Blowouts

Discussion in 'Winterizing' started by GreenLawn51, Jul 21, 2019.

  1. GreenLawn51

    GreenLawn51 LawnSite Member
    Messages: 24

    Going to be doing about a dozen blowouts this Fall. What are your tricks or tips? Thanks
     
  2. Andrew H

    Andrew H LawnSite Silver Member
    Messages: 2,735

    Step on misty heads to get the water out.
    Ensure the water is off at the backflow
    Add a bit of RV antifreeze to pumps
     
    m_ice and GrassManKzoo like this.
  3. Mdirrigation

    Mdirrigation LawnSite Platinum Member
    Messages: 4,385

    Bring at least three guys to blow through the pipe it's too hard with just one man alone
     
  4. GrassManKzoo

    GrassManKzoo LawnSite Platinum Member
    Male, from Kalamazoo, MI
    Messages: 4,771

    I’m not an irrigation guy but have done a couple blow outs as a helper. don’t you have to drain the line from the basement shut off to the back flow? Or was that on just the ones I happened to go to?
     
    Cam15 likes this.
  5. GrassManKzoo

    GrassManKzoo LawnSite Platinum Member
    Male, from Kalamazoo, MI
    Messages: 4,771

    I also remember using jumper wires in the box so you could do 2 or 3 zones at a time
     
    m_ice likes this.
  6. Andrew H

    Andrew H LawnSite Silver Member
    Messages: 2,735

    Some systems do have the drain in the elbows, not all of them though.

    Make sure you get the correct hose fittings, i have two separate connections, a fitting to connect into the spigot or the check valve if there isn’t one
     
    hort101 likes this.
  7. OP
    OP
    GreenLawn51

    GreenLawn51 LawnSite Member
    Messages: 24

    How long do you like to run the compressor for each zone? Drip zones? What pressure do you recommend?
     
  8. magna111

    magna111 LawnSite Senior Member
    from NJ
    Messages: 477

    Depends on the zone, the compressor, the pressure you’re set at, how much and what size hose you’re using, what size/type of fitting you’re connected to the system with, where the valves are, the size of the heads on the zone, are the heads fed from the side or the bottom. Yes it’s simple work, but if you’re giving these people your real number you could be on the hook for a lot more than you’re going to make if you’re doing it wrong. Also, if you’re only doing a dozen blowouts I wouldn’t think it’d be worth the hassle/rental.
     
    hort101 likes this.
  9. GrassManKzoo

    GrassManKzoo LawnSite Platinum Member
    Male, from Kalamazoo, MI
    Messages: 4,771

    When In doubt throttle out!Thumbs Up
     
    AI Inc likes this.
  10. magna111

    magna111 LawnSite Senior Member
    from NJ
    Messages: 477

    That’s a good way to fck sht up ...
     
    Mdirrigation likes this.

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