Adjustable Relief Valve, Body Material Bronze, Inlet Type MNPT, Outlet Type FNPT, Inlet Size 1 1/4 in, Outlet Size 1 1/4 in, Factory Set Pressure 300 psi, Pressure Range 251 to 300 psi, 0 BtuH BtuH, Disc Material 316 Stainless Steel, Overall Height 8 1/4 in, Overall Length 8 1/4 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