Question
Hi, All of a sudden I have 1 of 4 Hunter SRV valves that will not shut off. It runs when the other zones are running and forever after. I've cleaned the valve, swapped the selenoid with another, swapped the wires in the control panel with another and still it won't shut off, please advise. Bill

Answer
Bill,

Sounds like you have done all the right things:

Cleaned the rubber diaphragm
Checked the solenoid

I would recommend that you purchase a replacement SRV valve and swap diaphragm, solenoid and lid and see if that does it, but before you do that I would also flush the valve by taking off the lid and removing the diaphragm then flushing water through it. Just be careful not to flood the box and not to allow any debris back into the valve.

Good Luck,

Bob