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lower stem assembly
For larger projects
The pressure rating is 400 psi WOG and 125 psi WSP
Product Codes: Z420-2NH
Watts 757-BFGXPIV 3 - Part of the 757 Series Z100F-4NH lower stem assemblyThis 3 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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