I would guess he wants to test his motor or air compressor without burning out his pump seal. I've ran mine before just by squirting water into the pump inlet without all of the adapters. All you need to do is keep the seal wet to keep from damaging it. Leonard
Ah I see....I was thinking he was trying to disguise his dredging operation for a crop watering type operation but the garden hose was on the wrong side, anyways won't work anymore in Cal. We got alot of that round these parts.