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well question
Chas Hurst wrote:
"rb" wrote in message . .. At the top of a 40' well, we have a check valve prior to pump. With the check valve below the pump, can a hand pump be put on and used with the electrci pump? Probably, but you will need a check valve between the hand pump and the user for the electric pump. In other words, the check valve there now keeps the water from flowing back into the underground reservoir. When you add the hand pump, you need to add another check valve in the pipe going to it to prevent the electric pump from sucking air through the hand pump instead of water from the ground. Both check valves are to stop back flow. I'm assuming you want a way to get water when power is out?? Tom J |
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