Section 232215 - Steam and Condensate Specialties

This master should be used by designers working on Port of Portland construction projects and by designers working for PDX tenants (“Tenants”). Usage notes highlight a few specific editing choices, however the entire section should be evaluated and edited to fit specific project needs.

SECTION 232215 - STEAM AND CONDENSATE SPECIALTIES

PART 1 - GENERAL

0.1 DESCRIPTION

A. This section describes steam and condensate specialties, including condensate pumps, traps, safety valves, pressure reducing valves, drip pan elbows, vacuum breakers, flow meters, and accessories.

0.2 RELATED WORK SPECIFIED ELSEWHERE

A. Section 230553, Identification for HVAC Piping and Equipment

B. Section 230719, HVAC Insulation

0.3 REFERENCES

A. ASME: American Society of Mechanical Engineers 1. ASME BPVC Section I: Rules for Construction of Power Boilers 2. ASME BPVC Section VIII: Boiler and Pressure Vessel Code, Pressure Vessels

0.4 SUBMITTALS

A. For each item specified herein, submit product/material data; shop drawings; operation and maintenance data; as-constructed data; installation, startup, and testing manuals; operation and maintenance manuals; and as-constructed drawings. 1. Include performance curves, motor data, operating weights, and pressure ratings with product data.

Use only if Commissioning Section 019100 is included in the project manual.

B. For items specified below, submit commissioning plans and schedules; checkout, startup, operational, functional and final acceptance test plans, procedures, checklists, and reports; systems manuals; and operation and maintenance training plans. 1. Condensate pump and receiver set. 2. Steam traps. 3. Steam safety valves. 4. Steam pressure reducing valves. 5. Vacuum breakers. 6. Steam and condensate vortex flow meter.

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0.1 CONDENSATE PUMP AND RECEIVER SET

A. Acceptable Manufacturers: Aurora 220 Series, Hoffman HC, Federal CCV, Domestic CC, Paco GR, Skidmore 10M, Shipco, Dunham Bush, or equal.

B. Description: Steam condensate pump and receiver set consisting of duplex pumps and motors, cast iron receiver, and control assembly; factory assembled and prewired.

C. Pumps: Close coupled vertical flange mounted pumps with cast iron casing, bronze impeller and case wearing ring, mechanical seal with 316 stainless steel parts. Size each pump for the capacity scheduled.

D. Receiver: Cast iron construction rated at 5 psig maximum internal pressure with thermometer, site glass with shut-off cocks, inlet connection with strainer and maintenance valve, vent and drain connections, capacity as scheduled.

E. Controls and Electrical: Provide combination float switch and alternator assembly. Provide magnetic starters with overload and under voltage protection, and H-O-As, control circuit transformer, all mounted in a NEMA 1 enclosure and prewired to pump motors and float switch. Single point electrical connection.

0.2 STEAM TRAPS

A. Acceptable Manufacturers: CRS Steam, or pre-bid approved equal.

B. Fixed Orifice Steam Traps: Stainless steel body, continuous flow tubular outlet to provide continuous drainage using no moving parts. Provide stainless steel screen over inlet opening. Rated 150 psig saturated steam. SteamLoc, by CRS Steam, or pre-bid approved equal.

0.3 STEAM SAFETY VALVES

A. Acceptable Manufacturers: Kunkle, Consolidated, or pre-bid approved equal.

B. Description: Conforming to ASME Section I or Section VIII as required for application. Cast iron body, stainless steel or bronze trim, enclosed spring, lifting levers.

C. Sizing: Size in accordance with ASME code for ratings of 90 percent of actual capacity at 10 percent accumulation. Valves shall have full capacities of equipment served unless otherwise indicated, Kunkle Model No. 252.

0.4 STEAM PRESSURE REDUCING VALVES

A. Acceptable Manufacturers: Spence, Sarco, Kaye and MacDonald, Armstrong, Cash Acme, Watson McDaniel, or pre-bid approved equal.

