Pressure Regulator, Series ED, Body Material Cast Iron, Inlet Size 4 in, Outlet Size 4 in, Length 14 3/4 in, Height 20 in, Application Steam, District Heating Systems, Connection Type Flanged, Pressure Adjustment Range 10 to 100 psi, Gauge Port Size 1/4 in, Seal Material EPDM, NBR, Max. Temp. 450 Degrees F, Max. Pressure 250 psi, Standards ANSI/FCI 70-2 Class IV Shutoff, ASME/ANSI B16.1 Class 250, FCI 70-3 Class VI Shutoff, Includes Pressure Pilot, Single Seat Main Valve