K2504-1 - Lincoln PTA-26V Air-Cooled TIG Torch with Valve, 200A, 12.5ft

Technical Overview of the Lincoln PTA-26V

The Lincoln Electric PTA-26V (K2504-1) is a heavy-duty, air-cooled TIG torch engineered for professional industrial applications where water cooling is not feasible. Part of the Pro-Torch™ TIG family, this model is specifically designated as the "Pipefitter Special" due to its robust configuration and suitability for field environments. The torch is rated at 200 Amps at a 60% duty cycle, providing significant welding power for an air-cooled unit, allowing for the welding of thicker sections of carbon and stainless steel without the logistical burden of a water cooler.

A defining technical feature of the K2504-1 is the "V" designation, indicating a manual gas control valve integrated directly into the torch body. This valve provides the operator with complete authority over shielding gas flow, a critical requirement when utilizing power sources that do not possess an internal gas solenoid, such as many engine-driven welders or stick welding machines used for scratch-start TIG. The valve mechanism is designed for easy operation with a gloved hand, ensuring gas can be turned on prior to arc initiation and shut off immediately after post-flow requirements are met.

The torch assembly includes a 12.5-foot (3.8 meter) one-piece power cable. This cable design combines the power conductor and gas passage into a single durable line, reducing weight and drag compared to two-piece systems. The torch handle is constructed with a knurled pattern to maximize grip stability and minimize operator fatigue during positional welding. Furthermore, the handle features a molded ridge specifically designed to secure a zippered cable cover, protecting the power cable from abrasion, hot surfaces, and sparks common in pipefitting environments. The head is a standard rigid style, compatible with widely available 3-Series (17, 18, 26) consumables, ensuring ease of maintenance and parts sourcing.