I'm designing a bucket pump for a water well I'll be attaching a pumpjack to. I'm just a regular shop guy so I was kind of stumped on a question of how much upward pressure will be required to move the water up the drop pipe. If the pump cylinder is the same diameter of the drop pipe I figure I'll need to move the entire weight of the water in the pipe BUT I plan to have the cylinder actually only about half the diameter of the drop pipe. My question is if I have a 2 inch pump cylinder (2 feet long) tapering out/upward to a 4 inch drop pipe will I need to ad the weight of the water in the cylinder to the entire weight of the water in the 4 inch drop pipe? I'm not a physics guy so I wasn't sure if there is some law here I don't know about to figure this one out. Would the entire weight of the 4 inch drop pipe water no longer be needed to move it upward since the pump cylinder was more narrow? Thanks for you help in advance.(adsbygoogle = window.adsbygoogle || []).push({});

Tom

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# Pump water weight upward pressure needed

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