of a sanitary fixture or to the sparge pipes of a urinal

graded pipe

pipe installed on a grade less than 45° from the horizontal

lagged pipe .

pipe surrounded with thermal insulation multilayer pipe pipe comprising different stress designed layers overflow pipe ‐ pipe connected to a vessel, sanitary appliance, drain, tank, or chamber, to discharge excess liquid parallel pipe

pipe system that generally uses a dedicated pipe to supply hotheated or cold water to each fixture or appliance perforated pipe pipe with perforations in the side to allow the absorption of ground water in subsoil drainage pipe interrupter pipe through which water flows and into which air can enter through an annular aperture or through several holes or slits (air inlet apertures) pressure pipe pipe designed to withstand an internal fluid pressure primary circuit flow and return pipe

pipes that respectively convey water from the source of heat to the storage vessel, and from the storage vessel back to the source of heat

return pipe

pipe in a primary hotheated water system, in which water moves back to the boiler, or a pipe in a secondary hotheated water system in which water moves back to the hotheated water storage vessel rigid pipe

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pipes that respectively convey hotheated water from and return it to the storage vessel, and from which hotheated water may be drawn off sewer pipe non pressure pipe for the conveyance of sewage soil pipe ‐ pipe that conveys the discharges from one or more soil fixtures and may also carry discharges from waste fixtures

soil, waste and vent pipe

SWV non pressure pipe for the conveyance of soil or waste discharge or for the conveyance of gases from a drainage system ‐ sparge pipe pipe having perforations through which water is sprayed for cleansing purposes stainless steel/nano‐antibiotic plastics composite pipe composite pipe consisting of an inner plastic pipe made of nano antibiotic plastics (mixed with nano antibiotic grain and thermoplastic plastic) and a polished and welded outer pipe made of stainless steel band ‐ ‐ . standpipe ‐ rigidly supported vertical length of pipe emerging from the ground, with a tap or valve, serving as an outdoor water supply point

stormwater pipe

drainage pipe for carrying stormwater from collection points on a property to the stormwater system suction pipe the length of pipe fixed to, and delivering water to, the inlet of a pump SWV (soil, waste and vent) pipe non pressure pipe for the conveyance of soil or waste discharge, or for the conveyance of gases from a drainage system ‐ tail pipe

that part of a union coupling which is a short straight or bent copper or brass pipe, with an integral collar at one end for engagement by the coupling nut, and the other end being plain vent pipe open ended pipe, connected at any high point in a hotheated water system, or from any vessel containing hotheated water, and arranged so that the open end discharges into the airspace of the cold‐ water feed tank, or to the outside atmosphere vented pipe ‐ discharge pipe with a vent connected at its upstream end waste pipe

pipe that conveys the discharge from waste fixtures water service pipe

the pipe of any water service

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pipe clip fixing arrangement designed to fit around a pipe or fitting and having provision for fixing to a support fixed pipe clip

clip designed to prevent movement in all directions of the pipework that is being restrained support pipe clip

clip designed to support pipework suspended from a structure, but which is not intended to prevent movement of the pipework in nominated directions

pipe hanger device for suspending piping from a structure pipe interrupter pipe through which water flows and into which air can enter through an annular aperture or through several holes or slits (air inlet apertures) pipe interrupter device

See backflow prevention device

pipe socket .

See socket pipe support

device for supporting and securing piping to walls, ceilings, floors or structural members piping

line of pipes, with or without valves or other fittings, connected together for the conveyance of liquids or gases

piston pump

See pump pitting resistance equivalent number

PREN comparison of the pitting corrosion resistance of various types of stainless steel based on their chemical compositions and specifically chromium (Cr), molybdenum (Mo) and nitrogen (N)

Note 1 to entry: The following equation is used to calculate the PREN:

PREN  Cr  3. 3  Mo   N where

× = 16 for duplex stainless steels × = 30 for austenitic stainless steels

× = 0 for ferritic and martensite stainless steels plain wall construction pipe or fitting of a homogeneous material with plain inside and outside surfaces plant room

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plug pipe fitting, for stopping up the socket end of a pipe or pipe fitting (see See also plug screw plug) end plug compression or capillary fitting for stopping up the end of a pipe fusible plug

safety device in the form of a plug of suitable low melting point material, which that closes the safety device channel and is intended to yield, at a predetermined temperature, to permit discharge of fluid

sealing plug

device fitted into a pipe or fixture, to prevent ingress of foreign matter, or to provide a permanent seal waste plug

stopper for use in a waste fixture which enables water to be temporarily retained

plug screw plug, having an external thread, intended for sealing the cleaning eye of a sanitary fitting plug tap

See tap . plug valve

See valve plumbing system

fixtures, fittings, pipes, materials, or appliances other than the sanitary drain, used for the collection and conveyance of any wastes or wastewaters from any premises and includes including all vents, flashing , and drinkable and non drinkable water service connected therewith services ‐ plunger pump

See pump PN

See nominal pressure pneumatic ejector See pump point of connection (sewer) the point provided for the connection of a property sanitary drain to the authority’s sewer point of connection (stormwater) the point provided for the connection of a property stormwater drain to the stormwater system polluted area

See contaminated area pop‐up waste

See waste positive displacement pump

See pump

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See drinking water precast chamber

See chamber pre‐heater solar water heater

See solar water heater Press fit end connector fitting end incorporating an elastomeric sealing element to which a pressing tool and jaw are applied to make a mechanical and leak tight joint press tool and jaw mechanical device which, by closing jaws, causes radial compression of the end on the connecting tube

pressure force per unit area applied at right angles to the surface of an object Note 1 to entry: The symbol for pressure is P or p and the SI unit is a pascal (Pa), equal to one newton per square metre (N/m 2). Other common units are pounds per square inch or bar (equal to 100 kilopascals). allowable operating pressure AOP allowable internal pressure, excluding surge, which a component can safely withstand in service . allowable site test pressure

ASTP maximum internal hydrostatic pressure that can be applied on site to a component in a newly installed pipeline back pressure difference between the pressure within any water service and a higher pressure within any vessel or pipework to which it is connected closing pressure pressure at which a pressure relief valve or a vacuum relief valve reseats or closes after discharging ‐ ‐ pressure in pipework under flow conditions

See water hammer dynamic pressure ratio ratio at the hot and cold inlets of the higher to the lower dynamic pressures under flow conditions interface pressure pressure at the surface separating two components of a joint, e.g., a rubber ring and the pipe socket maximum allowable operating pressure

MAOP maximum internal pressure, including surge, that a component can safely withstand in service nominal pressure pressure nominal PN

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pressure gauge instrument having a graduated scale for indicating fluid, air or gas pressure within a vessel or system pressure head

See head pressure‐limiting valve

See valve pressure pipe .

See pipe pressure ratio valve

See valve pressure‐reducing valve

See valve pressure‐relief valve

See valve pressure‐sustaining valve

See valve pressure test

See test pressure type vacuum breaker

See mechanical backflow prevention device pressurized chamber

See chamber primary circuit flow and return pipe

See pipe primer

in a protective coating application the primer is the first coat applied as a corrosion inhibitor, a sealer or compatible key for subsequent coats of finish in a protective coating application probable simultaneous demand the probable maximum flow rate for pipework supplying multiple dwellings, based on the usage patterns in domestic installations

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Corporate Member of the Institution of Engineers Australia or the Institution of Professional Engineers New Zealand (or eligible to become a Corporate Member of the Institution of Engineers Australia or the Institution of Professional Engineers New Zealand) and having appropriate experience and competence in the relevant field property any house, building, tenement, land, or premises property alignment the line between any thoroughfare, highway, street, road, lane, path, or any other form of carriageway and an allotment of land abutting thereonit property service the pipes and fittings used or intended to be used for the supply of water to a property, from the water main up to and including the meter assembly, or to the stop tap if no meter is required puddle (weep) flange

See flange pulp disposal macerator appliance used to dispose pulp single use containers (such as bedpans, urinals and bowls) containing human waste to sewer ‐ Note 1 to entry: The pulp disposal macerator is not used in conjunction with a toilet pan or pump.

. pump mechanical device generally driven by a prime mover, and used for raising fluids from a lower to a higher level or for circulating fluid in a pipework system airlift pump device for raising a liquid from a lower level to a higher level by use of compressed air bucket pump reciprocating pump being a lift pump incorporating a displacing member, called the bucket, in the form of a short cylinder embodyingincorporating a non return valve centrifugal pump ‐ pump in which motion is imparted to a fluid by the centrifugal force imparted by a rotating impeller circulating pump pump used to ensure flow of hotheated or cold water in a loop system diaphragm pump pump in which liquid is drawn into and discharged from a chamber through non return valves by the change in the capacity of the chamber through the flexing of a diaphragm ‐ dry well pump

See freestanding pump force pump pump that forces water against an opposing pressure free‐standingfreestanding pump pump installed in a dry situation free of sewage surrounding the pump (i.e., non

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This is a draft document made available by Standards Australia to the registered licensee solely for review in providingAny other use public of the document comment. is prohibited. The registered licensee may print once only. Further copying, storage, distributionFull licence terms or are use available on network at https://www.standards.org.au/home/public-comment-document-licence-agreement is prohibited. Standards Australia Limited does not warrant or represent that the draft document is accurate or complete or that it should be relied on for any particular purpose. Any user of the document should rely on the final published version. DR AS/NZS 3500.0:2020 Note 1 to entry: A free standing pump is not submersible). hydraulic ram pump ‐ automatic pumping device that utilizes the energy of flowing water jack pump bucket pump used for hydraulic pressure testing of pipework jet (pump ejector pump) pump in which a pressure deficit is created by a venturi or nozzle. The and the pressure differential then causes the liquid to be pumped macerator pump positive displacement pump containing a macerating device piston pump reciprocating pump incorporating a piston plunger pump reciprocating pump incorporating a long cylindrical piston pneumatic ejector pump pump in which liquid flows by gravity into an ejector pot suitably fitted with valves. The container and is then emptied by the introduction of compressed air positive displacement pump pump that displaces a fixed amount of water with each stroke or rotation irrespective of the pressure reciprocating pump . pump in which liquid is alternately drawn into and expelled from a chamber through non return valves by the displacing action of a moving member having a reciprocating movement, i.e., a linear movement regularly reversing in direction. The moving member may be a bucket, a piston,‐ a plunger or ram

Note 1 to entry: A reciprocating movement is a linear movement regularly reversing in direction.

