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  1. #1
    Gold Member
    Join Date
    Dec 2005
    Posts
    431
    Location
    Sierra Foothills
    Tractor
    2005 MT265B

    Default Water line and storage tank question?

    This is a plumbing question.... I plan to install a water storage tank about 25' above the well and run 2" water pipe down to the home site. Do I need to run 2 separate water pipes? 2" connect to the bottom of the tank and a separate 1" line to the well pump for filling the tank from the top? All the pipes will be in the same trench. We are talking about an extra 100' of 1" pvc pipe. Is there any advange for running the extra 1" fill line to the top of the tank? I do have check valves to keep water from flowing back into the well. How reliable are check valves? Thanks for your comments.

  2. #2
    Veteran Member
    Join Date
    Nov 2003
    Posts
    1,310
    Location
    Tombstone Az
    Tractor
    KIOTI LK30

    Default Re: Water line and storage tank question?

    You do not have to run two pipes. You can tee into the same pipe used to feed the house and it wil fill the tank. However, in most cases there will be less load on the pump if you run a 1in pipe to the top of the tank and fill it that way. It just depends on how much reserve your pump has.

  3. #3
    Silver Member
    Join Date
    May 2007
    Posts
    187
    Location
    Western Australia
    Tractor
    Kubota L4400

    Default Re: Water line and storage tank question?

    The feed to the tank should be to the BOTTOM of the tank. This is because there will always be a higher head (requiring more energy) if fed to the top of the tank. When fed to the bottom of the tank, the head increases as the water level rises. It will always be less than the head if fed at the top. It makes no difference if the tank is large or small, it is the head that makes the difference.

    Simply run 2" pipe from bottom of tank to house and "T" off a feed from the pump. When the pump is running, it will feed the tank. When not running, gravity will feed house.

    Cityfarma
    Kubota L4400 & FEL, 9 point spring tyne harrow, 33 acres of sanity.

  4. #4
    Elite Member SnowRidge's Avatar
    Join Date
    Jul 2003
    Posts
    3,091
    Location
    East Tennessee
    Tractor
    Power Trac PT-425 / Branson 3520

    Default Re: Water line and storage tank question?

    Is this is an auxillary/emergency tank, or is this to be part of the regular domestic supply? If it is the former, why are you concerned about a check valve? There should be a regular shut off valve in the fill line.

    If this is to be part of the regular domestic supply, then it begs the question, is the tank to be vented to the atmsophere, or is it to be pressurized? If it is to vented to the atmosphere, you will need some sort of high level limit switch to shut off the pump when the tank is full. Also, your house pressure will be limited to that which the tank head will supply, which may not be enough. In that case, you will need an auxilliary pressure pump at the house.

    If it is to be both pressurized and large enough to store a meaningful amount of water, I would expect the tank to be very, very expensive.

    In any event, the tank will have to be protected from freezing.
    Last edited by SnowRidge; 11-01-2007 at 08:33 AM.

  5. #5
    Platinum Member
    Join Date
    Jan 2002
    Posts
    829
    Location
    Tidewater VA.
    Tractor
    Ford '92 2120

    Default Re: Water line and storage tank question?

    Yeah Snow, That's a good question. What's going to make the pump shut off? Tell us more..
    Steve...

    "My biggest fear is that when I'm gone my wife will sell all my tractor gear for what I said I paid for it. "

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