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(2) rubber gaskets
It is designed for use in the boiler feed lines of hydronic heating systems
ZA163-12NH
50 Minimum Temperature-Fahrenheit 33 Outlet Connection Size 3 IN Outlet Connection Type Grooved Joint Outlet Shutoff Valve Type Outside Stem And Yoke Gate Valve Outlet Thread Type Does Not Apply To Product Part Number F438603 Polymer Coating No Pressure Operation Continuous Protection Type Backpressure and Backsiphonage Seat Material Engineered Plastic Series 994 Strainer No Technologies Flood Detection Tradename None Specification Sheet - 994
Watts LF957RPDA-DOSY-CFM-FS 4 - Part of the LF957RPDA Series inlet-protection-finder (2) rubber gasketsThis 4 inch lead free reduced pressure detector backflow preventer assembly help stop the reverse flow of liquids due to backpressure or backsiphonage, where potential health hazard exists. Extremely compact and lighter than traditional designs it is approved for horizontal pattern installation. This assembly consists of a stainless steel body with a quick access sleeve, torsion spring check valves, domestic outside stem and yoke resilient seated gate