Safety Relief Valve, Body Material Bronze, Inlet Type MNPT, Outlet Type FNPT, Inlet Size 1 in, Outlet Size 1 1/4 in, Factory Set Pressure 25 psi, Disc Material Bronze, Overall Height 7 5/8 in, Application Steam, Overall Length 1 3/4 in, Seat Material Metal, Spring Material ASTM A-313 TY 631, Temp. Range -60 Degrees to 406 Degrees F, Test Lever Yes, Compliance Section I Steam