- Valves 406 Degrees F, Max. Steam Pressure - Valves 150 psi WSP, Inlet to Outlet Length - Valves 2 15/16 in, Top of Handle to Inlet Center - Valves 5 3/16 in, Valve Class Class 150, Stem Material Bronze Globe Valve,Class 150,3/4 In. Fluid Pressure - Valves 300 psi, Max..