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Discussion in 'Irrigation' started by Buck_wheat, Oct 29, 2010.

  1. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,412

    probably more an issue with Rotators than fixed nozzles
     
  2. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,923

    Yup, they are hard enough to tune WITH water. I hope to never spec another Rotator. :hammerhead:
     
  3. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,412

    Going back to the wonderful world of brass nozzles, there was the occasional need to remove a nozzle and flush dirt from the head. Quickest was to do it with the zone running, but.... if the nozzle was one of the coarse-thread type no longer in production, it would be almost impossible to replace with the water on.
     
  4. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,923

    I don't think it's any easier to screw on a fine thread brass nozzle to a plastic riser with flow. Dogging down the flow control will help, but brass and plastic are not good friends, thread-wise. Takes about thirty years to do it by "feel".
     
  5. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,412

    Of course, with strainers for each nozzle, the remove-and-replace-with-the-water-running operation is no longer standard procedure.
     
  6. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,923

    With brass, I never used a strainer, easier to notice the clog and clean it with a piece of 18g.
     
  7. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,412

    ...and I still may never know why the old fine-thread brass popups used a 5/8 x 27 thread, and the modern fine-thread nozzles and bodies use a 5/8 x 28 thread ~ who screwed up?
     
  8. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,923

    Once plastic pop-ups came into being with their higher reach, there was no reason for those tall brass nozzles; everyone eventually standardized to 5/8 x 28 thread, which I applauded. It will be interesting at I.A. to see if there are any brass nozzles displayed. We can thank the Bean counters for taking out the quality of our industry. One only has to look at W*M. :hammerhead:
     
  9. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,412

    Yeah, but why create the 5/8 x 28 nozzles, when there were already 5/8 x 27 nozzles? I believe the old 5/8 x 18 coarse thread nozzles matched an 18 tpi bolt pattern (UNF) so there would have been machine tooling available for making them.
     
  10. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,923

    I remember when all that happened and was as perplexed as you, but the re-tooling worked, and became the standard. The brass nozzles do not leak at the plastic connection, even though to this day it's easy to cross-thread them.
     

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