Specialty Gas Regulator Regulator Supply Type Cylinder Gas Service Carbon Dioxide Stages Two Stage Inlet Connection CGA-320 Outlet Connection 1/4 in Tube Fitting Delivery Pressure Range 0 to 125 psi Gauge Size 2 In. Supply Pressure Gauge 4000 psi Max Inlet Pressure 3000 psi Body Material Chrome Plated Brass Diaphragm Material 316L Stainless Steel Body Dia 2.000 In. Includes Diaphragm Type Shut Off Valve and Relief Valve Standards CGA E-4