What is a reduced-pressure principle assembly (RP)?
An RP is a mechanical backflow preventer that consists of two independently acting, spring-loaded checkvalves with a hydraulically operating, mechanically independent, spring-loaded pressure differential reliefvalve between the check valves and below the first checkvalve. It includes shutoff valves at each end of theassembly and is equipped with test cocks. An RP iseffective against backpressure backflow and backsiphonage and may be used to isolate health or non-health hazards.
An RP is a mechanical backflow preventer that consists of two independently acting, spring-loaded check valves with a hydraulically operating, mechanically independent, spring-loaded pressure differential relief valve between the check valves and below the first check valve. It includes shutoff valves at each end of the assembly and is equipped with test cocks. An RP is effective against back pressure and back siphonage and may be used to isolate health or non-health hazards. The device is designed for use under continuous pressure.