Note 2 to entry: The moving member may be a bucket, a piston, a plunger or ram. screw pump extended version of the axial flow or propeller pump, comprising an inclined spiral screw in a pipe, which that rotates, thus lifting liquid from its submerged lower end semi‐rotary pump pump that is usually manually operated by the angular displacement of two radial valved vanes working in a circular casing ‐ sewage pump pump used for raising sewage from a lower to a higher level small bore pumping unit pumping unit that includes a pump and receiving vessel used for the discharge of waste and wastewater from dedicated fixtures to the sanitary plumbing and drainage system

Note 1 to entry: Dedicated fixtures may include WC pans, basins, showers, kitchen sinks, laundry troughs, baths and/or bidets.

Note 2 to entry: The small bore pumping unit may include a macerator where discharging waste from a soil fixture. ‐ spa pump mechanical device by which water is drawn from the spa bath and returned under pressure through the jet inlet fitting

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pump that grinds the sewage into small particles prior to its passing through the impeller. This includes a grinder pump, which is typically only a low capacity pump which may service dwellings; and a “mutrator” pump, which typically combines the cutter and impellor action within the one unit and is operated by the same motor

small centrifugal pump used for raising sullage from a lower to a higher level vacuum pump

pump that extracts air from a pipe system so as to maintain it at a pressure below atmospheric, pressure thereby inducing the flow of a liquid water pump

pump used for raising water from a lower to a higher level or for pressurizing a water supply system qualified engineer

See professional engineer . push‐on end connectors fitting end which incorporates an elastomeric sealing element and a grab ring which makes a mechanical and leaktight connection when pushed onto a tube

quality control test See test

rainhead collector of rainwater, generally of rectangular shape at the end of a box gutter and external to a building, connected to an external downpipe

Note 1 to entry: A rainhead has a similar function to a sump. rate of setting the time taken for a material to harden to a prescribed degree or condition rated system

See solar water heater — terms raw sewage

See sewage readily accessible accessible without hazard, undue difficulty, or use of a tool

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See backflow prevention device reducer

pipe fitting for connecting pipes of different sizes together. Sometimes referred to as a taper or reducing fitting

Note 1 to entry: A reducer is sometimes referred to as a taper or reducing fitting. reducing bend See bend reducing bush threaded fitting with internal and external threads used for connecting two different sizes of pipe.

It has an internal and an external thread . reducing fitting

See reducer reducing piece

tapered length of spigot and socket pipe, in which the spigot fits the larger pipe and the socket the smaller pipe. It

Note 1 to entry: The reducing piece may be concentric or offset. reducing socket See socket reflux valve

See valve regulatory authority the authority that is empowered by statute to exercise jurisdiction over the installation of water, plumbing, sewerage or stormwater works relief valve

See valve relief vent

See vent relocatable home ( relocatable dwelling) See movable dwelling reseating pressure the actual inlet pressure at which a pressure relief valve or a vacuum relief valve reseats or closes after discharging ‐ ‐ COMMITTEE IN CONFIDENCE © Standards Australia Ltd Page 68 of 112 Last saved: 5/06/2020 9:03 AM 104855 AS NZS 3500.0 Redline.docx

Note 1 to entry: Components should be produced in accordance with the manufacturer’s specification. reseating pressure See pressure reseating temperature temperature at the inlet of a valve that first allows it to close restrictor (orifice plate) apparatus that is installed in a pipeline to regulate the flow. Note 1 to entry: It does not include pressure reducing valves. It may be designed for water, SWV or drainage applications . ‐ reticulation main See main return bend

See bend . return pipe

See pipe reverse action float valve

See valve ribbed profile construction pipe or fitting with a plain inside surface and with a solid or hollow outside helical or annular ribbed or corrugated external surface

right angle tap See tap rigid pipe

See pipe

residential building building that containscontaining one or more sole occupancy units sole occupancy unit room or other part of a building for occupation by one or joint owner, lessee, tenant, or other occupier to the exclusion of any other owner, lessee, tenant, or other occupier

Note 1 to entry: A sole occupancy unit may include —

(a) a dwelling; (b) a room or suite of rooms in a Class 3 building which includes sleeping facilities; (c) a room or suite of associated rooms in a Class 5, 6, 7, 8, or 9 building; or COMMITTEE IN CONFIDENCE © Standards Australia Ltd Page 69 of 112 Last saved: 5/06/2020 9:03 AM 104855 AS NZS 3500.0 Redline.docx

resilient seat seal mechanism between the body and the dome, provided by an elastomeric material, which may be on either of the mating surfaces or provided as a separate elastomeric gasket retrofit market retrofit retail market market segment requiring tap ware subassemblies, components and/or replacement parts to be installed in the field with other manufacturers’ compatible products riser (

vertical extension of the inlet leg of a trap, to floor or ground level. A straight length of pipe fitted to a trap to extend it. It may allow connections of pipes.

Note 1 to entry: Risers may be plain double inlet, or single inlet.

Note 2 to entry: A plain riser usually extends to floor level and is fitted with a grate, so as to serve as a floor waste outlet. riser ( vertical section of pipe for conveying water from a lower to a higher level (see also dropper) See also dropper riser cap

riser plug . cap or plug attached to the top of the riser to prevent infiltration of ground or surface water and to provide access into the riser for routine operations and maintenance

Note 1 to entry: Caps or plugs may be either a locking type or a type that will permit flow relief. rising main See main

rodding system of rods which are progressively joined to clear sewerage and stormwater drains rodding point

removable ground level cap through whichproviding access may be had for cleaning and inspecting the sewage (foul) water drainage system

roof drain above ground gutter or conduit for the collection and conveyance of stormwater from the roof to the rainhead or point of entry to a downpipe ‐ root penetration the intrusion of plant roots into a drain or sewer, which that can lead to blockage or to the inflow of ground water

rubber ring joint

See joint rubber ring sealing medium used in pipe joints rubber ring joint

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See trap S‐trap (universal)

See trap safe tray watertight tray fitted under a water heater or, feed tank or sanitary appliance, to intercept condensation, spillage or leakage, and provided with a waste pipe to direct any discharge to a safe location safe waste

See waste safety shower

See shower safety valve

See valve sag pit inlet pit located in a depression where stormwater ponds over the inlet due to restricted entry salinity of water the concentration of chemical salts dissolved in the water. It . Note 1 to entry: Salinity is usually expressed in milligrams per litre (mg/L) or parts per million (ppm)). sample units of product drawn from a batch or lot and selected at random without regard to quality Note 1 to entry: The number of units of product in the sample is the sample size. sampling plan specific plan indicating the number of units of components or assemblies to be inspected sandwich construction pipe or fitting with smooth inside and outside surfaces in which the inner and outer wall layers are of solid PVC, PE or PP, connected by a foam or solid intermediate layer of the same material, and the same resin type (PE or PP) is used for all layers sanitation the term used to describe the activitiesaction of washing and/or excretion carried out in a manner or condition such thatto minimize the effect on health is minimized, with regard toof dirt and infection on health

sanitary appliance appliance intended to be used for sanitation, and which is not other than a sanitary fixture. Included are machines

EXAMPLE Machines for washing dishes and clothes. sanitary fixture any fixture which is intended to be used for sanitation

sanitary drainage system

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Note 1 to entry: The system is usually located below ground level. sanitary napkin disposal unit electrically operated mechanical appliance for reducing sanitary napkins intoto fragments small enough to be flushed into the drainage system

sanitary plumbing system

assembly of pipes, fittings, fixtures and appliances, which is used to collect and convey sewage to the sanitary drainage system

sanitizer that which makes sanitary scabble the cleaning and provision of a roughened surface for effective jointing with another material scale

<1 > coating of mineral matter, which may be deposited from hard water onto the inside surfaces of boilers, water pipes, vessels and apparatus

<2 the> oxide formed on metallic surfaces during heating at elevated temperatures scaling factor ratio of the end use surface area to volume to the test surface area to volume scour pipe ‐ ‐ ‐ ‐ ‐ See pipe . scour valve

See valve scouring the cutting action caused by the flow of liquids at high velocity screen device made from wire mesh or spaced bars used to separate solid matter from a liquid screw pump

See pump screwdown hydrant

See fire hydrant screwdown pattern tap

See tap screwdown valve

See valve screwed boss

See boss scum

floating mass of sewage or sullage solids buoyed up by entrained gas, grease or other substances seal coat coating applied to a cement mortar lining to control the interactions between the lining and the contents of the pipe or fitting sealing device

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See plug sealing ring

See jointing sealing ring secondary circuit flow and return pipe

See pipe sedimentation tank

See tank selective surface

See solar water heater — terms self‐cleansing velocity

the velocity of a flowing liquid in a pipe or channel, necessary to prevent the deposition of solids in suspension

self‐closing tap

See tap self‐sealing device sanitary device incorporating an elastomeric diaphragm that allows wastewater to discharge from a fixture in one direction but seals to prohibit the entry of gases in the opposite direction semi‐rotary pump

See pump . sensor tap

tap operated by a mechanism without physical contact (AS 3718) septic sewage

See sewage septic tank

See tank service valve

See valve set pressure

1 the nominal pressure at which a valve is designated to operate Note 1 to entry: For example: cold water expansion valves.

