one zone of my sprinkler system cannot shut off


  #1  
Old 07-05-11, 02:11 PM
J
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one zone of my sprinkler system cannot shut off

I have 5 zone spinkler system for my lawn. Now the zone 3 cannot shut off even I manually operate it. I have turn off water to stop it. Can anybody tell me what is the problem? How can I fix it? Thanks.
Teaxs is very hot and dry this year. My lawn is turning yellow
 
  #2  
Old 07-05-11, 02:29 PM
P
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You may have debris in the valve, preventing it from closing. If the valve has a bleeder screw you can open/remove it to try and wash out the valve. If you don't have a bleeder turn off the main water supply to the valves and disassemble and clean the valve. It's pretty easy, many only have a few parts inside so it's hard to screw-up.

While you have the valve taken apart inspect the diaphragm for cracks or tears. If it is cracked or torn go ahead and replace it.
 
 

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