Pilot-Operated Pressure Regulator Series E Body Material Cast Iron Inlet Size 3/4 in Outlet Size 3/4 in Length 4 3/4 in Height 12 7/8 in Pressure Adjustment Range 3 to 20 psi Max Temp 450 Degrees F Max Pressure 250 psi Standards ASME B16.1 with ANSI Class 4 Seat Tightness