Watts 957NRPDA-OSY-LM 6 - Part of the 957RPDA Series ZC100F-8NH It is easy to apply

It is easy to apply and retains the original appearance of pavers

This 1 IN lead free dual check valve backflow preventer helps prevent the reverse flow of polluted water from residential fire sprinkler systems from entering into the potable water supply

This kit consists of a seat and seat O-ring

This cover repair kit is used to repair or replace the cover on a 2 inch lead free reduced pressure zone assembly used to prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage and or backpressure

Watts 957NRPDA-OSY-LM 6 - Part of the 957RPDA Series ZC100F-8NH It is easy to applyThis 6 inch reduced pressure detector backflow preventer assembly is designed to 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. Extremely compact and lighter than traditional designs it is approved for horizontal N pattern installation.