Febco 710A Atmospheric Vacuum Breaker 2 in.

This 2 inch atmospheric vacuum breaker backflow preventer assures positive protection against backsiphonage of impure water from getting into the main supply in the event that pressure loss causes vacuum conditions. It is ideal for hose bibs, chemical vats, X-ray tanks, turf irrigation systems, and laboratory sinks. It features a bronze body and lightweight plastic poppets. The maximum working pressure is 150 psi (10.3 bar) at water temperatures of 32 to 110 degrees F (zero to 43 degrees C).