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Starting Member


Saturday, May 28th 2016, 3:37pm

1 zone stuck open

I have been using my system for 27 years. Occasionally a valve will not close, but cleaning the diaphragm always fixes it. Cleaned all 3 valves but when I open the water 1 zone opens and will not close.Any ideas?


Supreme Member

Posts: 5,305

Location: Metro NYC


Saturday, May 28th 2016, 6:30pm

Diaphragms need replaced even when they are clean. At 27 years of age, "they owe you nothing."

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