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 125 psi Disc Material Bronze Overall Height 7 5/8 in Application Air Gas 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 VIII Air/Gas