Flashback Arrestor Torch Or Regulator, Flashback arrestors and reverse flow check valves provide additional protection against flashbacks. This article Flashback Arrestors Available for torches and regulators. They are a mandatory requirement to be fitted to both torch and to the regulator on both fuel and oxygen lines. Victor recommends the use of these devices whenever possible. The built-in check valve prevents reverse gas flow while the stainless steel sintered filter acts as a flame block. Uniweld’s flashback arrestors also have built-in check valves to prevent reverse flow of gases. Victor add-on flashback arrestors contain both a reverse flow check valve and a flashback arrestor. Same and Next Day Delivery. Browse flashback arrestors with internal check valves for complete protection. This element absorbs heat and quenches the flame front, stopping the flame from reaching the regulator or cylinder. jukf, bx, kmf, 04, ty6u, ozkaplc, pqdti, hshhqs4co, boct, gqa,