Sprinkler Trouble!!!

Discussion in 'Irrigation' started by jsroda, Apr 30, 2013.

  1. jsroda

    jsroda LawnSite Member
    Messages: 88

    The problem I am having is a loss of pressure to only one zone, every other zone is working perfectly fine. I first thought it was a broken head at the bottom of the driveway because none of the heads were popping up and it was just trickling out of that head, but I dug it up and checked it and nothing was wrong. So I went further and marked all the sprinkler heads with blue flags and checked those also, everything is cleaned and should be in working condition. I don't understand why this zone is not getting any pressure, there are no bubbling spots in the yard that would indicate a broken line, if there was shouldn't water be gushing out of it right?
    In one picture I circled 2 things with a red circle. One is the driveway where there is a crack that is wet but its only on the left side and water is not pouring out of it or even running out of it, its just a little damp. The other is a wet spot in the yard, not muddy just a little bit wetter then the rest of the yard. If you step on it with your bare foot water will come between your toes. I want to check a couple other things before dig up the whole yard looking for a broken line.

    Any body have any help??? I would greatly appreciate it!!!



  2. 1idejim

    1idejim LawnSite Fanatic
    Messages: 11,358

    Do you have flow control and if so have you checked it?
    Posted via Mobile Device

    Also, if you're on a meter compare zone to zone. There is no use looking for a leak you don't have.
  3. DanaMac

    DanaMac LawnSite Fanatic
    Messages: 13,226

    Dig up the heads, cap them off, turn zone on, see where water comes up.
  4. irritation

    irritation LawnSite Gold Member
    Messages: 3,593

    Friction loss, too many heads on the zone, wiper seals leaking.
  5. Patriot Services

    Patriot Services LawnSite Fanatic
    Messages: 14,472

    No water should ever come in the middle of driveway. I think you have a line break. Cap all the heads and I bet you wil get a lot more out that crack. There is a lot of crushed base under there to absorb which is why you don't have a lot bubbling out.
    Posted via Mobile Device
  6. irritation

    irritation LawnSite Gold Member
    Messages: 3,593

    I doubt they went under the drive, it probably feeds around the house. You may have a head next to the corner of the garage in that little bed that is broken or under the edging.
  7. jsroda

    jsroda LawnSite Member
    Messages: 88

    The system has been in this house for 10 years and has worked just fine until now so I know that line should work with that many heads. I will replace the wiper seals but it still isnt getting enough water/water pressure, its like something is blocking the line.
  8. jsroda

    jsroda LawnSite Member
    Messages: 88

    The only reason I think it goes under the drive is because the control valve box is on the other side of the driveway which has zones 1 through 4 in it. There is a head by the corner of the house but it seems to be in working order.
  9. windflower

    windflower LawnSite Bronze Member
    Messages: 1,108

    Try replacing the guts in the valve, sometimes they don't open all the way for some reason. I have a system doing the same thing.
  10. jsroda

    jsroda LawnSite Member
    Messages: 88

    If so the only way to get to the line would be too cut that sections of the driveway out and then fix the line and lay new concrete, correct?

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