639677 - ESAB Oxygen Check Valve Assembly - Male Connection

Don't Compromise on Safety

When you're working with oxy-fuel, safety is the name of the game. The ESAB Oxygen Check Valve Assembly (SKU: 639677) is your first line of defense against one of the most common hazards in gas welding: reverse flow. If your oxygen pressure drops or a tip gets clogged, gas can travel back up the hose, creating a potentially explosive mixture in your regulator or cylinder. This simple but effective device stops that dead in its tracks, keeping the gas moving where it should—out the torch.

Built by ESAB, a leader in welding technology, this check valve is tough enough for daily shop use. It features a male connection with the standard right-hand threads you expect for oxygen lines, making it impossible to accidentally hook up to your fuel gas line. The solid brass body stands up to the knocks and bumps of the job site, while the internal valve reacts instantly to any back pressure.

Think of this check valve as cheap insurance for your rig and your personal safety. It doesn't replace a flashback arrestor, but it works hand-in-hand with one to keep your system secure. Don't run your torch without it. Upgrade your setup with the ESAB 639677 and weld with confidence, knowing you have professional-grade protection on your side.