Safety Relief Valve Body Material Cast Bronze Inlet Type MNPT Outlet Type FNPT Inlet Size 2 1/2 in Outlet Size 2 1/2 in Factory Set Pressure 15 psi Pressure Range 5 to 15 psi Steam Capacity (Lb./Hr.) 4 676 lb/hr Disc Material PTFE Overall Height 8 1/4 in Application Low Pressure Steam Heating and Supply Boilers Overall Length 7 1/2 in Seat Material Chrome Plated Seat w/ TFE Coated Brass Disc Spring Material Rust Proofed Steel Temp Range 0 Degrees to 250 Degrees F Test Lever Yes