Safety Relief Valve, Body Material Cast Iron, Inlet Type MNPT, Outlet Type FNPT, Inlet Size 2 in, Outlet Size 2 in, Factory Set Pressure 15 psi, Steam Capacity (Lb./Hr.) 3,164 lb/hr, Disc Material Bronze, Overall Height 7 1/4 in, Application Low Pressure Steam Heating Boilers, Overall Length 3 in, Seat Material Brass, Spring Material Steel, Temp. Range 0 Degrees to 250 Degrees F, Test Lever Test Lever Included, Compliance Section IV Steam, Standards ASME Code HV