What types of torches can be used for the basic GTAW system?

• A. Gas cooled
• B. Water cooled
• C. Air cooled
• D. Water cooled or air cooled

Answer: (D)

In GTAW, how the torch is cooled determines which types you’ll use. Torches are either air‑cooled or water‑cooled. Air‑cooled torches are light, simple, and work well for lighter tasks and lower current because ambient air helps dissipate the heat. Water‑cooled torches circulate coolant through the torch to remove much more heat, which lets you weld at higher currents or for longer periods without overheating the torch.

Gas cooling isn’t a standard category for GTAW torches—the shielding gas protects the weld, but it isn’t used to remove heat. That’s why the practical options you’ll encounter are air‑cooled or water‑cooled, chosen based on the current level and how long you’ll weld.