Just turned on the IGS and the water pressure is unusally strong. Three zones came on at the same time with plenty of water pressure. I had to manually shut off the zones at the celunoid and turn on the last zone which also had strong pressure. Is there something that controls the water pressure? I even closed the main shutoff valve half way off and there was still too much pressure. I am figuring that this may be the cause of the zones staying on at the same time too... Help!!!
