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