
06/21/10, 09:17 AM
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Moderator
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Join Date: Jul 2006
Location: WISCONSIN
Posts: 6,694
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we have them in the city here , but not hooked up to the city water , our water table is about 15-17 feet down and people drive sand points in thier yards , usualy an electric pump is them added for watering the garden but the comuninty gareden has a simple pitcher pump on their point
in a pitcher pump you have a cilinder with a ruber seal that rides up and down , on the up the ruber washer flaps fite against a metal plate and seals to the cilender wall and as you pull up it creats vacume and lifts water up then on the down , because there is a 1 way valve placed below the pitcher pump the water can not go down the rubber flaper / seal flaps up and water rushes around it filling the cylinder above the seal then wen lifting up again the water above the seal is lifted to spout hight and flows out at the same time you filling the area below the seal with more water that will be lifted out on the next stroke.
if you hooked it to a city water pipe the preasure would push water out all the time so lets say you put a valve in below it and keep it off till the power and pumping station go down , then open the valve and try an pump you would maybe get a little but unlike th eground th epipes are sealed and you would only be able to get a little at most if you had you neighbor on top of the hill next to you cut his water meter out to allow air in you might be able to pump more of the water sitting in the pipes out , water meters are almost always one way valves they don't want your water back to contaminate the city
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