Febco LF767FR 1 1/2" Pressure Vacuum Breaker

Febco LF767FR lead free freeze resistant pressure vacuum breaker backflow preventer prevents the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It consists of lead free body construction, silicone rubber check valve disc, plastic check valve seat, stainless steel springs, a bonnet with silicone rubber O-ring seal, a lightweight plastic disc float, a built-in relief valve to protect the internal components and the body from freezing, lever handle shutoffs, and test cocks for winterization draining.