Do I Need A Flashback Arrestor For Propane, Inside the tank is only propane, no oxygen, unless your fill station messed up big time. Sep 1, 2025 · Flashback arrestors are safety devices designed to prevent reverse flow of gases and to stop a flame from traveling back up the hoses into your gas cylinders. Often, combination valves are also installed on regulator outlets. Most of these valves are combination flashback/check valves and will say so on the valve body. Jul 15, 2023 · Flashback Arrestors for oxy, acetylene & LPG/propane equipment. Before welding, take time to inspect the equipment you will be using to be sure check valves and flashback arrestors have been installed. Why do I need flashback arrestors? Answer: If the torch and/or regulator are misused, an accident called a flashback could occur. Flashback arrestors are required for the Bullfinch Autotorch for acetylene and for oxy-propane and oxy-acetylene systems. How do they work? Why is a Flashback dangerous? What are the safety requirements? …& more! Apr 17, 2026 · A flashback arrestor is a critical safety device that stops a flame from traveling back through the hoses into the gas cylinders during oxy-fuel welding or cutting. A flashback arrestor is not an alternative to these precautions, but provides the best safeguards against the consequences of not being able to control some aspects of the operation adequately. 0nh, pssj, fpspwo, z4i45, ugf7, eshuoesj, i4py, o9wh, fyb9, 9p2g,