pressure at which a pressure or a vacuum relief valve or a vacuum relief valve is set to first open in service ‐ ‐ 2 the pressure which a pressure reducing valve is set to maintain ‐ set temperature the nominal temperature at which a temperature relief valve is set to first open in service sewage ‐ the wastewater from the community, including all faecal matter, urine, household and commercial wastewater that containscontaining human waste

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untreated sewage septic sewage

sewage in which anaerobic decomposition is taking place. Note 1 to entry: The septic state is characterized by a black or almost black colour and is normally accompanied by a smell of hydrogen sulphide. stale sewage sewage that has almost or has already reached an anaerobic state

sewage ejector See pump, pneumatic ejector pump sewage pump

See pump sewer conduit for the carriage of sewage, which that is vested in the local sewerage authority sewer pipe

See pipe sewerage system

system that includes all sewer and sewerage works vested in the local authority . sharp edge clearly defined edge, corner or point that has the potential to cause personal injury to the handler (e.g. on a pipe end, fitting or component) short bend

See bend short engagement socket

See socket

shower <1> sanitary fixture for human body cleaningablutionary purposes <2> showerhead through which water is intended to pass forming a spray for bathing purposes

Note 1 to entry: A showerhead may include a fixed or pivot arm, flexible hose (with or without a flow controller), tap top assemblies, or other components. drench (safety) shower safety shower rose shower with a large output showerhead arranged to automatically give the user a rapid drenching in an emergency

shower base floor tray, usually of concrete or plastics, for use as the base of a shower compartment with a waste outlet shower bath

See bath

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compartment for ablutionary purposes, consisting of an integral basewall and wallbase or a complete moulded or fabricated cubicle with suitable openings and fittings

side entrance chamber

See chamber side‐fed water heater

See water heater side overflow device overflow device associated with an internal box gutter alongside a parapet wall and sump silencing device device attached to the outlet of a float control valve to reduce the noise of incoming water, by directing the incoming water below the surface of the water already in a vessel

silt arrester

See arrester . silver ‐brazed joint

See joint silver brazing alloy

brazing alloy that containscontaining silver as one of the major constituents single air valve

See valve single bowl sink

See sink single stack modified system

system of sanitary plumbing (differing from a single stack system,) in thatwhich additional venting is provided therein by means of a relief ventvents, which is interconnectedare connected at intervals with the stack, at intervals, by means of cross vents single stack system ‐ system of sanitary plumbing in which the stack and discharge pipes also serve as vent pipes single wall heat exchanger

See heat exchanger

sink fixture for containing one or more bowls forto temporarily retainingretain water for cleansingcleaning purposes, and for receiving domestic, culinary, laboratory or industrial wastewaters .

Note 1 to entry: Each bowl has provision for a waste connection. bar sink

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sink designed, abutting a wall or walls, with a fascia, a tiling flange, or an upstand abutting a wall or walls cleaners’cleaner’s sink sink that is fixed at or near floor level to facilitate the filling and emptying of cleaning buckets. Note 1 to entry: It is usually provided with a protective strip on the top front edge to prevent damage by the buckets , and with a grate on which to rest the buckets . double bowl sink unitsink consisting of two sink bowls. It Note 1 to entry: Each bowl may incorporate a sink drainer. flushing sink sink with integral flushing rim connected to a flushing device to enable carriage of waste to the sanitary drainage system hospital sink

sink specifically adapted for hospital applications inset sink

sink designed with a sealing rim for installation in a bench top island sink

sink not abutting or near a wall laboratory sink

. sink constructed of acid resisting material and adapted for laboratory applications pot sink ‐ large sink designed for use in commercial premises,kitchens for the washing of cooking utensilsequipment or similar containers single bowl sink

unitsink consisting of a single bowl. It Note 1 to entry: The bowl may incorporate a sink drainer. triple bowl sink unitsink consisting of three sink bowls and incorporating Note 1 to entry: Each bowl may incorporate a sink drainer.

sink drainer area adjacent to the sink bowl for draining purposes siphon pipe system, typically in the shape of an inverted “U” with unequal legs, for conveying liquid over the edge of a vessel and delivering it at a lower level by utilizing atmospheric pressure

siphonage

the action of a siphon siphonic water closet pan

See water closet pan site stormwater drain

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See urinal sleeve

<1 > conduit built into athe structure of a building to allow another pipe to pass through, giving protection and allowing for relative movement

<2 > form of a double socket for joining two pipes

<3 > flexible membrane used to protect the external surface of a pipe (usually of ferrous material) from corrosion

sliding support

device for supporting a pipeline in such a way that thermal expansion may beis permitted slip fitting

See fitting slop hopper

soil fixture, other than a water closet pan or urinal, used for the discharge of soil wastes and provided with a flushing apparatus, tap and grating

sludge

. semi liquid solids settled from sewage in septic tanks, sedimentation tanks and grease arrrestorsarrestors ‐ sludge valve

See valve sluice valve

See valve smoke test

See test soakaway

See absorption pit

socket <1 the> end of a pipe or pipe fitting, having with an enlarged internal diameter for the reception ofreceiving the plain or spigot end of another pipe, or pipe fitting

<2 > internally threaded coupling used in joining tubes double socket

fitting with a socket at each end for jointing the spigot ends of two pipes in the same alignment long engagement socket

capillary fitting socket of a length suitable for making a soft soldered joint loose socket

cast iron soil, waste, vent or rainwater pipe fitting, twice the length of a normal socket, for jointing the spigot ends of two pipes in the same alignment

pan socket

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the bell shaped end of a pipe, which enables the fitment of a spigot reducing socket ‐ fitting havingwith a socket on either end of different diameters, enabling the connection of two pipes of different diameter

short engagement socket

capillary fitting socket of a length suitable for making a silver brazed joint tapered socket ‐ spigot or socket in which the diameter is tapered slightly along its length to facilitate jointing

socket bursting test See test soffit

obvertthe highest point of the internal surface of a pipe or culvert at any cross section. The term “obvert” is also used ‐ soft solder

See solder soil connector fitting which conveys soil liquid from a fixture to discharge pipework . soil fixture

See fixture soil pipe

See pipe soil stack

See stack soil, waste and vent pipe

See pipe soil waste dump point

discharge point for the reception of sewage solar altitude

See solar water heater — terms solar noon

See solar water heater — terms

solar water heater — terms absorber device within a collector for absorbing radiant energy and transferring thisradiant energy as heat into a fluid

against‐pitch installation

installation in which the inclination of the collector is opposite to the pitch of the roof cross‐pitch installation

installation in which the inclination of the collector is at an angle to the pitch of the roof

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Note 1 to entry: They may be installed as either single or multiple units, supplying heated water to a common container. collector aperture the maximum projected area through which unconcentrated solar radiation enters a collector forced circulation system system that utilizes a pump or a fan to circulate the heat transfer fluid through the collector(s) insolation exposure to the rays of the sun latitude angle the angular distance of a meridian measured either north or south from the equator orientation (angle) the direction a collector (or a building) faces, expressed . Note 1 to entry: Expressed as the azimuth angle of the horizontal projection of the surface normal. rated system system comprising collector(s) and container, which has Note 1 to entry: The rated system will have been evaluated for performance in accordance with the requirements of AS 2813, AS 2984, AS 4234 or AS 4445.1 . selective surface surface of which the optical properties of reflectance, absorption, transmittance and emissivity are spectrally dependent

solar altitude

the angle between the line joining the centre of the solar disc to the point of observation and the horizontal plane through the point of observation

solar noon

the local time of day when the sun crosses the observer’s meridian

supplementary heating source the heating appliances or devices added to a solar water heater to supply controlled thermal energy i.e., gas burner or electric element for days of insufficient irradiation, inclement weather and either peak usage or excessive demand for hotheated water

EXAMPLE Gas burner or electric element.

supplementary primary heater circuit

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Note 1 to entry: Water cannot be drawn off from the primary heater circuit. thermosiphon circulation of a liquid established through differences in density between the warmer and cooler portions of liquid thermosiphon head head due to the difference in density between warmer and cooler portions of the liquid tilt (angle) the angle between the horizontal plane and the plane of the specified surface unrated system system comprising new or existing collector(s) and container (either component new or existing), which has not been evaluated for performance in accordance with the requirements of AS 2813, AS 2984, AS 4234 or AS 4445.

