Trick Valve

Discussion in 'Irrigation' started by Duekster, Mar 4, 2007.

  1. Duekster

    Duekster LawnSite Fanatic
    from DFW, TX
    Messages: 7,961

    I have a valve, which will not open on a new installation.

    All Zones have 42~43 Ohms on them including the one in question. I eliminated the controller by switching stations at the TC and the problem follows the valve.

    I replaced the solenoid and top bonnet, leaving the body. It works in manual.

    I have cleaned up the splices, and can hear the valve hum when firing.

    I am at about wits end here. :dizzy:
  2. SprinklerGuy

    SprinklerGuy LawnSite Bronze Member
    Messages: 1,778

    Port under the solenoid is probably clogged w/ glue etc....did you check that yet?

    Good luck....
  3. Duekster

    Duekster LawnSite Fanatic
    from DFW, TX
    Messages: 7,961

    The valve body was supposed to be replaced yesterday. That is twice I heard something similar. Will let you know. Thanks.
  4. DanaMac

    DanaMac LawnSite Fanatic
    Messages: 13,211

    You are licensed in Texas, you should be able to figure it out. Don't they put you through a lot of testing for that stuff?
  5. PurpHaze

    PurpHaze LawnSite Fanatic
    Messages: 5,496

    Although all automatic valves work on basically the same principles it would be better in the future if you'd indicate a brand and model when asking questions like this. Sometimes the guys on the forum know of particular problems an irrigation part is experiencing (or has experienced in the past) and will be happy to include this information in their responses. Of course... a picture is worth a thousand words also. :nono:

    For example... If the valve had been an Irritrol Century Plus model I'm aware that valves manufactured about five years ago had pitot tube problems (this is the "port" some have advised you to clean) and also with diaphragms sticking to the diaphragm support ring and either not opening at all or hanging up and not shutting down. :)
  6. Dirty Water

    Dirty Water LawnSite Fanatic
    Messages: 6,794

    The guy is from texas, so I'm going to say slip valves....

    I'm also going to say its either a Rainbird DVF-100 or a Hunter valve.

    And I bet if he took the solinoid off, and stuck a marking flag down the tiny port there, everything would be fine. Probably from sloppy glueing.
  7. londonrain

    londonrain LawnSite Silver Member
    Messages: 2,129

    I have worked on a few toro 250 valves that would not open period. I Replaced everything IE: top, diaphragm, solenoid, cleaned port hole, etc... changed the body then it worked. Plus one or two Hunter SRV valves same thing... Also if you have a Hardie/irritrol 205 type valve that will not open fully or low flow, then the diaphragm needs replacing. We changed out two last week with 1992 date codes...
  8. Duekster

    Duekster LawnSite Fanatic
    from DFW, TX
    Messages: 7,961

    Thanks, it is a DV 100 SS.

    And yes, running some new guys this year. I have never had this problem in the past.

    I will let you know.

  9. Duekster

    Duekster LawnSite Fanatic
    from DFW, TX
    Messages: 7,961

    Why yes they do but this was not on the exam.
  10. DanaMac

    DanaMac LawnSite Fanatic
    Messages: 13,211

    I'm just bustin' your balls. Don't take it personal :)

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