You are not logged in.

Dear visitor, welcome to SPRINKLER TALK FORUM - You Got Questions, We've Got Answers. If this is your first visit here, please read the Help. It explains how this page works. You must be registered before you can use all the page's features. Please use the registration form, to register here or read more information about the registration process. If you are already registered, please login here.


Starting Member


Tuesday, March 22nd 2011, 5:12pm

All zones open at same time

I have an 11 year old system. It has an antisyphon valve with a single solenoid wired to a mechanical timer (the one with time and day wheels that are set with pull up pins), and the antisyphon valve goes to a mechanical index valve to open and close each of 3 zones (it is a four zone valve with a 3 zone cam).
It worked fine until last month when the timer bit the dust. I replaced that timer with an Orbit digital controller. Thats when my problem started (it just might be coincidental).
I installed the controller, tested and it controlled the 3 zones. When I ran another test the first zone didn't open, however all 3 zones opened and when that cycle ended the controller shut off. Another test and worked fine, but one more test and all 3 zones again the same time, and so on and so on, etc, etc.
Is this a problem with the index valve, and can it be repaired? I have opened the valve several times and tried to clean (it wasn't dirty or clogged), and reseat the seal. I haven't had much success so far. ?(
Thanks for any imput,Sam



Posts: 2,324

Location: USA


Wednesday, March 23rd 2011, 2:27am

I have zero experience with an indexing valve. I've never seen one installed. I've never taken one apart. I do have three new ones sitting on a shelf. That my expertise. There is a member of this forum, Bill Painter. I haven't seen him on here for a while. He knows about indexing valves. Here's a link to his site. He does carry some repair parts. You can email him for more info.
You'll have to cut and paste the link into the address bar for it to work.


Supreme Member

Posts: 493

Location: Seattle


Wednesday, March 23rd 2011, 10:59pm


If Bill isn't responsive I know a guy too.

I don't have any experience either. I understand the concept , just no real life field work on them ( only dealt with one system a few years back)

There is a guy on another forum that is from the south that 90% of what he deals with is indexing valves
His user name is Buck_Wheat on, shoot him a message , there is a irrigation forum. Though it's mainly for irrigation pro/ companies and not for homeowners.


Supreme Member

Posts: 5,298

Location: Metro NYC


Thursday, March 24th 2011, 7:36am

Owners of indexing valves need to be able to disassemble and reassemble them. The replacement controller being used here may not have sufficient off-time between zones. The supply pressure has to drop to zero and stay there long enough for the internal mechanism to move into position for the next zone.

Similar threads

Rate this thread