I know little about well pumps.... customer wants me to install a pump from his boat dock on the lake to pump water up the hill for irrigating his lawn. This is a reservoir lake. The lake level varies as much as 30 ft although normal seasonal variation from spring till fall is 14 ft. Water will have to be pushed up the hill .... not sure but I'm guessing a 40 ft vertical lift until I am able to survey the change in elevation.... (this would give a total 70 ft lift possibly required if the guess is close to accurate).
Question... how much pressure should I consider for the height (or pressure per ft of height)? I am assuming that the pump should deliver 20 psi at a minimum when the lake is at it's lowest level...but would appreciate someone giving me the information to calculate the difference at various lake levels....and any good suggestions on parts to put this system together... I only have to install the pump and drop a pipe in the water to suck up the lake water... I assume I should install a foot valve and might be able to use a shallow well pump on top of a small pressure tank....maybe it's a Sears item....any info will be appreciated... I'll be checking with my plumbing supply house as well.
Question... how much pressure should I consider for the height (or pressure per ft of height)? I am assuming that the pump should deliver 20 psi at a minimum when the lake is at it's lowest level...but would appreciate someone giving me the information to calculate the difference at various lake levels....and any good suggestions on parts to put this system together... I only have to install the pump and drop a pipe in the water to suck up the lake water... I assume I should install a foot valve and might be able to use a shallow well pump on top of a small pressure tank....maybe it's a Sears item....any info will be appreciated... I'll be checking with my plumbing supply house as well.
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