Won't hold pressure

Discussion in 'Pumps and Tanks Well Forum & Blog. Water is life.' started by stevepek, Jun 9, 2007.

  1. stevepek

    stevepek New Member

    Jun 9, 2007
    I just redid my whole shallow well system. 4' drive point with 2" galvy pipe down 30'. Same location and depth as the old one. I put a new 42 gallon pressurize holding tank in and all new gauge's, pipe, check valve, elbos...etc.
    I half a 1/2 hp goulds jet pump. I took the impeller housing apart and cleaned all the rust out. I replaced the impeller and the ceramic seal setup. Hooked it all up, primed it, pumped water, adjusted to 40-60 psi, tank has 38 psi when empty. Problem is that if the pump sits for 15 minutes. The pressure gauge remains at 60 psi....seems not to lose of pressure. I will turn the water on and the pump will kick on at 40 psi and will slowly start dropping pressure. By shutting off the water and letting it it repressurize, bleeding the air out with the faucet, the pressuse will build itself back to normal. Will run forever until I let it sit. Can't find any leaks. Maybe someting in the impeller housing? Any help appreciated.
  2. ecpgroup

    ecpgroup New Member

    Jun 12, 2007
    when you say it will run forever do you mean it wont cut out again?
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  4. Cass

    Cass Plumber

    Nov 12, 2005
    Did you install a new pressure switch and did you clean out the 1/4" pipe that it screws on to?
  5. sammyhydro11

    sammyhydro11 In the Trades

    Dec 20, 2006
    Well Drilling-Test Borings-Water Treatment-Well an
    Sounds like an undeveloped well or possibly a vacuum leak. How many and what type of fittings are between the well head and the suction end of the pump? Did you develop this well prior to plumbing in the pump and tank. How much water does the well produce? What is the water depth depth in the well?

  6. speedbump

    speedbump New Member

    Jul 15, 2005
    Water well and pump tech.
    Riverview, Fl.
    In one statement you said it pumped up to 60 psi. Then you say it runs forever until you let it sit. What do you mean by that?

    Answer Sammys questions too, they are important.

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