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Thread: No Pressure For Yard Hydrant Unless Pump Is On

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  1. #1

    Default No Pressure For Yard Hydrant Unless Pump Is On

    Over the winter I installed a new holding tank, pressure switch, etc. in the house. Works mint. Now this spring my yard hydrant didn't work. The hydrant is off the same line that comes to the house. I dug up the hydrant, thinking that was the issue. Then I see water comes out of the line only when the pump is activated (yes, I dug it up for nothing). So basically when the hydrant is on I get no water unless the pump is on too. Shouldn't the hydrant work and activate the pump if needed? I'm a little confused because this all worked fine for the last 10 years with my old set up (holding tank, pressure switch, etc.). The reason I replaced all that to begin with is becasue the pump was constantly going on and off, due to a busted bladder. I added air about once a month for the last year or so before I finally got around to replacing it. Long story short, the only time I can use my hydrant is when my pump is going. Any suggestions?
    Last edited by Terry; 05-02-2007 at 09:51 AM.

  2. #2

    Default

    explain to me what a hydrant is?

  3. #3
    In the Trades Bob NH's Avatar
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    Oct 2005
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    It sounds like there may be a check valve between the hydrant and the pressure tank.

  4. #4
    DIY Senior Member Mike Swearingen's Avatar
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    Jan 2005
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    On Albemarle Sound In Northeastern NC
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    If the hydrant is on old galvanized pipe, that may be the problem and the line may need to be replaced.
    As you know, obsolete galvanized pipe is notorious for scaling up inside, restricting the flow, until it eventually plugs up completely.
    Good Luck!
    Mike

  5. #5
    Previous member
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    A hydrant is a freezeless faucet that can be installed anywhere in your yard.

    I agree with BobNH, remove the check valve that was obviously not there on the old install.

    bob...

  6. #6

    Default

    You're right, I did put in a check valve where there wasn't one before. I will take it out and see what happens. I take it I don't need a check valve? Someone told me I should put one in if I am replacing everything anyway.

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