The question is not "How many heads on a zone?" but rather "How many Gallons Per Minute on a zone?"
Sprinkler heads need two things to work, water and pressure. Water for obvious reasons but it's the pressure that
pops the head, turns the head and throws the water. Using water reduces the water pressure (PSI); use too much water
and the pressure drops below what the heads need to work. So you must balance how many gallons you use with how much
pressure you lose.
Call or stop by and we can help you calculate your gallons per minute.
If you have any more questions please call or stop by, we would be happy to answer them.