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Built-in check valves prevent hot and cold water cross flow
It consists of a thermoplastic body construction
The material features a heavy-duty thickness that offers enhanced puncture resistance
and compatibility with common piping connections
This drop-in unit features a push-fit gasket seal for quick installation without the need for caulking
Watts 757-OSY-FXG 4 - Part of the 757 Series Z100F-8NH Built-in check valves prevent hotThis 4 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 line
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