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When the check valve failed to seat properly at the lower unit in our well, the reserve tank would drain down quickly and then the pump would run again and again and again, . . .

If you have a valve between the pump outlet and the tank you can turn it off to check operation of the tank. Most likely your valve has failed.

It did this very often until we had the entire mechanism in the well replaced and installed a submersible pump.

No problems since and the submersible pump is hardly audible compared to the old pump motor which was mouted near the well head in the basement.

Good luck. Bob Jarnutowski bobjarn (at) hotmail.com

Ans 2 - A deep well pump does not have a'foot valve' -they are only on a jet pump. You have NOT told us the exact problem. If the bladder tank is not holding water then you may have a faulty check valve on top of your deep pump. Splits in the pumpdrop line down the well are also common. -The bladder in the tank can also be faulty. -You must tell us ALL symptoms , not just ask about two things you've heard names of.

Best solution - call a well tech , NOT a plumber !

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11y ago
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13y ago

If you have a two inch or larger well, it is customary to have a foot valve at the 30 foot level in the well. In order to see if it's leaking you would have to pull it from the well by the pipe it is hanging on. If you don't pull the Foot Valve, you could have a bad valve, bad pipe (holes from electrolysis, acidic water) or a leaky joint. So you can't tell without pulling the entire column of pipe to inspect it and the Foot Valve.

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Q: How do you determine if the foot valve is bad in a deep well pump or if there is a problem with the bladder tank?
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Deep well submersible pump low pressure?

The wording of this question assumes the low pressure is not associated with a tank problem, or a control box problem. A few problems can cause low pressure from a submersible pump. The commonest that I've seen is a split in the pipe down the well, or a failed check valve immediately above the pump. ( all sub-pumps have a check valve to prevent 'run back' -these eventually corrode if cheaper types are used ) To fix this, it's necessary to pull up the pump and pipe and physically inspect the pipe, then cut out the split section or check valve and replace it with new parts. -The third, less common problem is the rotor vanes in the 'wet' side of the pump can simply become so eroded and worn that they will no longer pump at high pressure. The fourth, of course is motor failure and this can be determined with an ammeter at the surface. One other and very unusual problem is the sub-pump 'locking up' with silt. -I would rate this as less than 1 % of pump problems - this too can be detected from the surface with an ammeter.


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A hydrostatic relief valve prevents your swimming pool from wanting to become a 'boat'. If the bottom of the pool is below the level of ground-water, and the pool is emptied, the pool would want to float in the underground water. I have actually seen the deep end of a 40ft gunite pool (with no hydrostatic valve) rise out of the ground (by 18") when the pool was emptied for repairs. A hydrosatic valve would have opened (and allowed the underground water to flow into the pool) when the water pressure beneath the pool became greater than the water pressure in the pool. I am not sure if you can manually test the valve, so check with the supplier/pool builder. A hydrostatic relief valve is located in the deepest part of your pool. It may be under the maindrain cover or in its own little box on the bottom of the pool. The purpose of the hydrostatic relief valve is to relieve a build up of pressure if it occurs from underneath the pool. If the water were to be removed with a high water table then the pool may float up out of the graound like a barge. You then have a big problem on your hands. The fhydrostatic relief valve will open allowing the ground water to enter the pool to keep the equalibrium and to relieve built up pressure from underneath the pool. The valve typically does not need any maintenance. However, if the vavle has opened then there is a chance that a tiny particle could get stuck in the seal when the valve closes again. The tiniest particle (which may not even be seen) could allow water to seep out of the pool into the ground. There's a lot of water in the pool and each gallon of water weighs 8.33 pound. A typical residential pool of 20,000 gallons holds water weighing about 166,600 pounds. A commercial pool of approximately 120,000 gallons has water weighing approx. 1 million pounds. Removal of this much weight obviously changes a lot of things. You need to be very careful removing water from a pool. Things to be concerned about are high water table, underground springs, rainy weather, hills behind the pool. Please write if there are any other questions. Steve Dunn Certified Pool Instructor Consultant & equipment distributor Commercial Pool Systems, Inc. FURTHER ANSWER When you find your pool losing water and don't see any obvious place, it may be the hydrostatic valve has lifted and then not seated properly. The valve needs to be flushed by being lifted momentarily. I have done this by donning a mask and with fins and weights swum down, removed the grate, and lifted the valve by hand. If you have never seen such a valve find one in a swimming pool store and see how it works. Also, be sure there is not a lot of trash in the fixture near the valve or again it may not seat. Best to do this with the pump off if the valve is in the drain box or you may get caught by the suction. This can lead to serious death! Paul Delage


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What is causing low water pressure in house and pump to constantly buzz in a deep well?

I do not know your situation but a good guess is that your well pump is always on and is not getting enough pressure to shut off the pressure switch. So I would shut off the power to your well pump and see if the buzzing stops and if it does then I would replace your well pump. If the buzzing don't stop with pump shut off then it could still be your well pump check valve slowly leaking threw but I think its your pump because its not pumping enough to shut off with or with out a bad check valve.

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