21868 - ESAB 2-Inch High Pressure Regulator Gauge 4000 PSI 1/8 NPT

Don't Let a Smashed Gauge Stop Your Weld

We've all been there. You're moving the cylinder cart, a wheel catches a cable, the cart tips just enough, and crack—your regulator gauge kisses the concrete. Now you're flying blind, not knowing if you have 2000 PSI or 200 PSI left in that tank. Or maybe the needle is just stuck, or the lens is so scratched you can't read it. Whatever the reason, a broken high-pressure gauge is a nuisance and a safety hazard. The ESAB 21868 is the no-nonsense replacement you need to get your rig back in fighting shape.

This isn't just any cheap gauge; it's a solid 2-inch unit with a bright white face. Why does the white face matter? Because when you have your hood up and you're grinding or fitting, you want to be able to check your gas levels from a few feet away. The high contrast makes it easy to see exactly where your needle sits. It reads from 0 to 4000 PSI, which covers you for pretty much any standard high-pressure cylinder you're going to hook up, whether it's Oxygen for your torch or Argon/CO2 for your MIG welder.

Installation is straightforward. It uses a standard 1/8-inch NPT thread. If you aren't sure what your regulator has, 1/8 NPT is the most common size for the actual gauge ports on most Miller, Lincoln, Victor, and ESAB regulators. Just make sure you use a little PTFE tape (rated for oxygen if you are using it on oxygen!) or appropriate thread sealant, and don't over-torque it. You want it snug and leak-free, not stripped.

Stop guessing how much gas you have left. Running a tank dry in the middle of a bead is the worst way to ruin a weld, leading to porosity and wasted time grinding out bad metal. For the price of a few coffees, you can swap out that busted gauge and restore your regulator to full functionality. Keep a spare in your toolbox; gauges are the first thing to break in the field, and having a backup means you don't have to shut down the job site for a simple parts run.