Flowmeter Regulator, Regulator Supply Type Cylinder, Gas Service Argon, Carbon Dioxide, Helium, Stages Single Stage, Inlet Connection CGA-580, Outlet Connection 5/8 In.-18 RH Internal, Delivery Pressure Range 0 to 80 psi, Gauge Size 2 in, Supply Pressure Gauge 0 to 4000 psi, Max. Inlet Pressure 3,500 psi, Body Material Brass, Diaphragm Material Neoprene, Body Dia. 2 in, Includes Filtered Seat, Flowball, Standards UL Listed, Regulator Application General Purpose