49V28 - Weldcraft 49V28 TIG Gas Lens Collet Body 1/4 Inch

Precision Gas Control for Superior TIG Welds

The Weldcraft 49V28 Gas Lens, 1/4" (6.4mm) is an essential upgrade for professional fabricators utilizing the heavy-duty 27A and 27B series TIG torches. In the realm of Gas Tungsten Arc Welding (GTAW), the quality of your shielding gas coverage is directly proportional to the quality of the finished weld. Standard collet bodies often allow shielding gas to exit the nozzle in a turbulent, chaotic manner. This turbulence can draw in atmospheric air—oxygen and nitrogen—which contaminates the weld pool, leading to porosity, oxidation, and weak joints. The 49V28 Gas Lens solves this problem through engineering precision.

At the heart of this component is a multi-layer stainless steel mesh screen system housed within a durable brass body. As the shielding gas passes through these screens, the flow is rectified and smoothed out, emerging from the nozzle as a coherent, laminar column. This stable stream of gas provides a much more robust shield around the molten puddle, even in drafty shop conditions where standard nozzles might fail. For welders working with reactive metals such as titanium, stainless steel, or aluminum, this enhanced protection is critical for achieving X-ray quality results.

One of the most significant operational benefits of using the 49V28 Gas Lens is the ability to extend the tungsten electrode. Because the gas column remains coherent for a greater distance after leaving the nozzle, welders can stick the electrode out significantly farther—often up to an inch or more depending on the cup size—without losing shielding coverage. This feature is invaluable when welding inside deep corners, V-grooves, or complex geometries where the nozzle cup would otherwise obstruct the view or hit the workpiece. By improving visibility and access, the 49V28 not only improves weld quality but also reduces operator fatigue and frustration.

Designed specifically for the 27 series torches, this gas lens ensures a perfect fit and optimal electrical conductivity. It is a small investment that yields substantial returns in weld appearance, structural integrity, and gas efficiency.