Welding Torch Check Valve Pair, Mounting Location Torch, Compatible Gas Type Fuel, Oxygen, Inlet Connection Size 9/16 In.-18, Outlet Connection Size 9/16 In.-18, Inlet CGA Number (Fuel) CGA 023, Inlet CGA Number (Oxygen) CGA 022, Hose Fitting Size B, Body Material Brass; Stainless Steel, Inlet Connection Type UNF, Inlet Thread Direction Left Hand, Right Hand, Outlet Thread Direction Left Hand, Right Hand, Product Type Check Valve Set, Series 88-6CVT, Standards OSHA Compliance WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov -