Flowmeter, Regulator Supply Type Cylinder, Gas Service Argon, Carbon Dioxide, Helium, Stages Single Stage, Inlet Connection 5/8 In. -18 RH External, Outlet Connection 5/8 In. -18 RH Internal, Delivery Pressure Range 50 psi, Max. Inlet Pressure 50 psi, Body Material Brass, Includes Self-Centering Ball, Shatter Resistant Polycarbonate Resin Tube, Regulator Application General Purpose. This item has been restricted from sale in the following state (s): []