Note 1. to entry: An unrated system includes the case of adding a collector or container to an existing system . with‐pitch installation installation in which the inclination of the collector coincides with the pitch of the roof

solar water heater appliance to heat water by the use of solar energy . close‐coupled system system in which the storage vessel is mounted close to the collector and on a common support frame closed system, sealed or unvented system system in which the heat transfer fluid is completely sealed from the atmosphere direct system solar heating system in which the heated water that will ultimately be consumed or circulated to the heat user passes through the collector indirect system solar heating system in which a heat transfer fluid, other than the water ultimately consumed or circulated to the heat user, passes through the collector integral solar water heater solar water heating system in which the container and collector are constructed as a single unit open system system in which the heat transfer fluid is in extensive contact with the atmosphere remote storage system system in which the storage vessel is separate from the collector and is located at some distance from it thermosiphon system system that utilizes only density changes of the heat transfer fluid to achieve circulation between collector and storage, or between collector and heat exchanger unvented system solar water heatersystem in which no provision is made for a vent permanently open to the atmosphere COMMITTEE IN CONFIDENCE © Standards Australia Ltd Page 80 of 112 Last saved: 5/06/2020 9:03 AM 104855 AS NZS 3500.0 Redline.docx

solder alloy used in a molten state for joining certain metals together low‐lead‐free solder solder containing less than 0.1 % lead soft solder alloy (usually based on tin) used for the low temperature joining of metal components soldered joint ‐ See joint soldering the process of joining of metals, in which a molten filler metal (solder) is drawn by capillary action into the space between the closely adjacent surfaces of the parts to be joined.

see brazing

Note 1 to entry: The melting point of the filler metal is usually below 500 °C. Synonymous with soft soldering solenoid (operated) valve See valve solvent cement . solvent based fluid, designed for bonding plastics, pipes and fittings Note 1 to entry: Only certain plastics can be joined by solvent cements and the composition of the cement used has‐ to be appropriate to the particular plastics material to be bonded. solvent cemented joint See joint spa bath

See bath spa pump

See pump sparge pipe

See pipe spear head

device for dewatering water charged ground special tool ‐ mechanism or method specifically designed to prevent the unauthorized adjustment of the temperature control

Note 1 to entry: Screwdrivers, cross head screwdrivers and conventional spanners are not considered special tools. spigot the plain or specially formed end of a pipe for insertion in a socket or coupling to form a joint spigot and socket joint

See joint

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maximum height to which water will rise while overflowing the rim level or through channels or openings having a free discharge to the atmosphere under all conditions, when water is flowing into the fixture or receptacle at the maximum rate, under a specified water pressure with all service outlets closed

Note 1 to entry: Spill level is determined when water is flowing into the fixture. or receptacle at the maximum rate, under a specified water pressure with all service outlets closed.

Note 1 to entry: The dynamic pressure is equal to the manufacturer’s specified maximum operating pressure.

spindle seal retainer component that is in direct contact with the spindle seals to ensure they are retained split collar

See collar spray outlet

See outlet . spray tap

See tap

spraying apparatus apparatus designed for connection to be directly or indirectly connected to the water supply system, to spray fertilizers, insecticides, detergents or similar contaminable liquids to the atmosphere . It includes kitchen

EXAMPLE Kitchen exhaust degreasers. It

Note 1 to entry: Spraying apparatus may alternatively be designed for the cleaningto clean or clearing ofclear drains, or for the flushing of to flush various devices. hose ‐ connected spraying apparatus spraying apparatus intended for temporary attachment to a flexible hose, but Note 1 to entry: This does not includinginclude steam generators.

spreader ( fitting attached to the end of a urinal flush pipe and havingwith a slotted or perforated outlet spreader (

> device fitted to the foot of a downpipe to evenly distribute rainwater onto a roof at a lower level

spring bend See bend spring hydrant

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See junction

stack any vertical pipe, including offsets, extendingthat extends through more than one floor level combined stack any stack that carries discharges from both soil and waste fixtures discharge stack main vertical discharge pipe, having one or more branch discharge pipe connections, and whichthat is vented to the atmosphere at one end via a discharge stack vent soil stack stack that carries the discharges from one or more soil fixtures and may also carry waste discharges

Note 1 to entry: The stack may also carry waste discharges. stack height number of floor levels through which the stack passes, counted from the base of the stack up to, but not including, the floor level on which the highest fixture is connected

Note 1 to entry: Where the distance between the base of the stack and the lowest floor exceeds 2.4 m, this interval should be counted as an additional floor level. waste stack

. stack that only carries discharges from waste fixtures

stack vent See vent stale sewage

See sewage standard dimension ratio

SDR nominal ratio of the pipe outside diameter to its wall thickness standing overflow

See overflow standing waste

See waste standpipe

See pipe static head

See head steady mixed water discharge temperature single temperature reading taken at 30 s ± 5 s following an applied change in the water supply conditions steep offset

See offset step‐iron

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See valve storage tank

See tank storage water heater

See water heater stormwater

the runoff due to rainfall from roofed areas, termed roofwater, from paved and unpaved areas, termed surface water and from water bearing ground, termed subsoil water naturally occurring water from rainfall on or around the site or water flowing onto the site

stormwater channel . artificial channel for the carriage of stormwater, roof water, surface water, subsoil water or permitted trade waste, which does not convey any sewage

stormwater drain

the conduit of a stormwater drainage installation normally laid underground for the conveyance of stormwater from a property to the stormwater system

subsoil drain

the buried perforated or permeable conduit of stormwater installation laid underground for the collection and conveyance of water of subsoil water and ground origin or for in ground dispersal of stormwater from the property to a downpipe or surface water drain ‐ stormwater draindrainage system roof drainage system, surface water drainage system and subsoil drainage system on a property for the collection and conveyance of stormwater stormwater installation comprises roof gutters, downpipes, surface channels, kerbs and gutters, subsoil water drains and stormwater drains upon anyon a property which are used, or intended to be used, for the conveyance of stormwater from such that property .

Note 1 to entry: The installation includes inlet pits, stormwater pits, apparatus and appliances connected thereto but does not include any part of the authority stormwater system. stormwater main See main stormwater pipe

See pipe stormwater pit

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stress relieving

form of heat treatment carried out to remove stresses produced by manufacturing or forming operations structural liner liner that has sufficient pipe ring stiffness so as to be self supporting and able to resist buckling due to groundwater or soil loads in the absence of support from the host pipe ‐ stuffing box (gland)

See gland submersible grinding pump

See pump submersible pump

See pump subsoil drain

See stormwater drain

subsoil water .

See stormwater suction pipe

See pipe sullage

domestic wastes including floor wastes from baths, basins, showers, laundries, and kitchens, including floor wastes from these sources sullage dump point

point of connection point provided in the house drainage line to receive waste discharges sullage pump

See pump sullage tank

See tank sump

<1> pit, formed in the floor of a structure or sunk below the general base of an excavation, to collect unwanted water for the purpose of facilitatingto facilitate its removal

<2> collector of rainwater, generally of rectangular shape, in the sold of a box gutter and connected to a downpipe within the building perimeter that is used to increase the head of water at the entry to the downpipe and thus increase the capacity of the downpipe

supplementary fixture overflow overflow for installation to an existing fixture rather than incorporated as an integral component of a fixture supplementary heating source

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See solar water heater — terms supplementary water heater

See water heater support pipe clip

See pipe clip surcharge (sanitary)

overflow from a sewer or combined sewer caused by overloading, or chokage. Usually used in reference

Note 1 to entry: Surcharge usually refers to wet weather infiltration or inflow. surcharge pit pit where the water level is allowed to rise above the grate of the pit causing water to overflow from the stormwater drainage system surface box

metal frame, with a lid, fixed in the ground with the lid level with the surface, to give access to an underground fitting surface water

the run off from unpaved or paved land or buildings as opposed to wastewater naturally occurring water, other than sub surface water, which results from rainfall on or around ‐ the site or water flowing onto the site

‐ . surface water drain underground non perforated conduit for collection and conveyance of stormwater of surface origin ‐ surgeon’s tap

See tap swarf

small chips removed from a material during cutting, drilling or machining operations sweep junction

See junction swept junction

See junction swivel fitting

See fitting SWV (soil, waste and vent) pipe

See pipe tail pipe

See pipe

tank fixed container for storing liquids automatic flush tank

flushing tank arranged to discharge its contents at regular intervals break pressure tank

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tank from which water from a fixture is discharged to flush a system of drains sedimentation tank

tank through which water or wastewater is passed so that suspended matter may settle to the bottom and be removed

septic tank

one storey chamber, or chambers,(s) through which sewage or sullage, or both, are allowed to flow slowly to permit settleable suspended matter to settle and be retained, so that organic matter contained therein can be decomposed (digested) by an anaerobic bacterial action in liquid

storage tank

container for storing water sullage tank

tank used to pre treat sullage, prior to discharge to a common effluent drainage system water storage tank ‐ container for storing water .

tap <1 > valve with an outlet used as a draw off or delivery point <2 > tool for cutting an internal screw thread ‐ bib tap screw down pattern or ceramic disc draw off tap with horizontal inlet and free water outlet bidette tap ‐ ‐ tap that discharges over the rim of a bidette and provides an air gap combined tap

water taps coupled together with a common outlet nozzle, which may be (either fixed or swivelling, so as) to discharge hotheated, cold or mixed water drain tap

tap fitted to drain off the contents of a water system, pipe or vessel draw‐off tap

tap for the purpose of drawing off water elbow action tap

tap with a lever handle that can be operated by the elbow electronic tap

tap activated by a sensor beam and solenoid valve. The temperature of the water is normally preset

Note 1 to entry: The temperature of the water is normally preset. ferrule tap

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Note 1 to entry: It usually incorporates a loose jumper valve, permitting flow in one direction only. foot action tap tap that can be operated at floor level by thea foot footpath tap

tap or ball valve, located between the water service and the supply pipe to the premises used, to shutoff water to the premises

hose tap

tap with an external screw thread on the outlet for the attachment of the coupling of a flexible hose

in‐line tap

tap with the centre line of both the inlet and the outlet in line isolating tap ‐ ‐ in line tap for insertion into the pipeline to deliver water to a tap, valve, fixture, or combination thereof, and which is shut only for maintenance or failure of the downstream installation ‐ lever handled tap

tap that is operated by a lever lockshield tap (vandal proof) vandal proof tap

tap with a spindle so shrouded that it can only be operated only by a special removable key . main tap tap installed in the main water supply line meter tap

See footpath tap mixing tap

tap into which hotheated and cold water entering through separate ports are mixed in a chamber and then delivered through a single common outlet, the temperature of the mixed water being controlled by the operation of a control handle or handles

Note 1 to entry: The temperature of the mixed water is controlled by the operation of a control handle or handles. pillar tap screwdown pattern draw off tap with vertical inlet and free water outlet plug tap ‐ tap, incorporating a plug, whichthat can be turned to move its ports relative to the body inlet and outlet and so control flow.

