1-2 gpm zone leak (when turned on), cant find.

Discussion in 'Irrigation' started by RhettMan, Nov 2, 2012.

  1. 1idejim

    1idejim LawnSite Fanatic
    Posts: 8,848


    Close it off again and induce air. Make a .25 npt adapter and start with low pressure. Increase pressure as needed. Sometimes a mixture of air and water has to be used but air will surface when water won't.

    Don't get in too much of a hurry to cut or dig, you'll end up with a more harmonious outcome
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  2. 1idejim

    1idejim LawnSite Fanatic
    Posts: 8,848

    BTW Rhett, your best bet to locate the pipe is dowsing with your voodoo sticks.

    A chatterbox is a circuit interrupter for finding valves. A plastic pipe locator is too expensive for most of us to buy.

    With some practice most anybody can be consistant with a single or pair of sticks.
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  3. txirrigation

    txirrigation LawnSite Senior Member
    from Texas
    Posts: 977

    I do not think I understand the problem either...
     
  4. txirrigation

    txirrigation LawnSite Senior Member
    from Texas
    Posts: 977

    Alright now I understand. Sorry, I was on day 3 of staring at a set sheet for a commercial bid... that's another thread through.

    Did the original contractor build the house addition over a live lateral, which is now under the house? I have never had that happen on a house addition, but I have seen a lot of patios built over live irrigation laterals that ended up breaking.

    You might call in a plumber or rent a snake with a camera, then scope the drain tile and see where the water is coming from. It will at least get you closer.
     
  5. DanaMac

    DanaMac LawnSite Fanatic
    Posts: 13,156

    That was going to be my recommendation as well. Turn off water supply, and use an air compressor to try and force either air bubbles or loose dirt to the surface. Do you know where all the zone valves are? You could also turn flow controls off and see if that helps. Do that one by one.
     
  6. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,603

    I've induced air to find a leak also by looking for bubbles.I've also put the screws to the system AFTER I told the client that this is a last resort as the chances of blowing the offending leak out of the ground are real good. :cry:
     
  7. RhettMan

    RhettMan LawnSite Silver Member
    from Texas
    Posts: 2,042

    ......................oops, be right back
     
    Last edited: Nov 3, 2012
  8. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,603

    Sure would have been impossible with my W*M brass nozzles.
     
  9. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,603

  10. grassman177

    grassman177 LawnSite Fanatic
    Posts: 9,795

    great advice if nothing else, cuz air is much easier to find than water when it comes to leaks.
     

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