Gas services : Air, N2, H2, He, Ace, Arg, N2o, P10 and other gas also for flammable / nonflammable corrosive gases. Outlet Connection : ¼” OD ferruel fitting with ball valve. Inlet connection : ¼” BSP male to suit pigtail coming from cylinder. Mounting Dimension Size : 500 mm (L) X 300 mm (H) X 45 mm (D). Yes!