Manifold vs. Inline valves

Discussion in 'Irrigation' started by jlouki01, Aug 7, 2010.

  1. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 46,490

    Happens in Texas, though. That's why they like slip x slip valves :)
     
  2. irritation

    irritation LawnSite Gold Member
    Posts: 3,149

    A threaded joint is just another possible leak and I've seen many leak, not mine but they can leak. I like glue in valves but leave room for replacement.
     
  3. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 46,490

    I see threaded valves as supplying a measure of stress relief in poly-pipe systems.
     
  4. irritation

    irritation LawnSite Gold Member
    Posts: 3,149

    Poly mains are for pikers.
     
  5. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,616

    Poly and PVC in the hands of children:

    DSCN1213.jpg
     
    Last edited: Aug 9, 2010
  6. irritation

    irritation LawnSite Gold Member
    Posts: 3,149

    I wonder what size of jumbo box was over that mess?
    I would think the poly wire sleeves were more of a hassle than protection.
     
  7. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,616

    I believe there were three standards; the poly sleeve was most assuredly a hassle because we cut through it many times while rebuilding the botched system.
     
  8. jlouki01

    jlouki01 LawnSite Senior Member
    Posts: 453

    These are some of the reasons I asked my question. Here we trench pvc mostly. I do see some Poly for laterals but for the most part it's all PVC.

    I personally like installing slipxslip valves but have started using threaded a bit more.

    I can see a properly laid out manifold having some advantages to repairing and replacing valves ( if the installer left room ).
     
  9. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,298

    Nor I .... at least one I built .... but that doesn't mean I don't allow for easy replacement either.

    IMG_1320a.JPG
     
  10. Some Sprinkler Guy

    Some Sprinkler Guy LawnSite Member
    Posts: 167

    Well I gotta say I don't think any threaded valve is as good as a solvent weld. I rarely reuse a pvc threaded valve after its been used once before. The pvc misforms when you thread something into it. I don't trust them not to crack on the second go round.

    In addition the male adapter is the weakest fitting made. I suppose you could use nipples though.
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