High Flow Flashback Arrestor Mounting Location Regulator Compatible Gas Type Fuel 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 Outlet Connection Type UNF Product Type Flashback Arrestor Series 88-5 FBHFR