The most challenging clock to program?

Discussion in 'Irrigation' started by Mike Leary, May 13, 2007.

  1. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,298

    I'm going to revive this thread since I was just looking at using a Griswold DWS valve for use as a master. It is a bit cheaper than the 8200CR and has no screens to clog. Anyone have any experience with these valves?
     
  2. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,799

    I was not aware Griswold was still around..they were a player years ago &
    I believe they had a pretty advanced (for its time) controller. Got a link?
    The 8200 valve is sweetness..goes with the Calsense.
     
  3. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,298

  4. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,799

    Thanks Kiril, I'd forgotten about them. Notice they make a normally open
    valve, I thought Superior was the only one. We use them on the Rain Master
    sites w/ flow sensing.:)
     
  5. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,298

    Curious if you run two masters in the above senario?
     
  6. irrig8r

    irrig8r LawnSite Platinum Member
    Posts: 4,535

    That Johns Manville was the because P.I.T.A. of all to program.
     
  7. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,799

    Not a bad idea, because you could program for it, but no, a normally open
    MV when quick couple or faucet lines are spec'd.:)
     
  8. txgrassguy

    txgrassguy LawnSite Gold Member
    Posts: 3,083

    I didn't read all of the posts but I'd say the hardest "clocks" to work with was the old hydraulic manifold Toro's like the VT-1 thru 4 series.
    I used to service these old controllers on a golf course near me and they were always clogging at the junction inside of the cabinet. To clear them you had to have REAL quick fingers as the moment the line was separated the damn head popped up.
    The cams always stuck and until one became proficient in knowing how much pressure to apply the risk of striping the teeth was a constant concern.
    Not to mention every station in every satellite had to be timed perfect to avoid overlapping the run times and screwing up the coverage from too many heads running at the same time.
    I still cringe when I hear that ratcheting noise.
     
  9. DITTO
    That clock was a disaster. Defied logic.
     
  10. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,799

    Missed it..the insulation Johns Manville?:dizzy:
     

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