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Old October 9, 2016   #23
Worth1
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Join Date: Feb 2006
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Another use for mag drive pumps is for chemicals that absolutely cant be allowed to escape into the environment.
The impeller itself is the same as any other pump from what I have seen.
I have also seen even more complicated pumps in the industry to avoid leaks.
The heating of the water is from cavitation many due to the impeller being ran too fast or the water flowing too fast.
I have seen 1 inch thick valve bodies eaten completely eaten through in just a few months due to this.

Here is a short video explaining the mag drive pump showing how it works.
Pay close attention to how it cools itself with e the fluid it is pumping.
If for any reason these pathways get stopped up the bearings will burn up.
Worth

https://youtu.be/fFXTioC1oJQ
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