Glue or gasketed?

Discussion in 'Irrigation' started by greenmonster304, Feb 23, 2012.

  1. greenmonster304

    greenmonster304 LawnSite Gold Member
    Messages: 3,690

    For those of you who install large diameter pipe (4"-6") which do you use and why? I am bidding a job for an organic farm that needs a few thousand feet of mainline installed to run their rain reels with. They have a tractor driven well capable of 500 gpm @ 150 psi.
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  2. 1idejim

    1idejim LawnSite Fanatic
    Messages: 11,358

    sched 40 and glue
  3. the irrigator

    the irrigator LawnSite Member
    Messages: 63

    I would recommend gasketed pipe for anything over 3" with thrust blocks and/or restraints.
  4. jvanvliet

    jvanvliet LawnSite Gold Member
    Messages: 3,944

    I don't think glued fittings will hold @ 150 PSI;

    Maximum operating pressure for 6" SCD 40 PVC is 106 lbs, 133PSI for 4", bursting pressure is higher.

    I would go for gasketed pipe with thrust blocks and/or restraints like the irrigator suggested, or flanged fittings.
  5. 1idejim

    1idejim LawnSite Fanatic
    Messages: 11,358

    i stand corrected, didn't pay attention to the psi v size
  6. Sprinkus

    Sprinkus LawnSite Silver Member
    Messages: 2,326

    PVC vs. HDPE.
    I'm too medicated to comment much.
    If I were to go with PVC at that size it certainly would be gasketed.
  7. agrostis

    agrostis LawnSite Silver Member
    Messages: 2,545

    Gasketed pipe and thrust block's.
  8. NC_Irrigator

    NC_Irrigator LawnSite Bronze Member
    from NC
    Messages: 1,455

    My rule of thumb, anything over 2.5" should be gasket.
  9. the irrigator

    the irrigator LawnSite Member
    Messages: 63

    Dealing with this flow and pressure is a different "ballgame" then residential or light commercial work. There is definately a learning curve. It might be a good idea to see if you can work with someone who has done this type of work before, you will avoid any costly and embarassing mistakes and learn along the way. Just my two cents.
  10. Mike Leary

    Mike Leary LawnSite Fanatic
    Messages: 23,172

    On pipe that size, gasketed is the way, the truth and the no leak. Come-alongs and a beefy crew are needed.

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