Heads only pop after second attempt
I have replaced an existing above ground/surface system with all in-ground heads, 8 zones, existing one inch main, 1/2 inch funny pipe to heads. Irritrol Rain Dial-R controller, Toro TPV series zone valves. I don't see any pressure reducing devices in the system and zone valves do not appear to be adjustable.
Plenty of pressure, dedicated City irrigation system. Nine times out of ten, when activated either by timer, manual at the controller or at the valve, heads will pop an inch or so and dribble. Turn off and restart them, they pop with lots of pressure and stay on normally. This happens with Orbit spray heads in 7 zones and my RainBird impact sprinklers in another. Age of the system is unknown, home is new to me last December and irrigation system was just activated this week by the City. Previous owner is not available.
I re-made all wire connections at the valves, clean and tight.
Any ideas? Thanks!
This post was edited by larrymul on Mon, Apr 22, 13 at 21:34