Safety Relief Valve, Body Material Bronze, Inlet Type MNPT, Outlet Type FNPT, Inlet Size 1 1/4 in, Outlet Size 1 1/2 in, Factory Set Pressure 175 psi, 0 BtuH BtuH, Disc Material Stainless Steel, Overall Height 9 1/4 in, Overall Length 9 1/4 in, Spring Material Stainless Steel, Temp. Range -320 Degrees to 406 Degrees F, Test Lever Test Lever Not Included, Standards ASME Code UV, CE, CRN, NB