Torches are available in two cooling configurations. Which pair is correct?

• A. Oil cooled and air cooled
• B. Liquid nitrogen cooled and air cooled
• C. Air cooled and water cooled
• D. Water cooled and oil cooled

Answer: (C)

TIG torches used in GTAW are designed to be either air-cooled or water-cooled. Air-cooled torches rely on ambient air to carry away heat, are lighter and simpler, and suit lower current welding or shorter durations. Water-cooled torches circulate water to remove more heat, allowing higher amperage and longer welding without overheating. Among common options, the two cooling configurations you’ll actually see are air cooling and water cooling. Oil cooling isn’t standard for TIG torches due to contamination risk and lack of need for that level of cooling, and liquid nitrogen cooling isn’t a practical method for torch cooling. So, air-cooled and water-cooled is the correct pairing.