71Z78 - ESAB AC-4 Powder Torch Outer Sleeve Replacement

Genuine ESAB AC-4 Torch Replacement Component

The ESAB 71Z78 Outer Sleeve is a critical engineering component designed specifically for the ESAB AC-4 Powder Cutting Torch system. Powder cutting is a specialized oxy-fuel process utilized to cut oxidation-resistant materials such as stainless steel, cast iron, and non-ferrous metals. The process relies on the precise injection of iron powder into the cutting oxygen stream to generate the intense exothermic reaction required to melt refractory oxides.

This outer sleeve functions as a containment and direction guide at the torch head assembly. It is manufactured to ESAB's precise tolerances to ensure the powder is delivered effectively into the preheat flame and cutting stream without turbulence or clogging. Using non-OEM parts in powder cutting equipment can lead to inconsistent powder flow, dangerous flashbacks, or premature wear of the torch head.

Regular inspection and replacement of the outer sleeve are recommended as part of a preventative maintenance schedule for AC-4 torches, especially in high-duty cycle environments such as foundries, scrap processing facilities, and demolition sites. This part ensures the structural integrity of the nozzle assembly and protects internal components from the abrasive nature of the iron powder and the extreme heat of the cutting zone.