Single Gauge Norgren Regulator - Adjustable output pressure 0-60 psi. 3000 psig Max Primary Inlet. 60 psig Safety Relief Valve R82. Female CGA-320 connection. Ball valve outlet w/ 5/16" OD Hose Barb connection. Total ports = (2) Primary 1/4" FNPT ports, (2) Secondary 1/4" FNPT ports. UL Listed, Compressed Gas Regulator - for use w/ Air, Co2 and Inert Gases.