ASSE (Plumbing) 1047-2011
- Performance Requirements for Reduced Pressure Detector Fire Protection Backflow Prevention Assemblies
- standard by American Society of Sanitary Engineering, 08/17/2011
- Publisher: ASSE(Plumbing)
$23.00$45.00
This standards applies to Reduced Pressure Detector Assemblies (RPDA) and Reduced Pressure Detector Assemblies Type II (RPDA-II). The RPDA and RPDA-II assemblies consist of two (2) independently acting check valves, internally force loaded to a normally closed position, and separated by an intermediate chamber (or zone) in which there is a hydraulically operated relief means for venting to atmosphere, internally force loaded to a normally open position. These assemblies are designed to operate under continuous pressure conditions. The assembly shall include two (2) properly located, tightly closing shut-off valves and properly located test cocks. The assemblies also include a bypass line which provides a visual or audible indication of system leakage or unauthorized use of water. This standard also applies to Manifold Reduced Pressure Detector Assemblies consisting of two (2) or more complete RPDA or RPDA-II assemblies in parallel.
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