Watts 757N-OSY 3 - Part of the 757 Series chat-hdpe ZN400N-4IG

ZN400N-4IG

Corrosion-Resistant ConstructionBuilt from rugged materials and finishes to resist weathering

roof-top installations

NPT inlet and outlet connections with Viega ProPress® Adaptors

For larger projects

Watts 757N-OSY 3 - Part of the 757 Series chat-hdpe ZN400N-4IGThis 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