Leaking sprinkler head

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  #1  
Old 10-28-17, 06:11 PM
L
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Leaking sprinkler head

We have a 4 zone toro system. Everything works fine but zone 4 leaks out of the heads forever. Yesterday I opened all the valves and everything looks fine. Over time I have replaced many heads with RainBird SAM heads,, but that is getting expensive. New valves / new solenoids - still leaks. What next ? Thanks.
 
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Old 10-29-17, 05:41 AM
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Most likely dirt in seals of valve. Take top off and clean. If valve body is scored than valve will have to be replaced.
 
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Old 10-29-17, 05:48 AM
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If there is no dirt inside the valve I would first try replacing the diaphragm. While you have the valve body opened run your finger around the surfaces where the diaphragm touches feeling for the scoring/scratching that pugsl mentioned. If it feels smooth I would would just try a new diaphragm but if you feel that the body has been eroded/scored away then it will need to be replaced.
 
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Old 10-29-17, 07:00 AM
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Are the heads below the valve such that all the water in the line is leaking out till empty of is the leaking water constant?
 
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