Tricking a valve in being on all the time?

Discussion in 'Irrigation / Sprinkler Forum' started by UKMyers, May 22, 2008.

  1. UKMyers

    UKMyers New Member

    Messages:
    8
    Location:
    Norcal
    I have a motion activated sprinkler to keep my irresponsible neighbors cats out of my garden. It requires a constant supply of water. I had a capped PVC line next to my garden and I finally got it all hooked up to a valve so I don't have to have my hose laying out across the yard all the time to feed the sprinkler. I have an Ortho 9 zone controller and it has no settings for keeping one on all the time. If I crack the manual bleeder it will work but then it sprays a small mist of water all the time. If I crack the manual and then tighten it back down it will work for a while but eventually the pressure bleeds off and the valve closes again. I don't want to send power to the solenoid all the time because surely eventually it would fail.

    So does anybody know a way I can mechanically force the valve to stay open all the time? They are standard Lawn Genie 3/4 anti syphon valves.

    Thanks
  2. Gary Swart

    Gary Swart In the Trades

    Messages:
    7,349
    Location:
    Yakima WA
    You were on the right track with the hose, but I certainly understand you don't want a hose laying across the lawn all of the time. What I would suggest is tie into a water line that is not valve controlled possible the one the hose was connected to. Bury a PVC pipe under the lawn. One problem with connecting to a sprinkler zone line is that those lines are not charged with water until the zone valve opens. There would be a time lag while the air in that line was expelled and the cat sprinkler activated. A dedicated line would be fully pressurized at all times so the cat sprinkler would active instantly.
  3. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,641
    Location:
    Cave Creek, Arizona
    valve

    Unscrew the solenoid and remove the moving stem inside it.
  4. UKMyers

    UKMyers New Member

    Messages:
    8
    Location:
    Norcal
    The moving stem inside of the solenoid itself? I have had my solenoids off quite a few times and I'm not sure what you are referring to.

    EDIT I went and grabbed an old solenoid and messed around with it and figured out what you were talking about. I pulled the guts out of it and it works like a champ. Thanks for the help!!
    Last edited: Jul 4, 2008
  5. Joerg

    Joerg New Member

    Messages:
    138
    Location:
    Califonia
    He means the plunger/spring assembly. When you unscrew the solenoid it'll almost fall into your hands. A piece of metal about 1/2" long and often hexagon shaped, with a spring clicked into a groove. Watch out that it doesn't fall into the grass, hard to find in there.

    Look at the 2nd picture:

    http://www.irrigationtutorials.com/faq/repair-valve.htm

    Regards, Joerg
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