He can't remove the check valves. He has TWO pumps, a main pump and a backup pump. With no check valves in place then most of the water will just backfeed through the non-running pump right back into the pit.
He can't remove the check valves. He has TWO pumps, a main pump and a backup pump. With no check valves in place then most of the water will just backfeed through the non-running pump right back into the pit.
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