45V0204S - Weldcraft 45V0204S Large Diameter Stubby Gas Lens, .020-.040 in, 2-Pack

Precision Gas Coverage for Demanding TIG Applications

The Weldcraft 45V0204S Large Stubby Gas Lens is a specialized consumable designed to enhance the performance of standard air-cooled and water-cooled TIG torches, specifically the WP-17, WP-18, and WP-26 series. This component is engineered to accommodate micro-tungsten electrodes ranging from 0.020-inch (0.5mm) to 0.040-inch (1.0mm), making it an essential tool for precision welding on thin-gauge materials where arc stability and contamination control are paramount.

Gas lenses function by replacing the standard collet body with a unit containing a multi-layer mesh screen. This screen acts as a flow straightener, converting the turbulent gas flow from the torch into a coherent, laminar stream. The "Large Diameter" aspect of the 45V0204S provides a wider umbrella of shielding gas, which is critical for reactive metals like titanium or stainless steel where oxidation must be minimized. The "Stubby" configuration reduces the overall length of the torch front end, bringing the welder's hand closer to the work for improved control and allowing access into confined geometries that standard long gas lenses cannot reach.

Manufactured to Miller Electric's rigorous standards, these brass collet bodies ensure consistent electrical conductivity and thermal management. The precise machining of the threads and collet seat ensures a secure fit, preventing gas leakage and ensuring optimal current transfer to the tungsten. By utilizing this gas lens, operators can extend the tungsten stick-out significantly—often up to an inch or more—without compromising shielding coverage, thereby improving visibility of the weld puddle in deep joints or corners.