at uni we had to make a pump to do 10m of head. Some of the best were reaching over 70lpm (100mm impeller with 200w + motor). The exits of those could only have been 3/4inch and we used normal clamps and stuff. Either way nothing should explode or go crazy. The amount of restriction in any computer watercooling loop will definitly kill the flow of even a mighty pump like this.
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