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Author:
Lilouie65 (NY)
I have replaced the well line, pump, & seal on check valve & still getting air. The holding tank is very old but from what I can tell it's still working. I didn't replace the line going to the house however. Any suggestions, where the problem is?
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Author:
m & m (MD)
It can often be at the pitiless adapter- either the o ring or the insert adapter.
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Author:
Lilouie65 (NY)
I forgot to mention, the air in the lines is not every time. It can go couple of days to couple of weeks without any air in the lines. Then have a lot of air in the lines for awhile before it subsides.
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Author:
Ridgidman (VA)
I would start with your well pump. You will need to know the static water level in your well. This is the level that water was first encountered when your well was drilled. Well drillers do not stop drilling when they first locate water. They drill deeper so that an adequate reservoir of water is available. The static level can change over time and with the seasons. You can find out the static water level in your well from a well drillers report, or you could use an electronic well sounder, or you could use the old string and washer method. Next, find out the depth of your pump. Is the pump below the static water level? Is the pump halfway in the water and halfway out? Is the pump below the static level, but when the pump is on the well can't recover fast enough? If your pump sucks out the water in the well (the drawdown) before your well can recover you will get air in the lines. In other words, the drawdown level would be just under the water intake of your pump. To fix this you can try lowering the pump down deeper into your well.
Next, I would look at your check valve. If your check valve is faulty or installed incorrectly this would allow water to flow back into your well. Thus, you would wind up with an air pocket in your piping. Here is what to do: Allow the pump to fill the pressure tank to the point that the pressure switch trips the well pump off. Then cut the power to the well pump and watch the pressure gauge on your pressure tank. Wait 20 minutes without using any water inside your home. If the pressure on the gauge falls you could have a faulty check valve.
You may also have a very small leak in the riser pipe above your check valve. This would be more difficult to pinpoint but could be a source of the air. As the previous person pointed out: It could be coming from a bad seal on your pitless adapter.
Check around your pressure tank and inside your home for small leaks. Anywhere water can escape air can also enter.
If you have an old galvanized steel air tank this could be the cause of air in the piping. The older galvanized steel tanks did not separate the air from the water. The modern tanks use a bladder so that the water and air never touch. If you do have an old steel tank, and it is overcharged or your water level is low when your air pressure is high you can get air in your lines.
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