Landscape and Irrigation Magazine

Discussion in 'Irrigation' started by Dirty Water, Dec 27, 2005.

  1. Dirty Water

    Dirty Water LawnSite Fanatic
    Posts: 6,799

    I just got this months issue of Landscape and Irrigation in. In the editors letter, it shows a picture of a irrigation display at a trade show.

    In this picture, you can clearly see "swing joints" made of 3 PVC glue el's.

    I thought only the home depot hacks did that? :laugh:
     
  2. PurpHaze

    PurpHaze LawnSite Fanatic
    Posts: 5,496

    LOL... Can't wait until they try and swing it into position. :dizzy:
     
  3. PurpHaze

    PurpHaze LawnSite Fanatic
    Posts: 5,496

    How about this galvanized/Marlex swing joint??? I found it in the "Beauty Shots" section of the Rain Bird site. :p

    Rainbird Galvanized Swing.jpg
     
  4. True Cut Lawn Maintenance

    True Cut Lawn Maintenance LawnSite Senior Member
    Posts: 418

    im no irrigator, but i have a interest in it, and have done a few plumbing projects. Doesnt galvanized have trouble sealing to plastic pipe in general??
     
  5. CAL-LANDSCAPER

    CAL-LANDSCAPER LawnSite Member
    Posts: 48

    Hayes - Looks like a 'plumber' did a repair :rolleyes:
     
  6. PurpHaze

    PurpHaze LawnSite Fanatic
    Posts: 5,496

    Known a few of them in our lives. :p
     
  7. PurpHaze

    PurpHaze LawnSite Fanatic
    Posts: 5,496

    A gal/PVC connection would require taping/doping to seal the threads. The black els in the picture are Marlex which is a softer material. If it is adequately threaded into/onto galvanized or PVC threads it seals without Teflon tape or dope.
     
  8. True Cut Lawn Maintenance

    True Cut Lawn Maintenance LawnSite Senior Member
    Posts: 418

    i usually use dope on gas lines, but try to use tape on galvanized water lines, not sure why just the luck ive had.
     
  9. AssuredServicesCo

    AssuredServicesCo LawnSite Member
    Posts: 113

    We've always said as a general rule you can screw plastic into metal but not metal into plastic, even though we dont usually mix pipe.
     
  10. PurpHaze

    PurpHaze LawnSite Fanatic
    Posts: 5,496

    Not a bad general rule but one that is broken on occasion. When we build a QC swing joint the last nipple is always galvanized instead of SCH 80. It's stronger and doesn't back out of the last PVC threaded 90 on the swing joint quite as easily.

    In the olden days plumbers would run PVC pipe and then make semi-swing joints out of galvanized. Guess they were just looking at getting the sprinkler set properly the fisrt time and didn't care that their swings froze up after that.
     

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