Watts 774-DNRS 4 - Part of the 774 Series ZC100F-2NH bimetal spiral spring extended temperature

bimetal spiral spring extended temperature element and copper alloy bourdon tube pressure element with ASME Type B accuracy

This 1 inch anti-siphon vacuum breaker backflow preventer helps prevent the backsiphonage of contaminated water from entering into the potable water supply

and soldered end connections

Features Eliminates the need for thrust blocks or other restraints at the point of installation

ADA Mats for Concrete are an ideal wet-set concrete detectable warning solution

Watts 774-DNRS 4 - Part of the 774 Series ZC100F-2NH bimetal spiral spring extended temperatureThis 4 inch short lay length 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 under continuous pressure service and protection at cross connections identified as non health hazards and