Note 1 to entry: It may provide a straight through, full bore waterway. right angle tap ‐ ‐ tap in which the centre linescentrelines of the inlet and outlet are at right angles screwdown pattern tap ‐ tap in which the valve disc or washer is screwed down against the flow, to seat on a face at right angles to the axis of the threaded spindle

self‐closing tap

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tap that delivers a restricted rate of flow in the form of a spray stop tap

screwdown pattern tap with horizontal or right angled inlet and outlet connections. It usually incorporates a loose jumper valve, permitting flow in one direction only ‐ Note 1 to entry: It usually incorporates a loose jumper valve, permitting flow in one direction only. surgeon’s tap tap or combination tap assembly fitted over a surgeon’s scrubhand wash area, which is operated otherwise than by the hand

tap body part of a tap or tap assembly that includes the inlet and outlet connections tap head part of a tap assembly that is removable and retains the shut off device tapset breaching piece assembly ‐ two or more stop tap bodies in an assembly thermostatic mixing tap tap into which heated and cold water entering through separate ports are mixed in a chamber . and then delivered through a single common outlet

Note 1 to entry: The temperature of the mixed water is automatically controlled at a user adjustable temperature that is suitable for direct contact with the skin and which gives the user the ability to shut off the outlet flow. ‐ ‐ Note 2 to entry: A product with multiple outlets selected by an integral diverter valve is considered to have a single outlet.

Note 3 to entry: The product may also deliver cold water without mixing. timed flow tap tap that is automatically turned off after a predetermined delivery time or volume or both union stoptap

stoptap with provision for connection to a pipe by means of a coupling nut vandal proof tap

See lockshield

taper fitting See reducer tapered socket

See socket tapping band

band clamped around a pipe to enable a mechanical connection to be made to the pipe tapping saddle

See tapping band

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See valve temperature‐pressure‐relief (TPR) valve

See valve tempering valve

See valve temporary water service

service enabling the supply of water from a water main or aqueduct to one or more premises not fronted by a water main or aqueduct

test procedure by whichto determine if the article complies with specified requirements for acceptability absorption test test carried out to determine the suitability of soils for absorption trenches, or for septic or sullage disposal systems

. air test

test of the constructed performance quality of pipelines or vessels, whereby loss of pressurized air is observed either directly, by means of a soap solution or the like applied to the pipeline section under test, or indirectly, as in the case of assembled lines of permeable pipes, by comparing the measured rate of loss of air pressure against predetermined acceptable limits

bulkhead test test where the testing machine provides external restraint to make a watertight joint at each end of the valve contamination of water test test carried out to determine the effect a material will have on potabledrinkable water dye test test for tracing the flow in a pipeline, or for locating leaks by introducing colouring matter free end test test where the valve ends are blanked off so that the axial hydraulic force is not externally restrained hydrostatic test test carried out on pipes and fittings by the internal application of water under a specific head mirror test

methodtest for inspecting the interior of a pipeline by means of light reflected by a mirror performance test

test of a product carried out under specified operating conditions for a specific period, or a certain number of operating cycles, to determine whether the product fulfils specified performance requirements pressure test

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(a) Note 1 to determine the watertightness of a completed pipeline;

(b) for quality control purposesentry: This test is often undertaken during manufacture; and

(c) to determine the burst strength for quality control purposes. quality control test test carried out during or after manufacture, to prove the quality of a production run smoke test test for locating leaks in a pipe system by applying smoke under pressure internally from a suitable apparatus

socket bursting test

test carried out for acceptance of sockets of pipes or fittings, by applying internal pressure to the walls of the socket using an appropriate apparatus

type test test or series of tests directed towards approval of a design, conducted to determine whether a product is capable of meeting the requirements of the product specification water seal test

test carried out to determine the effectiveness of the water seal in a trap

test certificate certificate that shows the results of tests undertaken to establish stated requirements . test pressure the pressure applied internally to pipes and fittings when being tested for strength and watertightness test specimen part or parts cut from a test piece for subjectionand subjected to various tests test opening opening with a removable cover in the body of a fitting and of sufficient size to permit the installation of a plug for use in the hydrostatic testing of a pipeline thermal shut‐off operating safety feature wherein, if a thermostatic mixing tap is subjected to the shut off of the cold or heated water supplied to it, the risk of scalding or cold shock to the user or person(s) exposed to the mixed water is minimized ‐ thermosiphon

See solar water heater — terms thermosiphon head

See solar water heater — terms Thermostatthermostat‐controlled water heater

See water heater thermostatic mixing valve

See valve thread runout ( tread washout) the space allowed adjacent to a shoulder to provide tooling clearance for cutting internal or external threads

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See joint throat radius junction

See junction thrust block

See anchor blocks toby (box valve box) surface box, generally set flush with paving or other surface, to cover the stop tap or control valve of a water supply

total dissolved solids

the TDS total concentration of soluble material present in the water. Note 1 to entry: It is usually expressed as TDS in either parts per million (ppm) or milligrams per litre (mg/L )). toxic any substance that would normally havehaving detrimental health effects if consumed trade waste

See waste . trafficable areas

areas subject to vehicular traffic transpiration

transfer of water from plants into the atmosphere transpiration bed

trap any fitting designed to retain a water seal for the purpose of preventing the passage of gases bottle trap trap in which the seal is maintained by an internal membrane, the configuration of which will not unduly restrict the flow through the trap boundary trap trap used to aerially disconnect the house drain from the sewer combination trap trap with a swivel joint to facilitate use as an S trap or P trap fixture trap ‐ ‐ trap connected directly beneath the outlet of a fixture grease trap

See arrestor gully trap

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integral trap

trap incorporated as part of a manufactured fixture P‐trap

trap constructed with the inlet leg vertical and the outlet leg inclined below the horizontal within specified limits

P‐trap (universal)

P trap with a swivel joint on the outlet leg to facilitate alignment S‐trap ‐ trap in which the outlet leg is parallel to the inlet leg S‐trap (universal)

S trap with a swivel joint on the outlet leg to facilitate alignment tube trap ‐ trap in which the seal is maintained without the use of an internal membrane water trap

fitting that uses water to maintain a seal to prevent foul air escaping from the plumbing system or sewage (system and entering a building waterless trap

fitting that uses means other than water to maintain a seal to prevent foul air escaping from the plumbing system or sewage system and entering a building

. weir of trap

the lowest point of the outlet leg of a trap

trap seal test See water seal test trap vent

See vent trap water seal

the depth of water retained in a trap which acts as a barrier to the passage of air through the trap trailing water volume remaining full flush volume of water discharged from the pan after the last four test pieces are expelled from the outlet spigot of the pan

Note 1 to entry: The trailing volume is to ensure solids transportation within the sewer lines. triple bowl sink See sink

trough open boxlike fixture for containing water ablution trough fixture for holding water for cleansingcleaning purposes which has a number of taps spaced to enable multiple use

laundry trough

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trough urinal See urinal trunk water main

See main tube

length of circular pipe of uniform cross section tube trap ‐ See trap tubular

pipe fittings in the form of a pipe piece, nipple, longscrew, bend, spring or return bend tundish

fitting into which pipework can discharge with an air gap tungsten inert gas (TIG) welding

TIG process of electric welding where an arc is struck between the work piece and a tungsten electrode shielded by an inert gas (commonly argon). A separate filler rod is required

Note 1 to entry: A separate filler rod is required. type test . See test ultra‐violet (UV) light

UV light rays that have a wavelength just shorter than the violet end of the visible light spectrum uncontrolled water heater

See water heater Union fitting for connecting or disconnecting two pipes union end connector

See joint connector end for a pipe or fitting that allows a union joint to be made union stop tap

See tap unit construction components of a tap that cannot be readily removed by unscrewing unrated system

See solar water heater — terms untrapped floor drain

See drain unvented solar water heater

See solar water heater unvented water heater

See water heater

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upstream vent

See vent

urinal sanitary plumbing fixture for the reception and flushing away of urine matching set single stall wall‐hung vacuum urinal urinal intended to operate with one or more matching vacuum interface and rinse valve(s) single stall urinal urinal for single person usage, wall mounted or at floor level slab urinal

urinal consisting of a flat impervious slab fixed on a wall, incorporating an integral channel trough urinal

urinal in the form of a trough for use by more than one person at the same time wall‐hung urinal

urinal fixed on the wall

urinal stall

urinal having a back curved on plan to form a stall for the user. It has with an integral floor . channel.

