Little Valves

Discussion in 'Irrigation' started by Armadillolawncare, Jan 23, 2009.

  1. Armadillolawncare

    Armadillolawncare LawnSite Senior Member
    Posts: 570

    My instructor mentioned that the company he used to own and now consults for has switched over to using the Little Valve almost exclusively. It allows you to purchase all 15 foot radius sprays and then trade out the stems and install the Little Valve stems. The Little Valves then allow you to adjust the spray from 15' down to drip and anything in between. This would allow you to eliminate 5' 8' 10' and 12 foot sprays. Do any of you have any experiance with these? Here is the web site.

    http://www.valvettesystems.com/benefits.htm
     
  2. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,791

    Pass; that's about as dumb as I've ever heard; no one considered plant growth and the blocking down the road? :hammerhead:
     
  3. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 46,995

    I think FIMCO has used them, but it's probably cheaper and quicker to just inventory a full range of nozzles, rather than having to dismantle a popup body and replace the popup stem with a Valvette.

    Besides, you may have occasion to require 2-inch popups with smaller nozzles.
     
  4. hoskm01

    hoskm01 LawnSite Fanatic
    Posts: 5,690

    15 foot down to drip... The DU must be superb.
     
  5. Tom Tom

    Tom Tom LawnSite Bronze Member
    Posts: 1,277

    The precip rate goes way up with the little valves (i.e 15' nozzle adjusted to 12' or 10')
     
  6. hoskm01

    hoskm01 LawnSite Fanatic
    Posts: 5,690

    Does that imply that output is same, regardless of distance?



    MPR's would be worth 12x the value of a "valvette" if this is so.
     
  7. Tom Tom

    Tom Tom LawnSite Bronze Member
    Posts: 1,277


    Their chart shows a 1.99 precip rate for a 15' nozzle adjusted down to 10'.

    Not sure of the DU thou.
     
  8. Sprinkus

    Sprinkus LawnSite Silver Member
    Posts: 2,082

    Just hope that a small rock, or piece of gravel doesn't get into that hole in the stem or the head might not pop up or pop down.
    I guess they don't have rocky soil in New Braunfels.
     
  9. hoskm01

    hoskm01 LawnSite Fanatic
    Posts: 5,690

    At that quantity, I said thanks, but no thanks.
     
  10. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 46,995

    The concept of throttling down the flow to a nozzle still has merit. I've used PCS screens on Rainbird systems, and they can be the difference between effective and poor performance on systems with marginal water pressures. (Retrofits, for the most, since you don't design from scratch at the margins of performance)
     

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