Prima PFA 01 - Brass Flash Back Arrestor for Regulator - It is the form of safety device used in gas fuel welding and cutting to stop the flame or reverse flow of gas back up into the system. It is used to protect single cylinders, outlet points, or pipelines. They can be used for almost all technical gases. With the help of established safety elements, the flashback arrestor can offer protection against flashbacks and backfires. It prevents the formation of dangerous gas mixtures within the pipelines and material brass, gas oxygen and usage regulator.