Reduced pressure backflow prevention assembly definition

Reduced pressure backflow prevention assembly or “RP assembly” or “RPBA” means an assembly containing two independently acting approved check valves together with a hydraulically-operated, mechanically independent pressure differential relief valve located between the check valves and at the same time below the first check valve.
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Reduced pressure backflow prevention assembly means two independently acting approved check valves together with a hydraulically operating, mechanically independent pressure differential relief valve located between the check valves and below the first check valve. These units are located between two tightly closing resilient-seated shutoff valves as an assembly and are equipped with properly located resilient-seated test cocks.
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