You think this is to code?

Discussion in 'Irrigation' started by Dirty Water, Nov 22, 2006.

  1. Dirty Water

    Dirty Water LawnSite Fanatic
    Posts: 6,794

    Ran into this yesterday. AVB where a PVB should be on a 4 zone system, tied directly into the house water with no shutoff valve.

    This neighborhood has NO backflow requirements on their water, which is crazy.

    I installed a shutoff and a drain below grade. Would have liked to ditch the AVB as its doing nothing, but the guy didn't go for it.

    avb.jpeg
     
  2. PurpHaze

    PurpHaze LawnSite Fanatic
    Posts: 5,496

    Is the a case of the inmates running the asylum???:)
     
  3. KCLandscape

    KCLandscape LawnSite Senior Member
    Posts: 526

    yes, but let them pay or move on if they dont like the advice......
     
  4. sildoc

    sildoc LawnSite Silver Member
    Posts: 2,925

    See that a lot on homeowner installs. That and coroded asv's lower than the highest point.
     
  5. PurpHaze

    PurpHaze LawnSite Fanatic
    Posts: 5,496

    On a recent repair job at our main stadium I actually replaced a brass ASV that is down in a box. However, the box is located almost to the top of a slope on a main line spur and the only sprinklers (Toro 300 Stream Rotors) are back down the slope at the bottom where the main line is located near a sidewalk.

    There used to be another ASV in the box for a drip system that did plants above slope from the valve and down slope near the sidewalk but I removed it. All the drip has been abandoned for years and the plants are established and don't lack water.

    This backside area is really in need of being totally renovated/automated and I'm supposed to draw up a design and cost estimate sometime this winter. We'll see what happens.
     
  6. jerryrwm

    jerryrwm LawnSite Bronze Member
    Posts: 1,274

    If it has a 'wild head' and a master valve then it is to code in Wisconsin. I'm not too impressed with the piping however. It's all copper to the BFD and usually down into the ground.
     
  7. Dirty Water

    Dirty Water LawnSite Fanatic
    Posts: 6,794

    Yeah, everything for us is brass to the BFD (though we do doublechecks), I'm not a fan of PVC before backflows, or PVC in the sunlight.

    I chopped out the male adapter/coupler elbow crap that someone else did and put in a new male adapter and a 90 as my last glue point after installing the drain, the exposed PVC was very very brittle.
     
  8. Hank Reardon

    Hank Reardon LawnSite Senior Member
    Posts: 599

    The Washington DOH does not allow AVB's as an approved BPA. I can't believe that guy wouldn't install a PVB in it's place. Our local code doesn't even allow PVB's and requires DCVA's.

    What is a "Wild Head"?
     
  9. Dirty Water

    Dirty Water LawnSite Fanatic
    Posts: 6,794

    What Jerry is referring to is something along the lines of this:

    Master Valve --> AVB --> Wild Head -- > Mainline.

    The wildhead keeps constant pressure off the AVB, allowing it to function as a BF, however I'd imagine you'd get a swampy spot :D
     
  10. Hank Reardon

    Hank Reardon LawnSite Senior Member
    Posts: 599

    With no mechanical loading on the poppet, they fail. Definately a green patch of lawn around it though.
     

Share This Page