install almost done. Finally Haven't put any heads on yet, flex pipe is about 6" above ground and trenches are somewhat backfilled. Need to flush lines completely. I did buy caps to put on flex hose to help flush each line properly. Have not connected wiring to control box yet. I did activate an existing zone of sprayers that has been unused for the past four months man, sure is throwing out much more water than ever before. I'm getting water hammer on every valve using solenoid. They valves do have flow control and I haven't begun to flush completely yet.