Watts 957Z-RPDA-OSY-CFM 4" Reduced Pressure Detector Assembly

Watts 957ZRPDA 4 inch cubic feet meter reduced pressure detector 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. The assembly has a stainless steel body with a quick access sleeve, torsion spring check valves, resilient seated gate valves with outside stem and yoke, test cocks, corrosive resistant bottom mounted pressure relief valve.