Ames M400-OSY 2 1/2" SS Reduced Pressure Zone Assembly

Ames M400 lead free reduced pressure zone backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and water of non-potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure. The assembly has a stainless steel body with a quick access sleeve, torsion spring check modules, resilient seated gate valves with outside stem and yoke, test cocks, and a bottom mounted pressure relief valve.