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PVB Valve Needed?

Discussion in 'Irrigation' started by Dirt Boy, Jun 26, 2006.

  1. Dirt Boy

    Dirt Boy LawnSite Senior Member
    Messages: 489

    Have a situation where an install is out in the country feeding off of a well supply. There is no "State" code (that I'm aware of), and my question is; do you need to install a PVB valve on this type of system? Or should you do it as a matter of safety? Can you depend on the check valve for the well, and if there was a break in the line, what damage could occur?
    One other thing to note, is that the area could be subject to flooding in a heavy rain (if it ever rains!!).

  2. PurpHaze

    PurpHaze LawnSite Fanatic
    Messages: 5,496

    Better safe than sorry. Even our wells used strictly for irrigation are required to have BF protection to prevent contamination of the auquifer.
  3. Dirty Water

    Dirty Water LawnSite Fanatic
    Messages: 6,794

    We always install a backflow for liability reasions if we are ever connected to a potable source.

    No BF on irrigation only wells and ditches though.
  4. Dirt Boy

    Dirt Boy LawnSite Senior Member
    Messages: 489

    Thanks, I would rather be safe than sorry, but I was getting conflicting info from a supplier, who I would think know. But ...... then again!
  5. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Messages: 50,588

    Potable water needs protection. Above ground or below. States will get around to closing any protection loopholes, so you might as well design with proper backflow now.
  6. sheshovel

    sheshovel LawnSite Fanatic
    Messages: 5,112

    Install one..you sure can't go wrong doing so..
    but you can go wrong by not doing so.
    Use common sense it is always the best advice.
  7. DanaMac

    DanaMac LawnSite Fanatic
    Messages: 13,221

    On a slightly different note, I'm going to look at one home today on city water, and the guy says it has 2 stub outs and no backflow preventers. Wants price for installing them. Along with multiple other problems.

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