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This 3/4 inch anti-siphon pressure vacuum breaker backflow preventer helps prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage
Integral double-wall trap in the top drain prevents sewer gas escape and supports building safety
water-carrying equipment
ZM415SH-2NL
Watts 007-LF 1/2 - Part of the 007 Series HDPE This 3/4 inch anti-siphon pressureThis 1 2 inch double check valve backflow preventer assembly is designed to prevent the backflow of polluted water from entering into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. Its compact modular design facilitates easy maintenance with a single access cover for in line repairs. It is ideal for protection in continuous pressure piping applications and