Watts 957RPDA-DOSY-GPM 2 1/2 - Part of the 957RPDA Series ZC100F-3NH It features a bronze body

It features a bronze body with an extended inlet shank

This 1 1/2 to 2 inch cover replacement kit

Solid cast iron body for structural reliability

UPC - 098268931464

Watts 957RPDA-DOSY-GPM 2 1/2 - Part of the 957RPDA Series ZC100F-3NH It features a bronze bodyThis 2 1 2 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