The little hole on the pgp riser

Discussion in 'Irrigation' started by CAPT Stream Rotar, Jun 9, 2008.

  1. CAPT Stream Rotar

    CAPT Stream Rotar LawnSite Fanatic
    Posts: 5,956

    that lets water out..

    I always thought it was a pressure regulator of some kid for the head...to much pressure water comes out very fast...Not enough pressure no water comes out...

    thoughts?

    comments?
     
  2. DanaMac

    DanaMac LawnSite Fanatic
    Posts: 13,156

    This comes from a bad prostate...... :)
     
  3. WalkGood

    WalkGood LawnSite Bronze Member
    Posts: 1,910

    That is a good question..... I too have wondered. Had a few customers complain about it. Thought maybe it was a bad internal seal.

    P.S. Ed, quick .... get a picture posted before a certain someone hammers you! ;)
     
  4. CAPT Stream Rotar

    CAPT Stream Rotar LawnSite Fanatic
    Posts: 5,956

    anyone gona take a stab @ this one??

    also since I have you here why do some of the older model mini clicks, have an open wire that is meant to be open?

    we have the 2 common wires, and a third short open wire....
    ?????
     
  5. BrandonV

    BrandonV LawnSite Platinum Member
    Posts: 4,257

    isn't it where the water escapes from running the gears? Never took one apart. But sounds like a good idea.
     
  6. CAPT Stream Rotar

    CAPT Stream Rotar LawnSite Fanatic
    Posts: 5,956

    now thats a great thought bran..

    [​IMG]
     
  7. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 22,068

    Never thought they were worth screwing around with, so...no help.
     
  8. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 48,003

    The little hole is there because it drains water from an area it sometimes leaks into. Oldest PGPs had no hole, and some of them popped apart after the water froze. File it under "stuff they don't think of in Sunny California, when they first design sprinkler heads." Notice that more water can leak at low operating pressures, than at higher pressures.

    Toro had a similar gaffe with the Super700 heads, and fixed it by filling the airspace with foam plastic.
     
  9. Waterit

    Waterit LawnSite Silver Member
    Posts: 2,913

    For normally open (hydraulic) valves, if I remember correctly.

    Or to confuse the installer and make him ask his sales rep questions that the rep is unqualified to answer.
     
  10. Waterit

    Waterit LawnSite Silver Member
    Posts: 2,913

    And the Super606 heads, and...
     

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