High Purity Gas Regulator, Mounting Type Cylinder, Number of Stages Single Stage, Compatible Gas Type Hydrogen, Methane, Control Type Knob, Maximum Inlet Pressure 3,500 psig, Inlet Connection Size 0.825 In.-14, Inlet Connection Gender Male, Inlet Connection Type NGO, Inlet Thread Direction Left Hand, Outlet Pressure (Maximum) 150 psig, Outlet Connection Size 1/8 in, Outlet Connection Type Tube, Gas Purity Rating 99.99 Percent, Helium Leak Integrity Rating 1.00 x 10^-5 cc/sec