45V45 - Miller Weldcraft 45V45 TIG Gas Lens Collet Body 1/8 Inch 2-Pack

Precision Gas Flow Control for TIG Welding

The Weldcraft 45V45 Gas Lens is an essential consumable for professional TIG welders seeking to elevate the quality and consistency of their welds. Designed to fit a wide range of TIG torches, including the popular 9, 20, 22, 24, and 25 series, this component replaces the standard collet body to provide superior shielding gas management. The primary function of the 45V45 is to transform the turbulent flow of shielding gas from the torch into a coherent, laminar stream. This is achieved through a multi-layered mesh screen within the lens body, which straightens the gas flow as it exits the nozzle. The result is a column of gas that is far more resistant to cross-drafts and atmospheric contamination compared to standard setups.

By virtually eliminating turbulence, the Weldcraft 45V45 allows the operator to extend the tungsten electrode significantly further beyond the cup—often up to an inch or more depending on the application—without compromising the integrity of the shield. This extended stick-out capability is crucial when welding in tight corners, deep grooves, or complex geometries where visibility is typically restricted. With the nozzle further back, the welder gains a clear line of sight to the puddle, ensuring precise arc control and filler metal deposition.

Constructed from high-grade copper and brass, the 45V45 gas lens offers excellent thermal conductivity and durability, capable of withstanding the heat generated during amperage ranges of 125 A to 250 A. It is specifically engineered for use with 1/8-inch (3.2mm) tungsten electrodes. This package contains two genuine Weldcraft gas lenses, ensuring you have a backup on hand for critical projects. Whether you are working with stainless steel, titanium, or other reactive metals where shielding quality is paramount, upgrading to a gas lens system is one of the most effective ways to improve weld appearance and reduce post-weld cleaning.