I have an underground sprinkler system with 6 active zones. I have had all kinds of issues over the years that I have fixed, but I now have one that has baffled me. Recently one zone decided to act up. Basically, when the zone becomes active via a controler, it runs fine for a few minutes, then looses 90% presure. I have replaced the value, fixed wiring, tested my well, checked for leaks etc. with no resolution.
I don't understand why initially it works great then goes flat. All other zones operate correctly except this one. I've tested it over and over yet it still goes flat?
My system is twenty years old and has worked very well over the years and hear in Florida we don't worry about pipes freezing etc. It's loosing pressure somehwere that I have yet to find.
Any ideas?
Thanks.
------------------------------------- SteveO