Deringer 50-BFG-CFM 3" Reduced Pressure Valve Assembly

Deringer 50 is designed to prevent non-health hazard pollutants from entering the potable water supply system caused by backpressure and/or backsiphonage. Deringer 50 has butterfly shutoff valves for a short lay length, and dual-action checks for high performance at low and high-flow rates. The cubic foot meter bypass is used to monitor unauthorized water usage and is primarily required on fire sprinkler systems.