Note 1 to entry: When stall urinals are fixed in ranges, division slabs are provided between each stall.

vacuum conditionscondition situationscondition where the pressure is lower than atmospheric pressure buffer container for the temporary collection of wastewater on the atmospheric side of a vacuum interface valve soil fixture interface valve assembly which consists of a vacuum interface valve, rinse valve, vacuum controller and actuator, which forms part of the vacuum soil fixture vacuum accumulative lift sum of all increases in invert levels on the pathway for the drainage from any vacuum water closet or buffer to the vacuum station vacuum automatic interface unit

VAIU assembly consisting of a vacuum interface valve, buffer, sensor and vacuum controller vacuum batch volume volume of wastewater discharge from the buffer or water closet during one cycle of the vacuum interface valve vacuum branch pipeline section of pipeline that connects one or more vacuum water closet pans or vacuum automatic interface units or both to the vacuum main pipeline

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Note 1 to entry: A vacuum drainage system uses the pressure differential between ambient atmosphere (air) and sub atmospheric pressure (partial vacuum) to create movement of air, soil and wastewater (discharge) through the pipeline to a point of discharge into sanitary plumbing or drainage. ‐ Note 2 to entry: A vacuum drainage system should not be confused with a vacuum sewerage system which is used by a network utility operator to transport sewage from multiple properties. vacuum generator equipment installed in the vacuum station to generate and maintain the operational vacuum level within the vacuum drainage system vacuum interface valve valve that acts as an interface between the vacuum pressure in the vacuum pipeline and the atmospheric pressure at the fixture or buffer

Note 1 to entry: Interface valves automatically open when a predetermined volume of wastewater has collected in the buffer or is actuated by means of button activation. vacuum lift increase in invert levels of the wastewater pathway from a vacuum soil fixture or vacuum automatic interface unit to a vacuum branch or vacuum main pipeline vacuum lift pipe . vertical increase in elevation of the vacuum pipe invert level, achieved either with a vertical pipe configuration or a diagonal (typically 45°) configuration vacuum loading units

VLU unit of measurement of the load (air + wastewater) applied to a vacuum drainage system by various vacuum fixtures that are connected to the vacuum drainage system, which is used to size pipes for main lines and branch lines vacuum main pipeline section of pipeline that connects one or more vacuum soil fixtures or vacuum automatic interface units or both to the vacuum station

Note 1 to entry: Vacuum branch pipelines may be connected to the vacuum main pipeline. vacuum recovery time time taken, after the operation of a vacuum interface valve, for the vacuum level at the vacuum interface valve to be restored to its operational pressure range vacuum reforming pocket pipe assembly creating a low point within the vacuum pipeline to collect wastewater and reform the batch volume

Note 1 to entry: Vacuum reforming pockets are configured as an open or closed pocket. vacuum second stage lift lift in a vacuum branch line or vacuum main pipeline, distinguished from a reforming pocket in that the downstream end of the lift are to be vertical vacuum sensor

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Note 1 to entry: It may also incorporate vacuum wastewater collecting tank(s). vacuum station forwarding pump pump which may be installed at the vacuum station to deliver the wastewater from the vacuum system to a connection to the gravity plumbing or drainage system that discharges to the sewer vacuum water closet pan

VWC pan pan with a matching assembly of vacuum interface valve, rinse valve, controller, and actuator vacuum pump

See pump vacuum relief valve

See valve

valve

device for controlling the flow of a fluid, having an aperture that can be wholly or partially closed . by the movement (relative to the seating of a component in the form) of a plate or disc, a door or gate, a piston, a plug or a ball or flexing of a diaphragm

air admittance valve

component fitted to a plumbing system allowing air to enter the piping system, but not allowing air or gases out air valve

<1 > automatic valve for the discharge of air from, or the admission of air to, a water main, each containing a buoyant ball which seats itself to close an orifice

<2 > manually operated valve used to release air from a water pipe or fitting ball valve valveshut off device, having a ball that can be turned to move its port or ports(s) relative to the body seat ports, to control the flow of fluidliquid ‐ butterfly valve ‐ valve in which a disc is turned substantially through 90° from the closed to the open position on an axis transverse to that of the valve ports

check valve

See non‐return valve combination relief valve

valve that combines the features of temperature and pressure relief valves delayed action float valve ‐ float valve in which the action is delayed until the level of the liquid rises or falls by a predetermined amount diaphragm valve

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See mechanical backflow prevention device dual check valve

See mechanical backflow prevention device equilibrium float valve float valve designed so that the hydraulic forces on the closing plunger are in balance expansion control valve pressure activated valve that opens in response to an increase in pressure caused by the expansion of water during the normal heating cycle of the water heater, and whichthat is designed for installation‐ on the cold water supply to the water heater float valve ‐ valve for controlling the flow of a liquid into a cistern or other vessel, which that is operated by the movement of a float flush valve flusherette flushometer manually operated hydraulic device which discharges a predetermined quantity of water to fixtures for flushing purposes. Also called a flusherette or flushometer . foot valve non return valve fitted at the bottom of a pump suction pipe in order to retain the water in the pipe ‐ full way valve valve having the same internal bore as the connecting pipes, which that permits unrestricted flow gate valve valve that affords a straight through flow and in which a sliding gate is moved in its own plane at right angles to the flow globe valve screwdown valve having a partially spherical body with a horizontal inlet and a horizontal or vertical outlet. The valve sealing washer is attached to the valve spindle

Note 1 to entry: The valve sealing washer is attached to the valve spindle. hydraulically operated automatic control valve valve that operates by means of water pressure where the pressure, flow and level control functions of the valve are via externally plumbed hydraulic or solenoid pilot valves and can have an orifice plate for flow control inlet pressure control valve valve designed to control the maximum supply pressure of the cold water to the inlet of a water heater

Note 1 to entry: Typically, it may be a pressure reducing valve, pressure limiting valve or pressure ratio valve. ‐ ‐ isolating valve any valve for the purpose of isolating that isolates part of a water system from the remainder by withstanding water pressures both upstream and downstream of the isolating valve

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Note 2 to entry: It is generally constructed of copper alloy or plastics. kinetic air valve air valve of such a design that escaping air does not cause the ball to seal the orifice level control valve valve for controlling the flow into a tank or vessel. The valve that operates when the water level rises or falls to predetermined levels. It may be actuated directly by a float, or remotely by a float or pressure sensing equipment which detects changes in water level

Note 1 to entry: It may be actuated directly by a float or remotely by a float or pressure sensing equipment which detects‐ changes in water level. ‐ low pressure inlet valve gravity‐fed inlet valve inlet valve intended for use with water supply pressures of 30kPa or less when measured at the cistern inlet mechanical mixing valve mixing valve of the non thermostatic type, which that controls the temperature from the mixed water outlet ‐ mixing valve valve in which separate supplies of hotheated water and cold water are mixed together, either manually or automatically, to give a desired temperature from the mixed water outlet . non‐return valve valve to prevent reverse flow from the downstream section of a pipe to the section of pipe upstream of the valve pilot valve auxiliary valve operated hydraulically or electrically to activate the main valve plug valve valve consisting of an internal plug whichthat can be turned to move its port or ports(s) relative to the body seat ports to control the flow of fluid pressure‐limiting valve valve that limits the outlet pressure to the set pressure, within specified limits only, at inlet pressures above the set pressure pressure ratio valve valve that automatically reduces outlet water pressure to a specified ratio of its inlet pressure pressure‐reducing valve valve that automatically reduces the pressure to below a predetermined value on the downstream side of the valve pressure‐relief valve spring loaded or weight loaded valve for automatically controlling the build up of excessive pressure in pipework or fittings by means of a discharge to atmosphere ‐ ‐ ‐ pressure‐sustaining valve valve that automatically maintains a predetermined pressure on the upstream side of the valve reflux valve valve that prevents the reversal of flow by means of a flap or other mechanism

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Note 1 to entry: Reverse action float valves are used in large automatic flushing cisterns. right angle meter assembly ball valve below ground or above ground valve, having a lockable operating mechanism, for location adjustment to the property water meter ‐ ‐ Note 1 to entry: This valve may be installed with the copper riser at the time of the reticulation pipeline installation, laid over at 90° and buried instead of the termination ball valve.

Note 2 to entry: When buried, this valve shall be installed in the same manner as the termination ball valve complete with the open threaded end capped or plugged.

Note 3 to entry: This valve‐ may also be installed by a plumber at the time of property connection. rinse valve valve to supply rinse and replenish water to the pan or single stall wall hung urinal safety valve ‐ pressure relief valve fitted on, or close to, a boiler or unfired pressure vessel service connection ball valve ‐ below ground valve for insertion into the water reticulation pipeline tapping fixture to deliver water to the property service pipe which is shut only for maintenance, failure or disconnection of ‐ the downstream installation . service connection termination ball valve below ground valve located at the property boundary for connection to the property riser at the meter assembly ‐ Note 1 to entry: The valve is initially installed, charged, tested and left for the plumber in the closed position with any open threaded ends protected with a plastic cap or plug. scour valve valve fitted to a pipe to allow scouring (cleaning or flushing) of the pipe screwdown valve valve in which the disc is lifted from and lowered onto the body seat by a stem whose axis is perpendicular to the face of the body seat service valve valve for the isolation of a water heater or appliance. It that is fitted between the inlet header pipe and the appliance inlet and between the outlet of the water heater and the outlet header pipe single air valve air valve with a single chamber having either a small orifice or a large orifice sludge valve valve used for drawing off sludge from the bottom of a cistern or tank sluice valve solid sliding gate valve, usually key or wheel operated, used for waterworks purposes solenoid valve valve adapted for electrical remote control and actuated by a solenoid and plunger stop valve valve whichthat can be operated to stop the flow in a pipeline

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mixing valve that is temperature actuated and is used to temper a hotheated water supply with cold water to provide hotheated water at a lower temperature, e.g., 50°C, at one or more outlet fixtures outlets

EXAMPLE: 50 °C at each heated water outlet. thermostatic mixing valve mixing valve in which the temperature of the water from the mixed water outlet is automatically controlled by a thermostatic element/sensor to a preselected temperature that is suitable for direct contact with the skin

vacuum relief valve

pressure actuated valve that automatically opens to relieve vacuum conditions vented double check valve ‐ See mechanical backflow prevention device

. valve cover See cover valve key

See key valve opening percentage of valve stem travel from 0 % (fully closed) to 100 % (fully open) vandal proof tap

See tap lockshield velocity head

See head vulcanize adhere the seal to the body by high temperature and the use of an agent

vent pipe provided to limit the pressure fluctuations within the discharge pipe system or to encourage the passage of gases branch vent graded vent at any one floor level, interconnecting two or more individual trap vents or group vents

breather vent

DN 50 vent from the topmost junction of a sealed gully riser to atmosphere and extending a minimum of 300 mm above the lowest fixture discharging to the sealed gully

common vent

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Note 1 to entry: It is normally a vertical extension of a graded pipe or branch. cross ‐ vent vent interconnecting a stack and its relief vent downstream vent

drainage vent located on, or connected to, a drain discharging to a boundary trap educt vent

allowsterminal vent vent allowing air to exit from the drain ground vent allows air to enter the drain. Also called low‐level vent or induct vent vent allowing air to enter the drain group vent

vent connected to a branch to which unvented fixture discharge pipes are connected header vent

vent interconnectingthat interconnects the tops of two or more relief vents or stack vents high‐level vent vent that terminates above roof level induct vent

