Still not getting it
With the Sprinkler Main turned off, I unscrewed the Hunter Solenoid and figured I'd let it drain while we went out. We came back 3 hours later and it was still steadily coming out of the opening. I made sure we had nothing turned on that would use water and watched the little triangle in the water meter (it spins when something is on) and it wasn't turning
(but maybe if it is a very slow usage, it would only turn a bit every many minutes ???). I finally gave up and screwed the solenoid back in. While I had it out I tried squeezing it to see if it was springy, but it didn't squeeze down at all. Maybe it is stuck in the open position ? I've never played with one before.
I figure that my sprinkler main shutoff must have minerals blocking it from shutting down completely, hence there is still a small amount of water coming to the valve and while there is no visible leak now, there would be if I turned the Main back on.
I figure I can't service the valve while there's water running thru it, though I could research and find the parts. But I don't think I'm up to taking the sprinkler main apart. So I'm stuck for now.