hydraulic value locating

Discussion in 'Irrigation' started by extremecutter, Aug 27, 2012.

  1. cjohn2000

    cjohn2000 LawnSite Senior Member
    Posts: 553

    Interesting. I still stand by my dowsing rods.
     
  2. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,361

    There is the small amount of magnetic steel in a solenoid, but I doubt a metal detector makes much of it. Every now and then, I encounter one of the old valve marker spikes that were installed to give a metal detector something to find. They were a square of steel welded to a spike, and painted yellow or orange.
     
  3. 1idejim

    1idejim LawnSite Fanatic
    Posts: 9,322

    irrigation valves use stainless steel metal parts, ferro-magnetic locators won't work. Tresure locators which locate non-ferrous metals usually don't work do to the extremely small footprint of the parts and the depth/soils mass.
    if you choose to a metal detector you fall into the "even a blind pig gets a peach now and then" catagory. it's more luck than not.

    that's what my original post should have said.

    http://www.minelab.com/__files/f/11043/METAL DETECTOR BASICS AND THEORY.pdf

    http://whiteselectronics.com/product.html
     
  4. 1idejim

    1idejim LawnSite Fanatic
    Posts: 9,322

  5. extremecutter

    extremecutter LawnSite Member
    Posts: 106

    Thanks for the advice. Found the problem. Wasn't the value. After 3.5 hrs of digging, probing, cussing found the problem. Notice a small puddle forming in a low spot that wasn't there an hour ago. Shut the water off and bubble form along with more water. Any ways dig it up and find three hyd line in between two 1 1/2' roots. Which in turn a puncture hole in one of the lines. Removed about 4' of the roots to create slack in the lines. Repaired the line and install a value box for future repair if needed.
     
  6. Oxmow

    Oxmow LawnSite Senior Member
    Posts: 391

    Ive used dowsing as well. Used them to find lateral lines in a high school baseball field just a couple of months ago. It's been so dry here that they were almost pinpoint with the water in the pipes. I used 2 irrigation flag wires with the ends bent 90 degrees to hold onto.
     
  7. DanaMac

    DanaMac LawnSite Fanatic
    Posts: 13,156

    I have a question - what the heck is a "value" in a sprinkler system? I know what a "valve" is, but a "value"? :) the "v" and "u" aren't very close on the keyboard.
     
  8. 1idejim

    1idejim LawnSite Fanatic
    Posts: 9,322

    don't be silly dana, everyone knows what a value is. it's that thingy in the value bux
    Posted via Mobile Device
     
  9. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,361

    a Value Box must be one of those Texas specials
     
  10. extremecutter

    extremecutter LawnSite Member
    Posts: 106

    yea yea yea. but i found the problem. most important thing.
     

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