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Integral double-wall trap in the top drain prevents sewer gas escape and supports building safety
while draining excess surface water from hardscapes
deep (the 8 in
UPC - 098268432626
Watts 957N-QT 3 - Part of the 957 Series mainline-siltfence Integral double-wall trap in theThis 3 inch reduced pressure zone assembly backflow preventer helps prevent the reverse flow of fire protection substances and water of non potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. This extremely compact and lighter than a traditional designed assembly is approved for horizontal N pattern installation