Rick, your system is much more sophisticated than mine. I have used a pressure regulator, but also those Y things with the little shutoff valves can be used instead. I just turn it on a little, and go to the end of the last drip line. If it is dripping and nothing in between has popped loose, it works. We are on a well, with water pressure at 40 psi, according to the gauge by the pressure tank. I watch it for about 15 minutes, giving the pump time to come on, and if all is well it will take care of itself. The amount of water coming out of the hose does fluxuate a bit, and that is what has me confused.
