Watts 757-OSY-GXG 4 - Part of the 757 Series ZA100F-4NH UPC - 098268559668

UPC - 098268559668

2 Cover O-rings Kit Type Complete Rubber Parts Kit Lead Free YES Product Group BACKFLOW KITS UPC - 098268399738

ZN400E-3NH

UPC - 098268633771

This pressure relief valve has a 1 1/4 inch NPTF female inlet and outlet and a 90 psi pressure relief setpoint

Watts 757-OSY-GXG 4 - Part of the 757 Series ZA100F-4NH UPC - 098268559668This 4 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