Watts 957 OSY GXG FS 6 Part of the 957 Series roof hatch finder 20 Gasket Maximum Temperature 180 20 Gasket Maximum Temperature 180 Degree F Inlet Connection Size 1 1 2 IN Inlet Connection Size Metric 40 MM Inlet Connection Type Female Threaded Inlet Material Malleable Iron Inlet Thread Type NPT Insulator Material Polysulfone Lead Free YES Maximum Working Pressure PSI 250 Maximum Working Temperature Fahrenheit 180 Nut Material Malleable Iron Outlet Connection Size 1 1 2 IN Outlet Connection Type Female Threaded Outlet Material Malleable Iron Outlet Thread Type NPT Part Number 0821934 Series LF3004 Type Kit Specification Sheet LF3004 Use this kit to add flood detection capabilities to your existing valve Features Features a flood sensor with SentryPlus Alert technology to detect excessive water discharges from the relief valve The add on sensor connection kit is available for building management systems and cellular communication