Vacuum Breakers for Heating Systems and More!

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Hoffman Vacuum Breaker Barnes & Jones Hoffman Specialty. Prevents vacuum from occurring in steam heating equipment and Vacuum piping. Adjustable from 1⁄4" - 20" vacuum. Factory set at 2” vacuum. Breakers ■ ¾” NPT straight shank ■ 3” height ■ Maximum operating temperature 366°F For use on closed vessels ■ Maximum operating pressure 150 psig and piping systems to control induced vacuum Applications within safe limits. Barnes & Air/Heat Coils for Space Heating Process Jones Vacuum Breakers ■ ■ are simple, reliable devices that provide a positive means to Air Heater ■ Shell & Tube Heat Exchanger automatically relieve or "break" an unwanted vacuum ■ Make-Up Air Coils ■ Steam Boilers ■ Storage Heaters condition. The hex design provides for long service life and ■ Jacketed Kettles ■ Steam Main Zoning ■ and more! ease of installation. Bubble tight sealing is assured due to ■ Install horizontally, upright or upside down. the soft silicon O-ring and spring pressure against the valve. Model Pipe Order Vacuum to Open in Hg Applications ■ Air/Heat Coils for Space Heating ■ Process No. Size No. Air Heater Shell & Tube Heat Exchanger Make-Up Air ■ ■ 62 ¾” From 1/4” to 20” vacuum HK1045 Coils ■ Textile Dry Cans ■ Steam Boilers ■ Storage Heaters ■ Jacketed Kettles ■ Steam Main Zoning ■ One-Pipe Steam Non-Electric Thermostatic Valves and more! Johnson Vacuum Breaker and ■ May be installed horizontally, vertically or upside down. Backflow Preventer with Screen Model Pipe Order Vacuum to Open in PSI Johnson vacuum breakers with No. Size No. protective screens give positive VB3901 ⅛” BD2108 closing with a low breakaway 0.30 C VB3902 ¼” BD2107 point. Provides protection against both vacuum conditions VB3856 ½” BD2105 0.77 and backflow of liquid. VB3875 ¾” BD2106 B ■ All stainless steel with brass A pipe size collar. Can be installed upright, Durabla Heavy-Duty Vacuum ■ Rated to 300 psig; temp. to horizontally or upside down. Breaker and Check Valve 365º F. ■ Easily installed into pipe Provides protection from Vacuum and Backflow! Durabla all stainless steel check and vacuum breaker fittings or tank openings. valves are “made complete” with the reducing coupling. Vacuum Order Description A B C to Open, PSI No. Reducing Coupling Order both the ⅜” pipe size 1½” 1⅛” 9/16” 0.32 JO1005 Basic Valve and ½” pipe size 1¾” 1⅜” 11/16” 0.78 JO1010 the corresponding Black Malleable Iron ¾” pipe size 2⅛” 1⅝” 13/16” 1.10 JO1015 Reducing Coupling.

Screw the reducing coupling onto the Spirax Sarco Vacuum Breaker valve to create the complete unit. The Brass body VB14 has a maximum operating pressure of Basic Valve Reducing Coupling 210 psig; max. temp. to 500º F.

Model Pipe Vacuum Order Order to Open Pipe Size The Stainless Steel body VB21 No. Size PSI No. No. has a maximum operating ¼” .60 DP1005 ¼” x 1” PM1285 pressure of 304 psig; max. temp. to 752º F. ⅜” .60 DP1010 ⅜” x 1” PM1290 The drain connection on both ½” .60 DP1015 ½” x 1” PM1295 models are ⅛” pipe; the system ¾” .45 DP1020 ¾” x 1½” PM1325 connection is ½” pipe. Brass or Stainless Steel BSS 1” .38 DP1025 1” x 2” PM1350 Model System Order Material Height 1¼” .20 DP1030 1¼” x 2½” PM1364 No. Connection No. 1½” .14 DP1035 1½”x 3” PM1370 VB14 ½” NPT Brass 2.2” SG1300 2” .15 DP1040 2” x 4” PM1385 VB21 ½” NPT Stainless Steel 2.0” SG1305

Watts 9D Backflow Preventers with Atmospheric Vent for Boilers

Used on boilers to prevent backflow of contaminated boiler water and meet local boiler code requirements.

■ These Watts 9D Backflow Preventers provide positive protection against both back pressure and back siphonage in small supply lines to boilers.

■ All bronze construction with stainless steel internal parts.

■ Unit measures 5” end-to-end.

■ REPAIR KITS include the wearable parts of the valve.

Complete Model Pipe Repair Kit Description Valve ■ Installed either vertically or horizontally. No. Size Order No. Order No. ■ For the best system performance, install on 1/2” Backflow Preventer with Vent WC1025 WD1030 the fresh water feed line before any pressure 9D regulators. 3/4” Backflow Preventer with Vent WC1030 WD1030 Watts N9 Dual Check Watts 7 Dual Check Vacuum Breaker Backflow Preventer Series N9 Dual Check Vacuum Breakers Series 7 Dual Check Valves prevent the prevent the reverse flow of polluted water reverse flow of polluted water from from entering into the potable water supply. entering into the drinking water supply at It consists of a brass body construction with the service entrance or at individual an atmospheric vent, and NPT female inlet outlets. Bronze body construction, with and outlet connections. Designed for non- two check valves, and stainless steel health hazard, continuous pressure springs. Designed for non-health hazard applications. 2⅜” overall length. residential water system containment, 2⅜” overall ■ Maximum Working Pressure: 125psi. continuous pressure applications. length Installed immediately downstream of the residential water meter, in a vertical or Model Pipe Order 4⅜” overall Description No. Size No. length horizontal position. 4⅜” overall length. ■ Minimum Working Pressure: 10psi, 1/4” Watts N9 Dual Check WC1015 ■ Maximum Working Pressure: 150psi. N9 Vacuum Breaker Assembly 3/8” WC1020 Model Pipe Order Description No. Size No. Watts N36 Vacuum Breaker 7 1” No. 7 Dual Check Backflow WC1040 N36 Water Service Vacuum Relief Valves used in water heater/tank applications to Watts NF8 Vacuum Breaker automatically allow air to enter into the for Hoses and Hydrants piping system to prevent vacuum NF8 Hose Connection Vacuum Breakers conditions that could siphon the water designed for wall hydrants, & service hoses. from the system. Brass body construction. Prevents the reverse flow of polluted water Suitable for low pressure steam and water from entering into the potable water supply. service. Ideal for use in domestic water Brass body construction, stainless steel heaters and supply tanks, table top heaters, jacketed working parts, a rubber diaphragm and steam kettles, unit heaters, low pressure steam systems, disc, and a draining stem. Permits manual and steam coil heaters. Max. Working Pressure: 200psi, draining for freezing conditions. Maximum Max. Steam Pressure: 15psi. Pressure:125psi. Model Size Description Order No. 1/2” WC1445 Model No. Pipe Size Description Order No. N36 N36 Vacuum Breaker 3/4” WC1450 NF8 3/4” Vacuum Breaker WC1115