Watts 774-OSY-GXG 4 - Part of the 774 Series ZA100F-3NH and weatherproofing

and weatherproofing

dual weepholes for effective perimeter drainage

prevents heel catch

1″ total depth

UPC - 098268576290

Watts 774-OSY-GXG 4 - Part of the 774 Series ZA100F-3NH and weatherproofingThis 4 inch lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of contaminated 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. It is ideal for protection at cross connections identified as non health hazard applications and from other contaminants