STEAM AND CONDENSATE SPECIALTIES 4/4/2018 232215-2 D:\Docs\2017-12-14\0a4f3abcb839e78b74449897a9a0723f.doc B. Description: Cast iron body, stainless steel spring and working parts, screwed for 2-inch and smaller, flanged for 2-1/2-inch and larger, 250 psi, self-operated, pilot-controlled diaphragm type, capacity and pressure reduction as indicated, Sarco 25P.

C. Sizing: Size valves in accordance with the manufacturer’s instructions for capacities and pressure. Critical velocities shall not be exceeded.

0.5 DRIP PAN ELBOW

A. Acceptable Manufacturers: Kunkle, Consolidated, Grinnell, Sarco, or equal.

B. Description: Cast iron, horizontal inlet, vertical discharge, size to match safety valve, Kunkle Model No. 299.

0.6 VACUUM BREAKERS

A. Acceptable Manufacturers: Hoffman No. 62, Johnson Corporation, Spirax/Sarco, or equal.

B. Description: Steam type set at 2-inch mercury vacuum (adjustable 1/4-inch to 20-inch mercury), 1/2-inch IPS.

0.7 STEAM AND CONDENSATE VORTEX FLOW METERS

A. Acceptable Manufacturers: Yokogawa Model YF100, or pre-bid approved equal.

B. Venturi: No moving parts vortex generating body, 150 psi, integral type converter with totalizer, 0.2 percent of reading repeatable, flow rate shall match design flow rate, meter shall be rated for steam and condensate. Accuracy shall be 0.8 percent liquid and 1.5 percent steam.

PART 3 - EXECUTION

0.1 CONDENSATE PUMP AND RECEIVER SET INSTALLATION

A. Install unit in accordance with the manufacturer’s instructions.

B. Locate unit and route piping so that condensate drains to receiver and receiver can be drained.

C. Route vent to approved location without water traps.

D. Provide union, shutoff valve, and check valve on each pump discharge.

E. Pipe overflow to drain. Trap overflow with minimum 2-foot deep trap.

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A. Install steam traps on the return side of equipment utilizing steam, at end of steam mains, and at low points in steam.

B. Install gate valves, strainer upstream of trap, 3-valve bypass, check valve, and unions.

0.3 STEAM SAFETY VALVE INSTALLATION

A. Pipe discharge of safety valve full line size to outside the building. Size discharge lines in accordance with ASME codes.

0.4 STEAM PRESSURE REDUCING VALVE INSTALLATION

A. Provide globe valve bypass, gate valves, strainers, reducers, traps, safety valves, and pressure gauges for a complete pressure reducing station.

B. Valves, strainers, etc. shall be line size with concentric pipe reducers at the pressure reducing valve. Bypassed valve and line above or to the side of the main assembly but not below. Position the strainer on its side.

C. Pressure sensing line to be located a minimum of 15 diameters of straight pipe uninterrupted by fittings downstream of reducing valve.

0.5 DRIP PAN ELBOW

A. Install within 18 inches of safety valve outlet. Discharge risers piping shall be supported independently of safety valve. Pipe drain connections to floor drain.

0.6 VACUUM BREAKERS

A. Install in accordance with the manufacturer’s instructions.

B. Provide vacuum breakers on steam heating coils and on steam to water heat exchangers.

0.7 STEAM AND CONDENSATE VORTEX FLOW METERS

A. Install in accordance with the manufacturer’s instructions, with sufficient upstream and downstream straight pipe to obtain accurate readings.

STEAM AND CONDENSATE SPECIALTIES 4/4/2018 232215-4 D:\Docs\2017-12-14\0a4f3abcb839e78b74449897a9a0723f.doc Choose one of the following two articles. Use Commissioning if Section 019100 is included in the project manual; otherwise use Testing.

0.8 COMMISSIONING

A. Commission the following items: 1. Condensate pump and receiver set. 2. Steam traps. 3. Steam safety valves. 4. Steam pressure reducing valves. 5. Vacuum breakers. 6. Steam and condensate flow meters.

0.9 TESTING

A. Check out, start up, and test the following items: 1. Condensate pump and receiver set. 2. Steam traps. 3. Steam safety valves. 4. Steam pressure reducing valves. 5. Vacuum breakers. 6. Steam and condensate flow meters.

END OF SECTION 232215

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