Hi - My residential sprinkler system consists of 6 zones. 4 of these zones use rotary Hunter valves. One of these 4 rotary head zones has an issue that I do not know how to solve. This problem zone valve struggles to shut off completely. In fact, it oscillates for 2-3 seconds before completely shutting off. I am able to visibly see water trickling out of some of the heads during this time. There is also an audible thumping sound until the valve closes completely. I had always suspected a faulty ...
