2-Inch Oxygen Cylinder Content Gauge 0-4000 PSI Steel Case

Keep Your Regulator Running with a Reliable High-Pressure Gauge

A broken or sticking gauge on your regulator isn't just an annoyance; it's a safety hazard and a production stopper. The ESAB 999519 is the solid, no-nonsense replacement gauge you need to get your oxygen or inert gas regulator back in top shape. Rated for 0-4000 PSI, this gauge is designed to read the "high side" pressure—telling you exactly how much gas is left in your tank so you never run dry in the middle of a critical bead.

We know that welding gear takes a beating. That's why this gauge features a tough steel case (STL) rather than cheap plastic. It can handle the bumps, knocks, and vibrations of a busy shop or a mobile rig. The 2-inch face is the standard size for most regulators, big enough to read easily from a few feet away but small enough to stay out of the way. The "Green" (GRN) face styling is the universal sign for Oxygen service, keeping your setup organized and safe, though it works just as well for high-pressure Argon or Mix bottles if the pressure range matches your needs.

Installation is straightforward. It features a Lower Back Mount (LBM) connection, which screws directly into the back of your regulator body. Just make sure to use a little Teflon tape or thread sealant on the NPT threads (being careful to keep the opening clear) and wrench it down for a tight seal. Don't let a cracked lens or a bent needle guess your gas levels. Swap it out with this professional-grade replacement and weld with confidence, knowing exactly what you have in the tank.

Whether you are refurbishing an old Victor, Harris, or ESAB regulator, or just fixing a gauge that took a hit, this unit fits the bill. It's an essential spare part to keep in your toolbox. When you can't trust your gauges, you can't trust your weld quality. Upgrade to a steel-cased gauge that is built to last as long as your welder does.