Watts 757N-OSY 3 - Part of the 757 Series chat-hdpe roof-top installations

roof-top installations

UPC - 098268565478

NPT inlet and outlet connections with Viega ProPress® Adaptors

For larger projects

and a steel handwheel

Watts 757N-OSY 3 - Part of the 757 Series chat-hdpe roof-top installationsThis 3 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 contaminated water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and contaminated water authority requirements. It is ideal for protection at cross connections identified as non health hazards and from other