Gas Switchover System, Compatible Gas Type Argon, Helium, Nitrogen, Gas Purity Rating 99.9995 Percent, CGA Number CGA 580, Helium Leak Integrity Rating 1 x 10-6, Maximum Inlet Pressure 3,000 psig, Outlet Pressure (Maximum) 125 psig, Outlet Connection Type NPT, Outlet Thread Direction Right Hand, Inlet Connection Size 0.965 In.-14, Inlet Connection Type NGO, Inlet Thread Direction Right Hand, Body Finish Chrome Plated, Body Material Brass, Application Cutting, Welding, Control Type Knob