Pressure Vacuum Breakers - Faucet Depot

1 ES-F-765S P E C I F I C A T I O N S H E E T febco product specifications in customary units and metric are approximate and are provided for reference only. For precise mea-surements, please contact febco . febco reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on febco products previously or subse-quently Name Contractor Job Location Approval Engineer Contractor s No.

2 Approval Representative Series 765 Pressure Vacuum BreakersSize: 1 2" - 2" (15mm - 50mm) The febco Series 765 Pressure Vacuum Breakers are used to protect against health hazard and non-health hazard backsiphonage conditions in industrial plants, cooling towers laboratories, laundries, swimming pools and lawn sprinkler All bronze body for durability. One check valve and an air opening port in one assembly. Lightweight poppet seals air opening under minimum flow conditions. Simple service procedures. All internal parts serviceable in line from the top of the unit.

3 Designed for minimum head loss. Engineered plastic bonnet protect valve bodies from freeze damage. Optional union end ball valves for easy removal and ultimate freeze protection. End Connections NPT ANSI/ASME febco 765 PVB is designed to be installed to provide protection against backsiphonage of toxic or non-toxic liquids. It consists of a spring loaded check valve which closes tightly when the Pressure in the assembly drops below 1psi or when zero flow occurs, plus, an air relief valve that opens to break a siphon when the Pressure in the assembly drops to Vacuum Breaker assemblies shall be in stalled to withstand Pressure for long periods and to prevent backflow of contaminated water into the potable water system in backsiphonage conditions.

4 The Pressure Vacuum Breaker assembly shall consist of a single spring loaded check valve which closes tightly when water flow through the assembly drops to zero, and a single air relief valve that opens to break the siphon when Pressure drops to 1psi. The assembly shall include two resilient seated shut-offs and two resilient seated test cocks, considered integral to the assembly. Assemblies must be factory backflow tested. The check valve and air inlet valve must be constructed to allow in-line servicing of the assembly. The valve body shall be constructed of bronze. The check, pop-pet and bonnet assembly shall be constructed of engineered plastic to protect the valve body from freeze Vacuum Breaker assemblies shall be installed a minimum of 12" (300mm) above the highest downstream outlet, and the highest point in the downstream piping.

5 The assembly shall be rated to 150psi working Pressure and water temperature from 32 F to 140 F. The assembly shall meet the specifications of the USC FCCC & HR Vacuum Breaker assemblies shall be febco Series 765 or prior approved Standards Approved by the Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern assemblies are used to protect against health hazard and non-health hazard backsiphonage conditions in industrial plants, cooling towers labora-tories, laundries, swimming pools and lawn sprinkler InstallationPressure Vacuum Breaker assemblies should be installed at least 12" (300mm) above the highest piping and outlet downstream of the assembly to preclude backpressure.

6 Assemblies should be installed so they are easily accessible for maintenance, periodic testing, and where dis-charge will not be objectionable. They should be protected from freezing. If the assemblies are subject to freezing temperatures, the freeze protection procedures outlined in "Service Instruction Freeze Protection Model 765" must be followed. Assemblies must not be installed where backpressure could discharge Pressure shall be maintained above on 1 2" - 11 4" (15 - 32mm) sizes and on 11 2"- 2" (40 - 50mm) sizes to insure seating of the spring loaded air inlet water expansion and/or water hammer down stream of the back-flow preventer can cause Pressure increases.

7 Excessive Pressure should be eliminated to avoid possible damage to the system and U12" (300mm) above the highest downstream outlet and the highest point in the downstream (DN)DimeNsioNsWeightAA1 (union)BB1 (union)CDD1 (union)EE1 (union) 21561 4159717863 417271 219721 26433 49541 211 441 23 42061 216573 8187717877 820021 264410247 812441 211 453 312583 422295 82459229915 16252410251 413363 161576152615 43291 4235101 42601025411279410261 415971 4184717882037. 240113 4299127 8327111 2292125 832161 216571 418483 821373 419783 2318133 4349121 43 11131 234361 2165820391 423581 221693 5 Note: Weights shown do not include union end ball valves and are approximate.

8 Dimensions shown are nominal, allowance must be made for normal manufacturing Weights Size: 1 2" - 2" (15 - 50mm) Pressure TemperatureMax. Working Pressure : 150psi ( bar)Hydrostatic Test Press: 300psi ( bar)Temperature Range: 32 F to 140 F (0 C to 60 C)MaterialsMain Valve Body: BronzeElastomers: NitrileModels Union End Ball ValvesCapacity3 4" (20mm) kPa psi 103 15 69 10 34 5 0 0 heaDloss1 2" (15mm) kPa psi 103 15 69 10 34 5 0 0 0 2 4 6 8 10 12 gpm 0 8 15 23 30 38 45 lpm 5 10 fps mpsheaDloss 0 5 10 15 20 25 30 gpm 0 19 38 57 76 95 114 lpm 5 10 15 fps mps1" (25mm) kPa psi 103 15 69 10 34 5 0 0 heaDloss 0 10 20 30 40 50 60 gpm 0 38 76 114 151 190 227 lpm 5 10 15 20 fps mps11 4" (32mm) kPa psi 103 15 69 10 34 5 0 0 0 20 40 60 80 gpm 0 76 151 227 304 lpm 5 10 15 fps mpsheaDloss11 2" (40mm)

9 KPa psi 103 15 69 10 34 5 0 0 heaDloss 0 20 40 60 80 100 120 gpm 0 76 151 227 304 379 454 lpm 5 10 15 fps mps2" (50mm) kPa psi 103 15 69 10 34 5 0 0 heaDloss 0 40 80 120 160 gpm 0 151 304 454 606 lpm 5 10 15 fps mpsUSA: 4381 N. Brawley Ste. 102 Fresno, CA 93722 Tel. (559) 441-5300 Fax: (559) 441-5301 : 5435 North Service Rd. Burlington, ONT. L7L 5H7 Tel. (905) 332-4090 Fax: (905) 332-7068 0651 2009 FEBCOA Watts Water Technologies CompanyBB1 Caa1DD1ee1