Watts LF957NRPDA-DOSY-CFM 4 - Part of the LF957RPDA Series Drain Fitting 40 Standard Reduced Pressure Setting-PSI

40 Standard Reduced Pressure Setting-PSI 50 Valve Style Standard UPC - 098268102857

slot with integrated rail is heel-proof and ADA compliant

It is designed to prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage

This lead free automatic reseating temperature and pressure relief valve has a 1 inch NPT female inlet

Watts LF957NRPDA-DOSY-CFM 4 - Part of the LF957RPDA Series Drain Fitting 40 Standard Reduced Pressure Setting-PSIThis 4 inch lead free N pattern 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