Watts 957 DOSY FS 6 Part of the 957 Series mainline adatile NRS resilient seated gate valves NRS resilient seated gate valves This 1 inch total relief valve replacement kit is used for repairing the parts to the relief valve series SS009 which prevents the reverse flow of polluted water from entering into the potable water supply due to backsiphonage and or backpressure This assembly consists of a stainless steel body with a quick access sleeve 50 Minimum Temperature Fahrenheit 33 Outlet Connection Size 6 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 F113043 Polymer Coating No Pressure Operation Continuous Protection Type Backpressure and Backsiphonage Seat Material Engineered Plastic Series 957 Strainer No Technologies Flood Detection Tradename None Specification Sheet 957