Gas Regulator Minimum Outlet Pressure (Oxygen) 0 psig Number of Stages Single Stage Diaphragm Material Neoprene Duty Rating Medium/Standard Duty Inlet Connection Size 0.825 In.-14 Inlet Connection Type NGO Inlet Thread Direction Left Hand Right Hand Maximum Inlet Pressure 400 psig CGA Number (Oxygen) CGA 540 Outlet Connection Gender Male Outlet Connection Size 9/16 In.-18 9/16 In.-18 Outlet Connection Type UNF Outlet Thread Direction Left Hand Right Hand Body Material Brass