Watts 757-BFG 2 1/2 - Part of the 757 Series ZA100F-2NH Compatibility: For use with ThermalMAX

Compatibility: For use with ThermalMAX Series Roof Hatches

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Features Serviceable in-line

Robust cast iron body with corrosion-resistant finish

ZN400H-3NH

Watts 757-BFG 2 1/2 - Part of the 757 Series ZA100F-2NH Compatibility: For use with ThermalMAXThis 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