Is there a way to determine if my sprinkler system has a pressure regulator installed?
My neighbor and I both built our houses with the same builder at the same time, but had different landscaping contractors do the sprinkler system installs. His yard has 10 zones with about 7 sprinkler heads each, whereas mine has like 17 zones with no more than 4 heads per zone. I should note that NONE of the sprinkler bodies (mine nor my neighbor's) are pressure regulated.
Anyhow, I added a single head to one of my zones and my system does not have enough pressure to allow for the the additional head to function properly. It seems odd that I don't have enough pressure to supply 5 heads on a given zone, while my neighbor has enough pressure to supply 7 heads on a given zone. We're even using identical sprayheads (Hunter Rotators).
The only thing I can think of is that I've got a system wide pressure regulator installed somewhere on my system, and my neighbor doesn't. But how can I know for sure?