See ground vent . low‐level vent

See ground vent relief vent

vent installed in a stack below the lowest fixture stack vent

the extension of a discharge stack above the highest connected discharge pipe terminal vent

See educt vent trap vent

vent pipe venting an individual trap to the open air, or to a main or branch vent pipe for the prevention of lossto prevent floss of waterseal in the trap upstream vent

the vent installed adjacent to the upper end of a drain

vent cowl sanitary fitting for installation on the outlet end of a vent pipe to prevent the ingress of birds, rodents and foreign matter

vent pipe

See pipe vented pipe

See pipe vented double check valve

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See solar water heater vented water heater

See water heater venting

<1 > removal of foul gases from a sanitary installation to atmosphere by means of a vent pipe. <2 > allowing air to enter or escape from a soil or waste pipe for the purpose of preventing the breaking of the water seal in the trap

vertical

length of pipework which is vertical or makes an angle of less than 45° to the vertical vitreous china

strong, high grade ceramic material made from a mixture of clays and other materials vitreous enamel ‐ glazed coating fused on the metal surfaces for protection or decoration vitrified clay

ceramic ware used for sewer pipes and fittings, consisting of a vitrified clay body without a surface glaze

wall‐hung water closet

See water closet pan

wall thickness .

the thickness of the wall of a pipe, fitting or fixture, not including any lining or coating thickness of the wall measured at any point around the circumference of the pipe

Note 1 to entry: Commonly expressed as e . wall ‐hung urinal ᵧ See urinal wall‐hung water closet pan

See water closet pan washdown water closet pan

See water closet pan

waste the discharge from a waste fixture or appliance floor waste

grated inlet within a graded floor intended to drain the floor freestanding waste

waste pipe (not connected to a fixture),) to receive the discharge by a flexible hose connected from a water using appliance such as a dishwasher or washing machine

pop‐up waste

waste outlet fitted with a captive plug whichthat is seated in, or lifted clear of, the waste outlet by means of a manually operated lever safe waste pipe connected to a safe tray to convey any water collected

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waste arrestor See arrestor waste fixture

See fixture waste outlet

See outlet waste pipe

See pipe waste plug

See plug waste stack

See stack wastewater .

the spent or used water of a community or industry, which that contains dissolved and suspended matter water‐charged ground

ground subject to a high water table condition

‐ water closet ( WC) the compartment in which a WC pan is installed water closet (pan

WC) pan receptacle in the form of a bowl incorporating a water seal used in conjunction with a flushing device for the disposal of human wastes chemical water closet pan portable or fixed receptacle for human wastes in which chemicals are added, generally with disinfectant and deodorant properties

close coupled water closet pan

toilet suite with a flushing cistern that is directly coupled to the pan corbel water closet pan

WC pan projecting from a wall in order to support the fixture clear of the floor matching set vacuum pan vacuum pan intended to operate with one or more matching vacuum interface and rinse valve(s) pan with a rim

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floor mounted WC pan siphonic water closet pan ‐ WC pan in which the contents are removed by siphonic action induced by the flushing water wall‐hung water closet pan

sanitary fixture hung or cantilevered from a wall washdown water closet pan

WC pan from which the contents can be removed by a flush of water discharged into the pan from the flushing rim water closet (WC) cistern

See cistern water closet seat seat of wood, plastics or other impervious material (with or without a hinged cover) made to fit the top of a WC pan

water closet suite

sanitary fixture consisting of a WC pan, seat, cistern and any necessary flushpipeflush pipe water contamination test .

See test water cooling equipment

See cooling equipment water hammer

pressure surges in a closed pipe system as the result of a sudden change in velocity of the liquid, e.g., by a valve closure or pump start or stoppage

EXAMPLE Valve closure or pump start or stoppage. water‐hammer arrestor device to lessen or eliminate water hammer water heating appliance appliance that provides water heating function

‐ water heater appliance, designed to provide heated water auxiliary water heater secondary water heating device having a coil or container fitted to cooking or heating equipment or a flue assembly, fuelled by an uncontrolled heat source, and used to supplement a primary water heater or system . (Refers to uncontrolled thermal energy.)

Note 1 to entry: Refers to uncontrolled thermal energy. boiler vented water heater designed to provide boiling or near boiling water central heating water heater

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This is a draft document made available by Standards Australia to the registered licensee solely for review in providingAny other use public of the document comment. is prohibited. The registered licensee may print once only. Further copying, storage, distributionFull licence terms or are use available on network at https://www.standards.org.au/home/public-comment-document-licence-agreement is prohibited. Standards Australia Limited does not warrant or represent that the draft document is accurate or complete or that it should be relied on for any particular purpose. Any user of the document should rely on the final published version. DR AS/NZS 3500.0:2020 water heating system designed to heat the environment within a building by circulating heated water through a pipe network or other device cistern‐fed water heater vented water heater supplied with cold water from a static feed tank in which the level of the water is automatically maintained controlled pressure water heater unvented water heater, designed for direct connection to the water supply system but having a pressure temperature relief valve setting of less than 1.4 MPa. A pressure limiting valve or similar device is normally required to be installed on the cold water supply inlet ‐ ‐ Note 1 to entry: A pressure limiting valve or similar device is normally required to be installed on the cold water supply inlet. ‐ ‐ displacement water heater water heater in which cold water is fed into the container at or near the bottom, displacing but not mixing with the hotheated water as it is drawn off at or near the top falling level water heater non displacement water heater with the water surface being open to the atmosphere, in which hotheated water is drawn off at or near the bottom, with the level of the water falling as the hotheated‐ water is drawn off free outlet water heater vented water heater containing a permanently open outlet, from which heated water is discharged by displacement from a storage container, with the flow of water being controlled by means of a valve in the inlet water feed pipe heat exchange water heater . water heater in which potabledrinking water is heated by a heat transfer system that maintains a physical separation between a primary heat transfer fluid (which may be distilled, demineralized or potable water, specific refrigerants or chemicals) and the potable and the drinking water

Note 1 to entry: The primary heat transfer fluid may be distilled, demineralized or drinking water and may contain specific refrigerants or chemicals. instantaneous water heater unvented water heater in which the heat energy is applied only while the water flows to an outlet low pressure water heater water heater designed to work under a pressure not exceeding 12 m head and not having a free water surface, i.e., not a zero pressure water heater mains pressure water heater ‐ unvented water heater designed for direct connection to the water supply system and having a pressure temperature relief valve setting not exceeding 1.4 MPa pre‐heater water heater ‐ ‐ water heater not containing a means of supplementary heating and installed to preheat the cold water supply prior to its entry into any other type of household water heater (i.e., waste heat recovery from airconditioning condensers) ‐ Note 1 to entry: Waste heat recovery from air conditioning condensers may be utilized to pre heat household water heaters. ‐ ‐ reduced‐ pressure water heater displacement water heater designed to operate at a pressure below the normal water main inlet pressure and to be installed with a pressure control device fitted on the inlet side‐fed water heater

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Note 1 to entry: Refers to controlled thermal energy. temperature limited water heater 45 °C limited water heater water heater that limits the water temperature at the outlet from sanitary fixtures that are connected to the water heater and used primarily for personal hygiene purposes to no greater than 45 °C

50 °C limited water heater

Water heater that limits the water temperature at the outlet from sanitary fixtures that are connected to the water heater and used primarily for personal hygiene purposes to no greater than 50 °C thermostat controlled water heater water heater in which the heat energy is supplied in response to a thermostat temperature indication for water flow on the outlet side of the heater uncontrolled energy water heater . water heater in which the heat energy is provided by an uncontrolled heat source, e.g., a solids combustion heater

EXAMPLE Solids combustion heater. unvented water heater water heater in which no provision is made for a vent permanently open to atmosphere Valvevalve‐vented storage heater (

storage water heater) storage water heater in which the required venting to the atmosphere is controlled by a valve water heater water heater in which provision is made for a vent permanently open to atmosphere

water heater lining water resistant material applied to the internal surface of a water heater container and subject to direct contact with the water within the container ‐ water main

See main Watermark watermark level 1 minimum certification mark required under the National Plumbing Products Certification scheme for most products, which requires full third party certification watermark level 2 minimum certification mark required under the National Plumbing Products Certification scheme for low risk products, which requires type test certification

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See trap water seal water seal test

See test water service

that part of the cold water supply pipework from the water main up to and including the outlet valves at fixtures and appliances ‐ water service joint off‐take

the pipes and fittings used or intended to be used in connection with the supply of water from a joint water service to serve two or more dwelling units on the same property

water service pipe

See pipe water servicing weir water supply located along the top edge of the urinal wall and formed to release water to wash walls and wall ends water storage tank

See tank

water supply alternative water supply system . water not intended for human consumption that is sourced from locations other than a dedicated drinking water supply

EXAMPLE Rivers, bores, ground water, creeks, lakes or drinking water reclaimed after use. cold water water at a temperature of up to approximately 25 °C grey water reuse systems

system where grey water (wastewater but not soil or black water),) is collected, not treated and re used for acceptable purposes network utility operator’s supply ‐ drinking water provided by a water distributor through a reticulated water system recycled water

water that has been treated and provided for reuse by a water distributor through a reticulated water system

reticulated disinfected reclaimed water systems

system where soiled water is collected, treated to acceptable minimum standards of controlled disinfection and then reticulated to properties water supply systems (alternative)system water sourced from other than Network Utility Operators Supply, i.e., river, bores or ground water, creek lakes or drinking water reclaimed after use water sourced from a network utility operator’s supply

water table the normal level of ground water

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Note 2 to entry: It may incorporate a temperature ‐ ‐ control valve. ‐ watercourse depression where accumulated natural surface water flows WC pan

