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Thread: Water Pressure Problem/Well

  1. #1

    Default Water Pressure Problem/Well

    I have a 40/60 pressure switch. I turn on my water and watch my pressure gauge. At approx 50 psi, water flow stops. Gauge continues to decrease and at 40 psi well pump kicks on, water flow returns and all is good. Pump turns off at 60 psi. Increase pressure into empty tank to 2 psi less than switch and problem gets worse, run out of water quicker but pump turns on at 40psi. Any ideas, I serviced pressure tank empty, decreased pressure down to approx 20 psi and am back at square one.

  2. #2
    Moderator valveman's Avatar
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    Sounds like you have a busted bladder in the tank, and adding more air decreases how much water the tank can hold. I will bet that when you think the tank is empty, it is still very heavy.

  3. #3

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    Believe it or not, when the water flow stops, I can move the tank very easily. For the most part it appears to be empty. This is what is baffling me. Also, the tank is only about 5 years old, with no exterior signs of any problems. Now, I don't know if a ******* brand tank is extremely poorly built. I'm stumped.

  4. #4
    That's all folks! Gary Slusser's Avatar
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    You didn't say what kind of pump you have, jet or submersible. If a jet, the switch may not be seeing the pressure changes in real time. The water line tubing to the switch, the switch and the tubing fittings and the holes they are screwed into may be blocked with rust. The gauge may be also.
    Gary Slusser Retired (= out of business)
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    CAUTION, as of Nov 12 2013 all YouTube videos showing how to rebuild a Clack valve have an error in them that can cause damage.

  5. #5

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    I have a submersible pump. Unable to give you any information about it as to hp and well depth. Little more info though. If I disable pump and run all water out of tank, with faucet open, pressure on gauge will drop to zero. At 40 psi, pressure switch will click. If I close the faucet off, gauge will begin building pressure??? Remember the pump is still off. Another thing, my wife replaced the tank 5 yrs ago. When I moved in, I replaced the switch from a 20/40 to a 40/60 for more pressure. Has worked great for 3 yrs until now. I also adjusted tank pressure at that time. Do the holding tanks come set for the prssure switch your going to install?? So basically did I screw up the tank as it was precharged for a 20/40 and then I adjusted for a 40/60??

  6. #6
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    It sounds to me like you have a filter somewhere that is plugging up. If you have 50 pounds of pressure in your plumbing but the water stops flowing, that tells me you don't really have 50 pounds everywhere. Probably just on the inlet side of a filter.

    If you want to know all about bladder tanks read my FAQ's.

    bob...

  7. #7

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    No filters in system, just a water softener downstream and a stright tap to outside spiggot.

  8. #8
    Test, Don't Guess! cacher_chick's Avatar
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    I think Gary is right. Take the tank tee apart and clean out all the ports to the pressure switch and gauge.

    Also verify your bladder air pressure setting with an air gauge that is known to be accurate. Cheap tire pressure gauges can vary from actual by 10psi right out of the box.
    If the switch is set to cut-on at 40, the air pressure should be set to 38.

  9. #9

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    My air pressure gauge isn't a cheapo, as I'm an aircraft mechanic by trade, not trying to sound prude and I did set it to 38 psi originally when I changed out the switch. I have another twist as to my problem, this only occurs when I turn on my high flow faucets( tub and washing machine). I truly appreciate all the insight you guys have given me, and I'm going to check the piping as it wasn't changed when the tank was.

  10. #10
    That's all folks! Gary Slusser's Avatar
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    You may be using more water than the pump can keep up with and the pressure goes to 0.

    Have you by passed the softener to see what happens?
    Gary Slusser Retired (= out of business)
    Click Here to learn how to correctly size or program a water softener.
    CAUTION, as of Nov 12 2013 all YouTube videos showing how to rebuild a Clack valve have an error in them that can cause damage.

  11. #11

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    Problem happens before pump kicks in. The pump and switch seem to operate normally. It only goes to zero if I disable pump and completely drain system and leave a faucet open. Quick question, when servicing tank with air, should faucets be open or closed???

  12. #12
    That's all folks! Gary Slusser's Avatar
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    There are instructions at the top of this forum but...

    You drain the tank and set the air pressure 1-2 psi less than the turn the pump on switch setting. I.E. 40/60 gets 39-38 psi with no water in the tank. That insures that you get the correct volume of air in the tank so the 'bladder' stretches and contracts the correct amount. If you can't drain the tank, leave a faucet open and then shut it before turning the pump on.

    At higher pressures, you get less water out of the tank before the pump comes on.

    The pressure goes to 0 when you shut the pump off and run water... it can't do anything else. So don't do that if you want water.
    Gary Slusser Retired (= out of business)
    Click Here to learn how to correctly size or program a water softener.
    CAUTION, as of Nov 12 2013 all YouTube videos showing how to rebuild a Clack valve have an error in them that can cause damage.

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