Adjustable Relief Valve, Body Material Bronze, Inlet Type MNPT, Outlet Type FNPT, Inlet Size 1 in, Outlet Size 1 in, Factory Set Pressure 50 psi, Pressure Range 31 to 50 psi, Disc Material Bronze, Overall Height 7 1/2 in, Application Liquids, Seat Material Bronze, Spring Material 316 Stainless Steel, Temp. Range 0 Degrees to 450 Degrees F, Test Lever No