19840 - ESAB Regulator Diaphragm Replacement Kit

Fix Your Regulator and Get Back to Work

Is your regulator humming, leaking, or letting the pressure creep up when you aren't using the torch? These are classic signs of a blown or worn-out diaphragm. Instead of tossing your expensive ESAB or Purox regulator in the trash and shelling out hundreds for a new one, grab the ESAB 19840 Diaphragm Assembly and fix it yourself. This is the part that does the heavy lifting inside your regulator, flexing back and forth to keep your gas flow steady.

Regulators take a beating in the shop. Between the high pressure from the tank and the constant adjustments, the rubber diaphragm eventually wears out. When it does, your flame gets unstable, and your welds suffer. This replacement assembly is the real deal—a genuine ESAB part that fits right the first time. It comes ready to drop in, helping you seal up that leak and get your pressure readings rock-steady again.

Swapping out a diaphragm is a standard maintenance task that can save you significant downtime and money. Whether you are running an oxy-fuel cutting rig or a MIG shielding gas setup, keeping your regulator in top shape is a safety priority. Don't let a $50 part ruin a $500 regulator. Keep a spare 19840 assembly in your toolbox so you're never stuck waiting on parts when a job needs to get done.