Watts 957ZRPDA-BFG-GPM 4 - Part of the 957RPDA Series nwgf Designed to serve as both

Designed to serve as both primary and emergency overflow protection in one unit

Features Bronze body for durability

UPC - 098268394887

stainless steel non-rising stem and cast iron handwheel

Z627-4NH-DG

Watts 957ZRPDA-BFG-GPM 4 - Part of the 957RPDA Series nwgf Designed to serve as bothThis 4 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 Z pattern installation.