- All bronze body for durability
- One check valve and an air opening port in
- Lightweight poppet seals air opening under minimum flow conditions.
- Simple service procedures. All internal parts serviceable in line from the
top of the unit.
- Designed for minimum head loss.
- Engineered plastic bonnet protect valve bodies from freeze damage.
- Optional union end ball valves for easy removal and ultimate
- End Connections – NPT ANSI/ASME B1.20.1
Pressure Vacuum Breaker assemblies shall be installed to withstand pressure for
long periods and to prevent backflow of contaminated water into the potable water
system in backsiphonage conditions. 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, poppet and bonnet assembly shall be
constructed of engineered plastic to protect the valve body from freeze damage.
Pressure Vacuum Breaker assemblies shall be installed a minimum of
12" (300mm) above the highest downstream outlet, and the highest point in the
downstream piping. 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 Manual.
Pressure Vacuum Breaker assemblies shall be FEBCO Series 765 or prior approved
- Main Valve Body: Bronze
- Elastomers: Nitrile
Pressure – Temperature
- Max. Working Pressure: 150psi (10.3 bar)
- Hydrostatic Test Press: 300psi (20.7 bar)
- Temperature Range: 32°F to 140°F (0°C to 60°C)
- Union End Ball Valves
- Bronze Bonnet, 11⁄2" & 2" (40 & 50mm)
Approvals – Standards
- Approved by the Foundation for Cross-Connection Control
and Hydraulic Research at the University of Southern