Technical Specifications Category Specification Type Pilot-Operated Pressure Regulator Service Natural Gas, Inert Gases Body Size 1-1/2" to 3" NPT Maximum Inlet Pressure 400 psig (28 bar) Outlet Pressure Range Adjustable via spring change (typical ranges: 5-50 psig, 20-100 psig) Temperature Range -20°F to 150°F (-29°C to 66°C) Body Materials Ductile Iron (standard), Cast Steel Trim Materials Stainless Steel Actuator Type Spring-Diaphragm Pilot Connection 1/4" NPT