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Submersible well pump is drawing air into house water lines. Typical cause?
I've recharged the well tank air pressure to 30psi after draining, repressurizing and purging the air from the pipes. But the air in the lines keeps coming back for the last several months.
Vince J's answer would seem to be true in my case because the problem comes and goes with time. So maybe it's only when we're using a lot of water that the well level falls low enough that the pump starts sucking air. Otherwise, the pipes are getting at least some water pressure after the pump, so it seems the air leak would have to be before the pump. I don't know whether my submersible pump has an anti drain back valve, but besides lowering the pump in the well, I will ask about the drain back valve. Thanks to all because you all led me through the thinking I needed to do to solve the problem.
5 Answers
- Don SLv 61 decade agoFavorite Answer
Here are some possibilities. Your pump is drawing the water level down below or close to the pump level in the pipe and you are pulling air in with the water. You have a loose connection at your infeed side between the pump and the pressure tank. Your tank bladder lining has a leak allowing the pressurized air into the system. Your checkvalve at the pump is not working, (or not present), allowing the water in the line to flow back down into the well drawing in air.
Source(s): used to have one - Vince JLv 51 decade ago
Hey Bob one of the other guys has it right, the only way a submersible pump can introduce air is not be completely under water. A leak in the pipe above the pump would leak water but would not be able to introduce any ait at all due to the pressure. If it wasn't submerged a foot valve could allow drain back resulting in air and spurting pressure.
- Anonymous1 decade ago
I *do* believe that the only way a *submersible* well pump can introduce *air* into your water supply piping system is for it to intermittedly *NOT* be completely submersed in the water of your well.
*I* think that you need to have a recommended, licensend water well operator come out and run a "draw-down demand" test on the water sand supply of your well, and "go from there"!
Source(s): Many, *many years* of personal experience!
