Paano malaman ang expiration date ng oxy-acetylene flashback arrestor? A flashback arrestor is a crucial safety device in welding and cutting that prevents a flame from traveling back into the gas supply system (hoses, regulators, and cylinders), protecting both the operator and equipment from potential explosions or damage. How it works: Quenches the flame: Flashback arrestors typically use a combination of elements to stop a flashback, including a flame arrestor which cools the flame to below