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ZB1910-3NL
while the combination flashing clamp and frame secure waterproofing and integration with surrounding surfaces
This product is easy to install by simply opening with a pop up
50 Minimum Temperature-Fahrenheit 33 Outlet Connection Size 2 IN Outlet Connection Type Female Threaded Outlet Shutoff Valve Type Quarter Turn Ball Valve Outlet Thread Type NPT Part Number T072505 Polymer Coating No Pressure Operation Continuous Protection Type Backpressure and Backsiphonage Seat Material Rubber Series 007 Strainer No Technologies Freeze Detection Tradename None Specification Sheet - 007 Sizes 1/2 - 2 IN
Large diaphragm provides exceptional performance
Watts 757DCDA-DOSY-CFM 3 - Part of the 757DCDA Series Basement Window Well ZB1910-3NLThis 3 inch double check detector backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and water of non potable quality, but not toxic, 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 such as on fire
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