What is the primary purpose of flashback arrestors?

Flashback arrestors are essential safety devices used in oxyfuel cutting and welding to prevent dangerous conditions. Their primary purpose is to stop fire and prevent flashbacks, which occur when the flame travels back into the gas supply lines. This could lead to explosions or fires if not controlled.

When a flashback occurs, it indicates that the flame has moved into the hoses and potentially into the gas source, creating a significant hazard. Flashback arrestors contain mechanisms, such as thermal barriers and check valves, which shut off the gas flow when a flashback is detected. By doing this, they protect the users and the environment from the severe consequences of an uncontrolled fire.

Other options do not align with the function of flashback arrestors. For instance, while gas pressure and flame temperature are important aspects of cutting and welding, they are not the purpose of a flashback arrestor. Additionally, the flow of gas is regulated by different equipment, and not the flashback arrestors, which specifically function as a safety feature.