Thermady OxyFuel 250-350 FPRA Regulator Flashback Arrestor set with check valves. For all fuel gas use. Provides ultimate protection against "flashback" and premature failure of system components. Non-return valve. Large cylindrical stainless steel flame arrestor. CGA (022, 023), 9/16''-18 L/R Thread, B-hose connection.
Recommended for all oxy-acetylene torches to control dangerous gas backflows
Protection against "flashback" in your oxy-acetylene system
Designed to prevent mixing of oxygen and fuel
"B" 9/16"-18 threads
High flow capacity and automatic shut-off design