Safety Relief Valve Body Material Cast Iron Inlet Type MNPT Outlet Type FNPT Inlet Size 3 in Outlet Size 3 in Factory Set Pressure 15 psi Steam Capacity (Lb./Hr.) 6 949 lb/hr Disc Material Bronze Overall Height 8 3/4 in Application Steam Overall Length 4 in Seat Material Brass Spring Material Steel Temp Range 0 Degrees to 250 Degrees F Test Lever Yes Compliance Section IV Steam Standards ASME Code Section IV