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Thread: pressure tank losing pressure

  1. #1

    Default pressure tank losing pressure

    I am fairly iuneducated about plumbing but do have the ability to fix something if i know what is wrong. My wellmate WM-9 captive air tank is losing pressure. Starts at 30 and stops at 50, then slowly lowers in pressure to 30 again, well pump kicks on for less than 1 minute ... repeats same procedure approx every 15mins. I have no leaking toilets and checked bladder pressure and is at 28psi.

    Already drained tank and checked pressure... bladder does not seem to be leaking. i do not want to burn-out my well pump so help if you can! THANKS!

  2. #2
    Moderator valveman's Avatar
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    Something is leaking!! If you have a valve to close and make sure it is not leaking in the house, then the leak will be underground or down the well. Probably a check valve on the pump itself, sorry!

  3. #3

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    I'll check for valve leaks in the house, if not will i have to buy a new pump or is it fixable if valve is leaking on pump itself. it is a deep well pum i believe. thanks!

  4. #4
    Moderator valveman's Avatar
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    If the leak is down the well, you will have to pull the pump to find out if it is a bad check valve or a hole in the pipe. You shouldn't need a new pump, just fix the leak or replace the check valve.

  5. #5

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    WELL, CHECKED EVERYTHING i COULD. CALLED GUY OUT AND FOUND NUMEROUS HOLES IN STEEL PIPE AND WATER PUMP WAS SHOT (20 YEARS OLD!). NEEDLESS TO SAY... IT WAS EXPENSIVE. 100 + FOOT OF NEW PIPE, NEW WELL PUMP.... LABOR...OUCH!!!!!!!

    THERE GOES THE DOWN PAYMENT ON MY NEW KTM SUPER DUKE

  6. #6
    DIY Senior Member Mr_Pike's Avatar
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    Just as a reference for those seeing the same symptoms as the person above. Once you isolate the house from the system, and it is losing pressure, go put your ear on the top of the pitless (well head that sticks out of the ground outside) and listen for a hissing noise. You can take the lid off carefully and listen as well. Leaks in the couplings or pipe are very audible.

    A bad check valve on the pump will sometimes create a whistling noise if these is another leak to suck air through.

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