Gas Regulator, Regulator Supply Type Cylinder, Gas Service Inert, Stages Single Stage, Inlet Connection CGA-580, Outlet Connection 1/4 In. -37 Degrees Flared, Delivery Pressure Range 500 psi, Gauge Size 2 in, Supply Pressure Gauge 3, 000 psi, Max. Inlet Pressure 3, 000 psi, Body Material Brass, Diaphragm Material Neoprene, Body Dia. 2.5 in, Includes Not Applicable, Standards Listed to UL252 by ETL, Regulator Application General Purpose. This item has been restricted from sale in the following state (s): []