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This 1 1/2 IN dual check valve backflow preventer is designed to prevent the reverse flow of polluted water from residential fire sprinkler systems from entering into the potable water supply
10 IN No hub outlet
50 Minimum Temperature-Fahrenheit 33 Outlet Connection Size 1 IN Outlet Connection Type Female Threaded Outlet Thread Type NPT Part Number 0298536 Series LF223 Standard Reduced Pressure Setting-BAR 3
It consists of a bronze body
Watts 757N-OSY 6 - Part of the 757 Series geogrid This 1 1/2 IN dualThis 6 inch lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of contaminated water of non potable quality from being pumped or siphoned into the potable contaminated water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and contaminated water authority requirements. It is ideal for protection at cross connections identified as non health hazards and from other
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