Adjustable Relief Valve, Body Material Bronze, Inlet Type MNPT, Outlet Type FNPT, Inlet Size 1 1/2 in, Outlet Size 1 1/2 in, Factory Set Pressure 600 psi, Pressure Range 401 to 600 psi, 0 BtuH BtuH, Disc Material 316 Stainless Steel, Overall Height 9 1/2 in, Overall Length 9 1/2 in, Seat Material 316 Stainless Steel, Spring Material Stainless Steel, Temp. Range 0 Degrees to 450 Degrees F, Test Lever Test Lever Not Included, Standards Non-Code, Field Adjustable