What is a key characteristic of water-cooled torches?

Water-cooled torches are designed specifically to handle high current applications, which makes them particularly effective in preventing overheating. The water-cooling system circulates coolant through the torch, dissipating heat that builds up when higher amperage is used during the welding process. This capability allows for longer periods of operation without the risk of damaging the torch or affecting the quality of the weld due to excessive heat.

Other options may offer different benefits, but they do not capture the primary function and advantage of water-cooled torches in demanding welding scenarios. For instance, while they might be lighter or have a fast cooling capability, these features are secondary compared to their efficiency in managing heat during heavy-duty use. Cost might also be a consideration, but it does not directly relate to their performance in high-current scenarios.