QuestionWhat causes a solenoid valve to leak by, while another zone valve is operating. Obviously, the leaking solenoid valve takes some of the pressure away from the operating zone.
AnswerThanks for your question.
Commonly, the valve diaphragm is not closing all the way. What this means in normal terms is: the rubber diaphragm in the valve is torn or there debris in the valve. Often it is debris.
You will need to open the valve and check the rubber parts and carefully look in the bottom of the valve for any dirt, stones, etc
Matt
