My pressure tank is full of water and the pressure is down to 0 and I can't drain the tank?

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Irebel

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My pressure tank is full of water (it shouldn't be that full) and the pressure is down to 0 and I can't drain the tank? My water pressure has been slowly getting weaker over the years. And yesterday it went right down to a trickle. So we decided we should try a couple of things first before getting too excited. First thing was drain the tank and replace the pressure switch. Only thing is we can't figure how is to empty the pressure. Tank. It is in the crawl space. Anyways we ended up putting a self tapping valve because we didn't want water all over if we cut pipe. But as it turn out hardly no water came out of the tank. Which is really baffling us. We turned off the water from the well to the tank and from the tank to the house. and of course we left the new valve open. We turned off the electrical to the pump also. We thought if we added pressure in the tank that it would help push some of the water out but nothing came out except the initial amount that came out at the beginning. I do think the pump is shot. But for the life of me I can't understand why we can't get rid of the water in the tank. with all the valves open oor closed no water comes out at all now. By the way the tank does seem to be holding the pressure we pumped into it this morning. I don't know what it is. I thought maybe it's the Air pressure is holding the water in the straw (tank) scenario? I'm just guessing :) If anyone knows I would greatly appreciate the answer. TIA :)
 

WorthFlorida

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There is no water inside the bladder to drain because the bladder has fully collapsed. All the water is on the outside of the bladder and was working like standard non bladder tank. When you drawn water, the pressure pushed the water through the tear. Now as you stated you have the drinking straw issue. You'll need to use the schrader valve and a small air compressor to push the water out.
 
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Bannerman

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The water that initially exited from the tank after adding air, had been within the tank's water chamber, where water should be only located.

Once the water in the water chamber had exited from the tank, the air deflected the diaphragm/bladder down to the bottom of the tank, effectively sealing off the connection port at the bottom. The water that had leaked through the defective diaphragm into the tank's air chamber, now can not exit through the sealed connection port.

There are two possible methods to drain the tank.

One method would be to fully disconnect the tank, thereby allowing a blunt stick to be inserted through the open bottom port to push the diaphragm upward to unblock the opening to permit water to exit. Contingent on the size of the hole through the diaphragm, it may take some time for the water to exit, and additional air will need to be periodically added.

Depending on the tank model, with a defective diaphragm/bladder, it is likely the tank will require replacement. For a tank to be replaced, an effective method to drain to allow removal, will be to drill holes through the tank's outer shell, above the diaphragm/bladder seam, thereby providing openings for the water in the air chamber to drain out.
 

Valveman

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If the pressure tank is full of water the pump should be cycling on and off as fast as fast as you can say "click, click, click". So called "normal cycling" is what caused the bladder in the tank to tear. Then the loss of air causes the fast cycling which will make the pump shut off, causing a trickle and zero pressure. Hopefully the pump is not dead yet, just on its way. Replaces the tank with a PK1A kit, which will eliminate the cycling and make the pump last longer.

 

Irebel

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There is no water inside the bladder to drain because the bladder has fully collapsed. All the water is on the outside of the bladder and was working like standard non bladder tank. When you drawn water, the pressure pushed the water through the tear. Now as you stated you have the drinking straw issue. You'll need to use the schrader valve and a small air compressor to push the water out.
Thank You! :) now that makes complete sense. We did buy a tank just haven't changed it yet. Thanks again and I hope you have a great weekend!! 3 guess what we are doing this weekend? lol
 
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