28Z91 - ESAB Purox AC-4 Mixer Replacement Spring

Restore Your Torch's Performance with the ESAB 28Z91 Spring

Keep your oxy-fuel equipment running smoothly with the ESAB 28Z91 Spring, the authentic replacement part for your AC-4 Mixer. If you are noticing inconsistencies in your flame or if your mixer isn't seating correctly during assembly, it might be time to check the internal components. This small but mighty spring plays a vital role in the internal mechanics of your mixer, ensuring that gas flow is regulated and that internal parts return to their proper positions after use.

Designed specifically for the Purox line of equipment now manufactured by ESAB, this spring fits perfectly inside the AC-4 mixer used with W-200 series handles. Welding professionals know that the quality of the flame dictates the quality of the weld or braze. A worn-out spring can cause subtle fluctuations in gas delivery, making it difficult to maintain a perfect neutral flame. By swapping out old, fatigued springs with a factory-fresh 28Z91, you eliminate these variables and get back to the precision control you expect from your tools.

Safety is paramount in oxy-fuel welding. Internal torch components that are worn or broken can lead to dangerous conditions, including backfires or leaks. Regular inspection and maintenance of your torch handle and mixer attachments are best practices for any serious fabricator. This spring is an affordable and simple fix that helps safeguard your equipment and your shop environment. Don't settle for "close enough" hardware store springs; use the part engineered for the heat and stress of welding.

The ESAB 28Z91 is built to last, featuring durable spring steel construction that resists taking a "set" even after thousands of cycles. It is a direct fit replacement, meaning no guessing or modification is required. Simply disassemble your AC-4 mixer, replace the old spring, and reassemble for immediate improvement in tactile feel and performance. Keep a few in your repair kit to ensure downtime is kept to a minimum.