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Country Talk Discussion Board

Re: about Bills water prob

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Posted by Willy-N on January 27, 2005 at 06:52:59 from (

In Reply to: about Bills water prob posted by ret on January 27, 2005 at 06:26:18:

Since water is non compressable you need the bladder or air chamber to allow the pump to build up a reserve to draw on. Being non compressable as soon as you open the spicket the pressure will drop to zero till the pump turns on and builds up a flow. As soon as you shut off the valve the pressure will jump up to what ever the pumps cut off is and stop with a hammer effect sometimes causeing the pump to cycle real fast till it evens out. The hammer effect will cause a pressure/vacume affect on the pumps pressure switch and chatter it off and on for a while. The air chamber is a shock absorver for the water allowing a slow cut off of the pump. You can bust a pipe with out it due to the shock action of the water hammering the pipes. If you were to just run the valve wide open the pump would just deliver the water at it rated flow. The problem happens when you only run a small amount of water much less than the pump puts out or shutting off the valve. Mark H.

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