Watts 757-OSYXPIV 8 - Part of the 757 Series geogrid seat O-ring

seat O-ring

The liner features a smooth black surface with no grooving

UPC - 098268017700

copper-lined steel

and is ADA compliant and heel proof

Watts 757-OSYXPIV 8 - Part of the 757 Series geogrid seat O-ringThis 8 inch lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of 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 hazards and from other contaminants found at the service line