Safety Relief Valve, Body Material Stainless Steel, Inlet Type FNPT, Outlet Type MNPT, Inlet Size 1/2 in, Outlet Size 1/2 in, Factory Set Pressure 25 psi, Disc Material Stainless Steel, Overall Height 4 in, Application General utility valve of all stainless steel construction, including spring, Overall Length 2 1/8 in, Seat Material PTFE, Spring Material Stainless Steel, Temp. Range -60 Degrees to 406 Degrees F, Test Lever Test Lever Not Included