45V45 - ESAB 45V45 TIG Gas Lens 1/8" (3.2mm) for 9/20 Series Torches

Superior Visibility and Control with the ESAB 45V45 Gas Lens

Elevate your TIG welding precision with the ESAB 45V45 Gas Lens, specifically sized for 1/8-inch (3.2mm) tungsten electrodes. Compatible with industry-standard 9 series (air-cooled) and 20 series (water-cooled) torches, as well as 22, 24, and 25 series models, this component is a game-changer for welders who demand the best results. The gas lens functions by replacing the conventional collet body and introducing a fine mesh screen barrier that rectifies the flow of shielding gas (typically Argon) as it exits the torch.

Standard collet bodies often produce a turbulent gas stream that can pull in surrounding air, leading to weld defects. In contrast, the ESAB 45V45 creates a smooth, laminar stream that flows evenly over the workpiece. This improved flow dynamics allows for a much longer tungsten stick-out—up to six times the electrode diameter in some cases. This feature is critical for fillet welds, inside corners, and complex geometries where getting the torch nozzle close to the joint is physically impossible. With the tungsten extended, you gain a clear line of sight to the arc, improving your control and reducing operator fatigue.

In addition to visibility, the ESAB gas lens improves the cooling of the tungsten electrode and the torch head, potentially extending the life of your consumables. The stable gas column also permits slightly lower gas flow rates in some applications, saving on consumable costs over time. This part is robustly constructed to withstand the thermal cycles of heavy-duty welding, making it a reliable choice for industrial manufacturing, motorsports fabrication, and aerospace repair.

Installation is straightforward: simply remove your existing collet body and nozzle, install the 45V45 gas lens with a standard 1/8" collet, and attach a compatible gas lens cup. Experience the difference in arc stability and bead appearance that a high-quality gas lens brings to your TIG process.