Can't manually turn valve on anymore

Discussion in 'Irrigation / Sprinkler Forum' started by jerbark, May 11, 2014.

  1. jerbark

    jerbark New Member

    Messages:
    5
    Location:
    CA
    I just discovered that my gardener "accidentally" cut the 2 wires connecting the sprinkler valve to the controller/clock i.e. it's just a stand alone valve now. The gardener can't come out right away to fix it, so for the past few days, I've been manually turning the valve on to manually turn on the sprinklers. Today I went out to do the same thing and the water won't come on at all (when it was previously manually turned on, it would leak/drip quite a bit at the valve, but that doesn't even happen now). It's just a manual value now like a faucet, right? Why won't the water go on when I turn the valve? Please help!
  2. DonL

    DonL Jack of all trades Master of one

    Messages:
    4,451
    Location:
    Houston, TX
    With the wires cut the valve will be off by default.

    How it ever worked is something.

    Sounds like it is working correct now, it may have had trash in the valve.

    Connecting the wires should make the valves open, Unless they are shorted together.


    Good Luck.
  3. jerbark

    jerbark New Member

    Messages:
    5
    Location:
    CA
    Did you even read my postl?

    I'm truly hoping that someone who actually read my post, will give me some help.
    Thanks in advance.
  4. BRD

    BRD New Member

    Messages:
    53
    Location:
    northeast
    Once you open the bleeder screw on top of the valve or turn the solenoid open enough that water begins to spirt , the valve should open. are you sure that the main shut off valve that provides water to the valve is OPEN. Irrigation valves are electrically actuated but hydraulically operated for those of you that do not understand how they work.
  5. jerbark

    jerbark New Member

    Messages:
    5
    Location:
    CA
    BRD, first of all, thank you very much for trying to help/educate me.

    >>Once you open the bleeder screw on top of the valve or turn the solenoid open enough that water begins to spirt , the valve should open.

    This particular valve doesn't appear to have a "bleeder" screw (I have that on some other valves). This just has a valve at the top, where, if I turn it, the water USED to manually come on. Manual operation was working fine (a pain in the neck, but working) until a couple of days ago when it just stopped working. I thought that manually operating a valve wasn't much different from turning on a hose faucet i.e. when it's in the off position, the water won't go through and when it's turned "open" the water goes on...but this stopped happening.

    >>are you sure that the main shut off valve that provides water to the valve is OPEN.

    The only water shut off to this value is about 5" away and it's the main water shut off for the entire house, so I know that it is open. My question is - why/how would a valve just stop working "manually"? This doesn't make any sense to me.

    >>Irrigation valves are electrically actuated but hydraulically operated for those of you that do not understand how they work.

    OK, so I definitely don't get the "electrically actuated but hydraulically operated part", maybe that's the problem?
  6. BRD

    BRD New Member

    Messages:
    53
    Location:
    northeast
    Are you getting water to spirt out when you twist open the valve solenoiid? If not open it until it does. It is necessary to relief the water pressure at the top of the valve diaphragm in order for the valve to open. This is part of the hydraulics of its operation. I just wanted to be sure you have water to the valve to begin with. If it worked before it should work now. The diaphragm may be stuck closed, but I kinda think that is unlikely,, yet possible. Try it, if it does not work let me know what make/model valve you have. one other thing, if the valve has a flow control handle at the top, be sure it is all the way open
  7. jerbark

    jerbark New Member

    Messages:
    5
    Location:
    CA
    I sent you a post yesterday, but it doesn't appear to have come through, so here it is again<g>. First of all, thanks for all of your help so far.

    >>Are you getting water to spirt out when you twist open the valve solenoiid?

    I WAS getting water to come out, but now I don't get anything.

    >>If not open it until it does.

    NOW, even when I open it all the way, no water comes out at all. Previously, when I manually turned the solenoid(?), the sprinklers would come on and a decent amount of water would leak/drip out around the solenoid. Now, when I manually turn the solenoid, nothing happens, not even a drip.

    >>It is necessary to relief the water pressure at the top of the valve diaphragm in order for the valve to open. This is part of the hydraulics of its operation. I just wanted to be sure you have water to the valve to begin with.

    I definitely have water to the value - nothing has changed in this regards.

    >>If it worked before it should work now. The diaphragm may be stuck closed, but I kinda think that is unlikely,, yet possible.

    This sounds like what is happening....I don't understand it though and I don't know how to fix it.

    >>Try it, if it does not work let me know what make/model valve you have. one other thing, if the valve has a flow control handle at the top, be sure it is all the way open

    I don't know the make and model off hand, but I've loaded 2 pics onto Flickr (I hope you can access them).

    First pic shows the 2 values. The left one is the one that the wires got accidentally cut.

    https://www.flickr.com/photos/57149023@N08/14192031851/in/photostream/

    This pic shows the red, water shut off value which not only controls the water to these 2 sprinklers, but to the entire house i.e. it's open and working so I know that the sprinkler is getting water. Also, the other sprinkler on the right is working fine using the sprinkler timer. https://www.flickr.com/photos/57149023@N08/14008680800/in/photostream/

    I hope this helps! Thanks again.
  8. BRD

    BRD New Member

    Messages:
    53
    Location:
    northeast
    That is an electric anti siphon valve. Not familiar with that brand. They look pretty old. Anyway, the gray ring just under the black part with the wires (solenoid), does that turn? If it does rotate it counter clockwise. If not, and you have loosened the solenoid sufficiently without results, then your diaphragm must be stuck closed or the plunger is stuck in the solenoid, but by loosening the solenoid enough to the point of almost taking it out it should come on even with a stuck plunger. Aside from that you might have to replace the guts or a new valve.
  9. DonL

    DonL Jack of all trades Master of one

    Messages:
    4,451
    Location:
    Houston, TX
    If it is stuck closed, Then hooking the wires backup may help un-stick it.
  10. jerbark

    jerbark New Member

    Messages:
    5
    Location:
    CA
    I tried what you suggested, but still no water. I just ended up replacing the value and now it works fine. Thanks so much for all of your help and patience!
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