Uniweld’s TFAM101 torch fuel flashback arrestor quenches backfire and flashback at the torch. Uniweld’s flashback arrestors also have built-in check valves to prevent reverse flow of gases. They are color coded, Green: Oxygen and Red: Fuel Gas, and are available for torches and regulators. Flashback arrestors installed at the torch help protect the technician and at the regulator help protect the equipment. Size is 3/8″-24 “A”.