Gas Regulator, Maximum Gauge Outlet Pressure 4, 000 psig, Number of Stages Single Stage, Compatible Gas Type Oxygen, Control Type T-Handle, Inlet Connection Type NGO, Inlet Connection Gender Male, Inlet Connection Size 0.825 In. -14, Outlet Pressure (Maximum) 175 psig, Outlet Connection Gender Male, Outlet Connection Size 9/16 In. -18, Outlet Connection Type UNF, Body Material Brass, Diaphragm Material Stainless Steel, CGA Number CGA 540, Hose Fitting Size B. This item has been restricted from sale in the following state (s): []