What are the limits for running more than one valve off of a controllers single zone output? I know that some controllers can safely run two .3 amp (inrush current) 40 ohm valves simultaneously per station. With a 1.5 amp station output current, it would appear that current wise some controllers should actually handle more than two valves. But understanding that two valves in parallel would create 20 ohms, and three would be down at 12 ohms would that cause the controller to recognize this as a short circuit? Or what about three valves in series at 120 ohms? Will the solenoids fail to activate? Heres a third option. One valve is in series with two valves connected together in parallel. Got the picture? This would be 40 ohms in series with 20 ohms (2 in parallel) for a total of 60 ohms. This isn't too far out of line is it? Or a fourth option One valve is in parallel with two valves connected together in series, and this would give 40 ohms in parallel with 80 ohms (2 in series) for a total of about 27 ohms. That's fairly close to par, eh?