I am using Rainbird 5000+ heads on a sloping lawn. There is approximately a 4ft change in elevation. When the sprinklers are turned off the lowest head sprays water out the top for several minutes, washing out everything below it, etc. Anything I can do to prevent this.
Thanks,
Mike
Hunter HCV. It's a check valve to put on the last head of the system. I couldn't find it on the online store, look around for yourself, you might find it......[]