Safety Relief Valve Body Material Bronze Inlet Type MNPT Outlet Type FNPT Inlet Size 3/4 in Outlet Size 1 in Factory Set Pressure 250 psi Pressure Range 0 to 150 psi Disc Material PCTFE Overall Height 6 13/16 in Application Air Gas Overall Length 2 1/2 in Seat Material Brass Spring Material 302 Stainless Steel Temp Range -320 Degrees to 150 Degrees F Test Lever No Compliance Section VIII Air/Gas Standards ASME