High Purity Gas Regulator, Mounting Type Cylinder, Number of Stages Two Stage, Compatible Gas Type Argon, Helium, Nitrogen, Control Type Knob, Maximum Inlet Pressure 3,500 psig, Inlet Connection Size 0.965 In.-14, Inlet Connection Gender Male, Inlet Connection Type NGO, Inlet Thread Direction Right Hand, Outlet Pressure (Maximum) 50 psig, Outlet Connection Size 1/4 in, Outlet Connection Type Tube Fitting, Gas Purity Rating 99.9995 Percent, Helium Leak Integrity Rating 2.00 x 10^-8 cc/sec