Deringer 50G-OSY-CFM 2 1/2" Reduced Pressure Valve Assembly

Deringer 50G is designed to prevent non-health hazard pollutants from entering the potable water supply system caused by backpressure and/or backsiphonage. Deringer 50G has OSY valves and dual-action checks. The cubic foot meter bypass is used to monitor unauthorized water usage and is primarily required on fire sprinkler systems.