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You are here: Home > Info about Water Cooler Pumps
Which Welding Water Cooler Pump is the best - A vane Pump or a Gear Pump?
We sell the Dynaflux brand of welding water coolers and they offer both vane pumps and gear pumps for their torch coolers. What is the difference? Which is better?
Vane pumps have become standard in the welding industry for welding water coolers because they perform well and are quiet. These pumps are typically manufactured by Procon and are similar to those pumps used for carbonators on drink machines. See photo 1 below. These pumps are durable, but require a torch coolant be used that has some sort of pump lubricant to keep the pumps performing well. If water is used the pump life is usually short.
We sell the Dynaflux torch coolant, which is a mixture of ethene glycol and distilled water. This coolant helps to extend pump life by lubricating the pump and keeps the system from freezing in cold weather.
Photo 1, Typical Vane Pump
Gear pumps were once commonplace on Miller water coolers, but recently the manufacturer has been using vane pumps to make their water coolers quieter. See photo 2. The gear pumps are very durable and will operate well even if there is no lubricant mixed with the water in the system. The downside of gear pumps is that they can be a bit noisy. The gear pump would be a good choice if your system has a special requirement to use water only, and not a coolant mix. If a coolant mix is used these pumps should last a long time.
Re-build kits are available for gear pumps. Vane pumps are available rebuilt or new (with a core charge).
In summary, mixed coolant should be used in any welding water cooler unless there is a special requirement. Both vane pumps and gear pumps should provide good service, with gear pumps being a little more durable.