Flashback arrestors are a safety device used in those applications that use gas. It is generally used in oxy-fuel cutting and welding to prevent the user and equipment from explosions or damages. These arrestors will stop the flame or reverse the flow of gas as a prevention method. Victor's flashback arrestors can also be found in some of their torch handles for more convenience.
Victor flowmeter regualtors are designed to give accurate flow control of the more high pressure gases.