I recently heard of an incident where the fire water return from a flow meter on a fire pump was connected low from a tank and it did not work appropriately. So as a solution they decided to connect it high on the storage tank a and somehow this configuration fixed the issue.
Both connections would have the same head due to elevation so it does not make sense to me why one would work but not the other.
Why does it matter if you connect a return loop to a fire water storage tank near the top of the tank rather than near the bottom?
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