Irrigation pump

Old 04-29-08, 06:09 AM
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Irrigation pump

I just installed a single drop jet pump system on a well that was drilled 7 years ago. Its a Goulds 1hp horizontal pump with a 5 gallon storage tank. I had no problem getting the pump primed and it stays primed, but I have very little water volume. The storage tank will discharge and pressure will drop to 0. Shut off supply and it will pressurize again. I checked the volume and I get about 2.5gpm. The water is cloudy with sediment. Ive let it run long periods at a time to clear it up but it is still cloudy. The well tag info said 5gpm. Static water level 11ft. Well depth 48ft. My foot valve depth is 35ft. Thanks for any suggestions.
Old 04-29-08, 06:45 PM
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Well may be plugged or filled in.

I suggest you disconnect the pump and run a garden hose in the well and hook the other end to a faucet or another pump and wash the well out to the bottom. Be sure to measure the depth at start and again at the finish. Go slow to be sure the hose doesn't get stuck in the well. When finished hook up the pump and see if that helps.
Old 04-29-08, 08:14 PM
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Hello, try this.

Set the tank pressure 3 lbs. under the cut-in pressure of the pump. eg. 20/40 pressure switch setting = 17 psi on the tank.

I also think you should increase the size of the tank. Your pump must come on almost immediately when you run water. A larger tank would give you longer on/off cycles and less wear and tear on your pump.

As far as the dirty well. A well driller once told me the first 100' down is where most of the bad water comes from.

You should also ask a well driller, plumber, pump installer, or a plumbing house about your pump. Seems kinda extreme to me. But I am not perfect at pump sizing.

Good luck, Mark

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