636331 - ESAB ST-23A Spool Gun Trigger Assembly Replacement

Get Your ST-23A Spool Gun Back in Action

Is your ST-23A Spool Gun misfiring? Does the trigger feel sticky, loose, or unresponsive? The ESAB 636331 Trigger Assembly is the direct replacement part you need to solve these issues and get back to welding. The ST-23A is one of the most respected spool guns in the industry, favored for its robust design and ability to feed soft aluminum wires over long distances. However, even the toughest tools require maintenance, and the trigger assembly is often the first component to show signs of wear after years of heavy use.

When a trigger begins to fail, it often manifests as intermittent wire feeding or difficulty initiating the arc. You might find yourself squeezing harder to make contact, which leads to hand fatigue and poor torch control. Replacing the trigger assembly with this genuine ESAB part (636331) solves these problems instantly. It restores the original "click" and positive engagement you expect, ensuring that every pull of the trigger results in an immediate and consistent response from your power source.

Easy Repair for Long-Term Performance

Repairing your own equipment is a smart way to save money and minimize downtime. The 636331 Trigger Assembly is designed for a straightforward installation into the ST-23A handle. Because it is an OEM part, the dimensions, mounting points, and wire leads are correct, eliminating the guesswork associated with universal switches. You won't have to splice wires or modify the gun casing.

Don't let a small component compromise your weld quality. A reliable trigger allows for better tacking, smoother starts, and reduced operator frustration. Whether you are a professional fabricator or a serious hobbyist, keeping your spool gun in top condition is key to producing professional-grade aluminum welds. Invest in the longevity of your tools with the ESAB 636331 Trigger Assembly from Welders Supply.