18 Series (350A) Trim Line Water-Cooled Torch f/HTP America® Invertig 313 & Invertig 400 Welders Using a Smart Water-Cooler

18 Series (350A) Trim Line Water-Cooled Torch f/HTP America® Invertig 313 & - Main image

$224.37 ~~$329.95~~ In stock

18 Series (350A) Trim Line water-cooled TIG torch for HTP America® Invertig™ 313 AC/DC and Invertig™ 400 AC/DC TIG welders. For use with our smart water-coolers. Includes a 35 Dinse (1/2") power connection, 1/4" BSP gas connection, and 9mm quick connect/disconnect water connections.

Available with a standard rigid neck or a flex neck and in 12.5' and 25' lengths. Includes a long back cap and a heat shield. Collets, collet bodies, alumina cups, and tungsten sold separately.

For consumables, please visit the following links:

18 Series Water-Cooled Alumina Short Consumables

18 Series Water-Cooled Alumina Standard Consumables

18 Series Water-Cooled Gas Lens Consumables

18 Series Water-Cooled Pyrex Large Diameter Consumables

18 Series Water-Cooled Pyrex Short Consumables

18 Series Water-Cooled Pyrex Standard Consumables

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Customer Reviews (5.0 / 5 · 5 reviews)

Joshua ★★★★★ Oct 22, 2026

Dropping the 35 Dinse connection into my Invertig 313 was a perfect fit with zero fuss. The trim line design really helps me see the weld puddle clearly even in tight spots. This torch handles the 350 amps without breaking a sweat.

Carter O. ★★★★★ Oct 21, 2026

The water cooling on this torch is the real deal—I ran a solid hour of 250A work and the handle stayed cool enough to hold without gloves. The 35 Dinse connector seated firmly on my machine with zero wobble, and the 350A rating gives me plenty of headroom for thicker aluminum.

Samuel I. ★★★★★ Oct 20, 2026

The 35 Dinse connector made swapping it onto my Invertig 400 a breeze, and the water cooling keeps the torch head comfortable even during longer weld passes. Fit and finish feel solid for the price point.