Watts 757-NRS-GXG 4 - Part of the 757 Series ZC100F-2NH LF340 (French)

LF340 (French)

Built for both commercial and residential applications

This boiler pressure relief valve is used in hot water heating and domestic supply boiler applications to protect against excessive pressures on all types of hot water heating supply boiler equipment

No-hub outlet (standard) with multiple pipe size options available

and easy to clean lining to your walls

Watts 757-NRS-GXG 4 - Part of the 757 Series ZC100F-2NH LF340 (French)This 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