Watts 757N-BFG 2 1/2 - Part of the 757 Series mainline-siltfence deck flange

deck flange

Z450-3NH-6B

Z554-4NH-TC

easy-to-clean surface

and water dams to meet unique installation requirements

Watts 757N-BFG 2 1/2 - Part of the 757 Series mainline-siltfence deck flangeThis 2 1 2 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