Watts 957 OSY GXG FS 6 Part of the 957 Series roof hatch finder UPC 098268479690 UPC 098268479690 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 It has OSY groove by groove gate valves that show if the valve is open or closed and prevent stem corrosion The easy maintenance assembly consists of positive seated torsion spring check modules