See water closet pan weep flange

See flange weir of trap

See trap welded joint

See joint wet well below ground chamber for the collection of sewage or wastewater and fitted with a pumping device to raise the contents to a suitable disposal point ‐ with‐pitch installation

See solar water heater — terms . work of sanitary drainage the construction, warranty statement by the manufacturer or supplier of a product stating that the product is suitable under specified conditions

Note 1 to entry: The conditions may be limits on water pressure, water temperature repetitive movement or flexation after installation, or any other operational circumstances. alteration , extension, disconnection, removal, maintenance, repair, renewal, ventilation, flushing or cleansing of any sanitary drain, connecting or intended to connect, directly or indirectly with any sewer of an authority work of draining work carried out in connection with the installation, alteration, extension, disconnection, removal, renewal, repair and maintenance of pipes, tanks, appliances, fixtures and fittings generally external to a building designed or intended to —

(a) receive the discharge from a sanitary plumbing system and convey the discharge to a sewer

or drain, or to a septic tank, or to a treatment facility and thence to a drain; or

(b) collect, convey or dispose of stormwater to a stormwater disposal system. work of gasfitting work carried out in connection with fuel gases and includes the installation, commissioning, alteration, extension, disconnection, removal, repair and maintenance of pipes, fittings, appliances, apparatus and associated ventilation lines and equipment designed to convey, mix, store, measure, protect, treat, modify, regulate the flow of, or utilize fuel gases, such as manufactured gas, liquefied petroleum gas, tempered liquefied petroleum gas, bio gas, methane, simulated natural gas and natural gas but does not include work on gas propulsion systems associated with automotive and marine craft ‐ work of liquefied petroleum gasfitting

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This is a draft document made available by Standards Australia to the registered licensee solely for review in providingAny other use public of the document comment. is prohibited. The registered licensee may print once only. Further copying, storage, distributionFull licence terms or are use available on network at https://www.standards.org.au/home/public-comment-document-licence-agreement is prohibited. Standards Australia Limited does not warrant or represent that the draft document is accurate or complete or that it should be relied on for any particular purpose. Any user of the document should rely on the final published version. DR AS/NZS 3500.0:2020 gasfitting in which the fuel gas conveyed and utilized is liquefied petroleum gas work of mechanical services plumbing work carried out in connection with heating, cooling or ventilation of buildings and includes the installation, commissioning, alteration, extension, disconnection, removal, renewal, repair and maintenance of ducts, pipes, flues, valves, regulators, registers, tanks, heating or cooling lines or surfaces, boilers, burners or coils or ancillary equipment used in heating, cooling and ventilation systems, and includes the connection of water to those systems, but does not include gasfitting or water plumbing work of roof plumbing work carried out in connection with the installation, alteration, renewal, repair and maintenance of roof coverings (other than non metallic tiles or slates, or malthoid, bitumenous or similar membrane sheeting) and roof water systems including gutters, flashings, valleys, ridging, weathering, rainwater piping and ‐downpipes designed to collect or convey water discharged from roofs work of sanitary plumbing work carried out in connection with the collection, conveyance or disposal of sewage, liquid trade wastes and other permitted discharges and includes the installation, alteration, extension, disconnection, removal, renewal, repair and maintenance of pipes, tanks, fittings, appliances and fixtures designed to receive, convey, store, treat, modify, or regulate the flow of sewage, liquid trade wastes or other permitted discharges and the ventilation of those pipes, tanks, fittings, fixtures and appliances work of sewerage the construction, alteration, extension, disconnection, removal, maintenance, repair, renewal,

ventilation, flushing or cleansing of any sewerage service pipes, or fittings or fixtures connecting . or intended to connect directly or indirectly with any sewer of an authority and includes work of sanitary plumbing and work of sanitary drainage work of stormwater drainage the construction, alteration, extension, disconnection, removal, maintenance, repair, renewal or cleansing of any stormwater drain, communicating or intended to communicate directly or indirectly, with any stormwater channel of an authority work of water plumbing work carried out in connection with the supply or conveyance of water and includes the installation, alteration, extension, disconnection, removal, renewal, repair and maintenance of pipes, tanks, fixtures, appliances and fittings designed to convey, store protect, treat, mix, measure, modify or regulate the flow of water, including hot water work of water supply the construction, alteration, extension, disconnection, removal, maintenance, repair, renewal or clearing of any pipes or fittings of any water service connecting or intended to connect, directly or indirectly with any water main of an authority working head

See head working pressure the maximum internal pressure that can be sustained by a pipeline component for its estimated useful life, under the anticipated working conditions

See pressure working temperature operating temperature of a pipework system which is influenced by either the temperature of the water being transported or the environmental conditions in gas installations

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wrenching flats

machined or cast flats on a fitting to allow use of a suitable wrench wrought

general term for products obtained by hot or cold plastic deformation processes such asof products

Note 1 to entry: Processes include extruding, hot rolling, cold rolling or drawing, either exclusively or in combination .

Y junction 45° junction See junction

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AS 2345, Dezincification resistance of copper alloys AS 2813, Solar water heaters — Method of test for thermal performance — Simulator method

AS 2984, Heavy mineral sand concentrates — Sampling

AS 4234, Solar water heaters — Domestic and heat pump — Calculation of energy consumption

AS/NZS 3718, Water supply — Metal bodied taps — Specified by performance

AS/NZS 4020, Testing of products for use in contact with drinking water ‐ AS/NZS 4445, Solar heating — Domestic water heating systems

AS/NZS 4445.1, Solar heating — Domestic water heating systems, Part 1: Performance rating procedure using indoor test methods

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Standards New Zealand The first national Standards organization was created in New Zealand in 1932. The New Zealand Standards Executive is established under the Standards and Accreditation Act 2015 and is the national body responsible for the production of Standards.

Australian/New Zealand Standards Under a Memorandum of Understanding between Standards Australia and Standards New . Zealand, Australian/New Zealand Standards are prepared by committees of experts from industry, governments, consumers and other sectors. The requirements or recommendations contained in published Standards are a consensus of the views of representative interests and also take account of comments received from other sources. They reflect the latest scientific and industry experience. Australian/New Zealand Standards are kept under continuous review after publication and are updated regularly to take account of changing technology.

International Involvement Standards Australia and Standards New Zealand are responsible for ensuring that the Australian and New Zealand viewpoints are considered in the formulation of international Standards and that the latest international experience is incorporated in national and Joint Standards. This role is vital in assisting local industry to compete in international markets. Both organizations are the national members of ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission).

Visit our websites www.standards.org.au www.standards.govt.nz This is a draft document made available by Standards Australia to the registered licensee solely for review in providingAny other use public of the document comment. is prohibited. The registered licensee may print once only. Further copying, storage, distributionFull licence terms or are use available on network at https://www.standards.org.au/home/public-comment-document-licence-agreement is prohibited. Standards Australia Limited does not warrant or represent that the draft document is accurate or complete or that it should be relied on for any particular purpose. Any user of the document should rely on the final published version. Australian/New Zealand Standards are prepared by a consensus process involving representatives nominated by organizations drawn from major interests associated with the subject. Australian/New Zealand Standards may be derived from existing industry Standards, from established international Standards and practices or may be developed within a Joint Technical committee.

Committee WS-014, Plumbing and Drainage, consisting of the following, is responsible for the issue of this draft: Association of Hydraulic Services Consultants Australia Australian Building Codes Board Australian Industry Group Australian Stainless Steel Development Association Backflow Prevention Association of Australia Engineers Australia Hydraulic Consultants Association Australasia International Copper Association Australia Master Plumbers Australia Ltd Master Plumbers, Gasfitters and Drainlayers New Zealand Ministry of Business, Innovation and Employment (NZ) Plastics Industry Pipe Association of Australia Ltd Plastics New Zealand Plumbers, Gasfitters and Drainlayers Board (NZ) Plumbing and Pipe Trades Employees Union Plumbing Distributors Association of New Zealand Plumbing Products Industry Group Inc The Institute of Plumbing Australia Water New Zealand Water Services Association of Australia Inc. .

GPO Box 476 Sydney NSW 2001 PO Box 1473 Wellington 6140 Phone (02) 9237 6000 Freephone 0800 782 632 Email [email protected] Phone (04) 498 5990 www.standards.org.au Email [email protected] www.standards.govt.nz

ISBN to be allocated on publication of the final document This is a draft document made available by Standards Australia to the registered licensee solely for review in providingAny other use public of the document comment. is prohibited. The registered licensee may print once only. Further copying, storage, distributionFull licence terms or are use available on network at https://www.standards.org.au/home/public-comment-document-licence-agreement is prohibited. Standards Australia Limited does not warrant or represent that the draft document is accurate or complete or that it should be relied on for any particular purpose. Any user of the document should rely on the final published version.

Standards Australia Standards Australia is an independent company, limited by guarantee, which prepares and publishes most of the voluntary technical and commercial standards used in Australia. These standards are developed through an open process of consultation and consensus, in which all interested parties are invited to participate. Through a Memorandum of Understanding with the Commonwealth government, Standards Australia is recognized as Australia’s peak national standards body.

Australian/New Zealand Standards Under a Memorandum of Understanding between Standards Australia and Standards New Zealand, Australian/New Zealand Standards are prepared by committees of experts from industry, governments, consumers and other sectors. The requirements or recommendations contained in published Standards are a consensus of the views of representative interests and also take account of comments received from other sources. They reflect the latest scientific and industry experience. Australian/New Zealand Standards are kept under continuous review after publication and are updated regularly to take account of changing technology.

Visit our web sites www.standards.org.au www.standards.govt.nz