45V29 - 45V29 TIG Gas Lens Collet Body 3/32" for 17/18/26 Torches

Precision Gas Flow Control for TIG Welding

The 45V29 Gas Lens Collet Body is a critical component for achieving high-quality TIG welds, specifically designed for use with 3/32-inch (2.4mm) tungsten electrodes. Engineered to fit standard 17, 18, and 26 series TIG torches, this gas lens replaces the standard collet body to fundamentally alter the dynamics of shielding gas delivery. Unlike standard collet bodies which can create turbulent gas flow, the 45V29 utilizes a multi-layered fine mesh screen to rectify the gas stream into a coherent, laminar column.

This laminar flow is essential for industrial applications requiring stringent weld quality. By smoothing out the turbulence, the gas lens ensures that the weld pool is protected by a stable envelope of inert gas, even at longer stick-out distances. This capability allows the operator to extend the tungsten electrode further past the nozzle cup, providing superior access to difficult-to-reach joints such as inside corners or deep fillets, without compromising the integrity of the shield. The reduction in turbulence also minimizes the entrainment of atmospheric contaminants like oxygen and nitrogen, which are the primary causes of porosity and oxidation in sensitive metals like stainless steel and titanium.

Manufactured from durable brass and copper alloys, the 45V29 is built to withstand the thermal cycling inherent in welding processes. It acts as a direct replacement for standard bodies but requires the use of compatible gas lens ceramic cups (typically the 54N series) and a specific insulator (54N01) to function correctly. For professionals seeking to elevate their weld consistency and aesthetic appearance, transitioning to a gas lens system is a technically sound upgrade.