Pilot-Operated Pressure Regulator Series E Body Material Cast Iron Inlet Size 1/2 in Outlet Size 1/2 in Length 4 3/8 in Height 12 5/8 in Pressure Adjustment Range 20 to 150 psi Max Temp 450 Degrees F Max Pressure 250 psi Standards ASME B16.1 with ANSI Class 4 Seat Tightness