21939 - 2-Inch Replacement Regulator Gauge - 600 PSI LBM

Get Your Regulator Back in the Game

There is nothing more frustrating than a busted gauge on your regulator. Maybe it took a hit from a tank changeout, or maybe it’s just so old you can't read the needle through the scratched lens. Whatever the reason, flying blind without knowing your output pressure is a recipe for bad welds and safety hazards. The ESAB 21939 replacement gauge is the fix you need to get your rig reading right again.

This isn't just a cheap throwaway part; it's built with the shop environment in mind. The case is made from tough ABS plastic. Why does that matter? Because unlike cheap metal cases that dent and rust, ABS bounces back. It resists the grease, grime, and occasional impact that happens in every welding shop. The 2-inch face is bright white with bold numbers, so you can check your pressure at a glance—even if you're standing a few feet away or working in a dimly lit corner of the shop.

Why Choose This Gauge?

• Readable: No more squinting. The white face makes the needle position pop.
• Tough: The plastic housing won't rust or dent easily.
• Standard Fit: If your regulator takes a standard 2-inch gauge with a back mount, this is likely the one you need.
• Versatile Range: Reads up to 600 PSI, perfect for high-flow delivery settings or specific gas applications.

Installing it is straightforward. Just make sure your system is fully depressurized, remove the old gauge, apply a little approved sealant (be careful with oxygen service!), and thread this one in. It’s a small investment that saves you the headache of guessing your flow rates. Don't let a broken dial stop your production; keep a spare ESAB gauge in your toolbox and keep the sparks flying safely.