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Featuring helpful chiller resources, product information and news

Open vs. Closed Expansion Tanks - Which Fits Your Needs?

By Tom Snow, CEO, T.J. Snow Company

Long known as water hogs, resistance welders are widely used in factories that manufacture products made from sheet metal and wire. Sub-categories of the resistance welding process include spot welding, projection welding, seam welding, butt welding and flash welding.

An adequate flow of cooling water is one of the most important variables of the resistance welding process, and the typical machine requires 2 to 3 GPM of water per cooling circuit.

Since there are often several parallel circuits per machine, the total water flow needed can be substantial. As an example, the water cooling needs of special-design automated “multi-gun” resistance welders with multiple transformers and tips can easily total 10 to 20 GPM….read more….

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