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ZN415M-3NL-SB
dual weepholes for double-drainage performance
a tee handle
Z415N-3IG-7N
Watts 757DCDA-BFG-LM 3 - Part of the 757DCDA Series mainline-adatile ZN415M-3NL-SBThis 3 IN double check detector backflow preventer assembly prevents the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. Its compact housing consists of two independently operating tri link check valves, two UL FM butterfly shutoff valves, and four test cocks. It features a stainless steel housing and sleeve and is 70 percent lighter than traditional designs. It is designed for non health
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