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This 1 inch double check valve backflow preventer assembly is designed to prevent the backflow of polluted water from entering into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements
UL agency approved
which can cause costly backups
The NIBCO® Press System® is user friendly
3" DWV STREET WYE AIR VENT-STRAIGHT This 1 inch double check3 DWV Wye Street SP x H x H
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