Flashback Arrestor

A flashback arrestor is a safety device that is used in gas welding, cutting, and brazing to prevent a flame from traveling back through the gas hose and into the gas cylinder or fuel source, which can cause an explosion. It is a type of check valve that is placed in the gas supply line between the cylinder and the torch or other equipment.

A flashback arrestor works by using a combination of mechanical and thermal elements to stop the flame from traveling back through the gas hose. If a flame does attempt to travel back through the arrestor, the mechanical element, such as a ball or flap valve, closes to stop the flame. Additionally, the thermal element, such as a fusible link, will melt and stop the flame as well.

Flashback arrestors are designed to be used with specific types of gas and should be matched to the gas being used. They are available in different sizes and styles to suit different applications and equipment, and they should be inspected and tested regularly to ensure they are functioning properly.

It's worth noting that a flashback arrestor is a crucial safety component in gas welding, cutting, and brazing, as it helps to prevent explosions and fires. It is also important to ensure that the arrestor is compatible with the gas and equipment being used, and that it is regularly inspected and maintained.