45V43 - Weldcraft 45V43 Gas Lens 1/16" (1.6mm) for 9/20 Series Torches - 2 Pack

Technical Overview of the Weldcraft 45V43 Gas Lens

The Weldcraft 45V43 Gas Lens is a precision-engineered TIG torch consumable designed to optimize shielding gas coverage for 1/16-inch (1.6mm) tungsten electrodes. Manufactured by Miller Electric under the Weldcraft brand, this component is essential for operators utilizing the 9, 20, 22, 24, or 25 series TIG torches. The primary function of the 45V43 is to replace the standard collet body with a unit that incorporates a multi-layered fine mesh screen. This screen acts as a diffuser, transforming the turbulent flow of shielding gas (typically Argon) from the torch handle into a coherent, laminar column as it exits the nozzle.

Standard collet bodies often produce a turbulent gas stream that can easily be disturbed by cross-drafts or excessive distance from the workpiece, leading to porosity or oxidation. In contrast, the 45V43 Gas Lens creates a stable, columnar flow pattern. This technical advantage allows the welder to extend the tungsten electrode significantly further past the ceramic cup—often up to an inch depending on the cup size—without compromising the inert atmosphere around the weld pool. This capability is critical for industrial applications requiring access to deep grooves, inside corners, or complex geometries where a standard nozzle setup would obstruct the welder's view or fail to provide adequate coverage.

The 45V43 is constructed from high-quality brass with integrated stainless steel mesh screens, ensuring durability and resistance to heat cycling. It is designed to mate perfectly with standard 1/16-inch collets and compatible gas lens nozzles (alumina cups). As a genuine Weldcraft part, it adheres to strict manufacturing tolerances, ensuring consistent thread engagement and electrical conductivity. This product is supplied in a package of two, providing MRO departments and fabrication shops with necessary inventory for routine maintenance and consumable replacement.

Compatibility Reference:

• Torch Series: WP-9 (Air Cooled), WP-20 (Water Cooled), WP-22, WP-24, WP-25.
• Electrode Diameter: 0.0625" (1/16" / 1.6mm).
• Required Accessories: Requires compatible gas lens alumina nozzles (e.g., 53N series) and standard collets.