Install a booster pump or replace valves - or both?
Our irrigation system was installed in 1996. The last 2 or 3 years the water coming out of the irrigation heads has diminished drastically yet the water pressure inside the house is fine. The township came out to the house to check my water pressure at an outside hose bib and said that it's 65 which they consider better than average.
My irrigation contractor said that my valves are wearing but that it would be cheaper to install a booster pump rather than replace all the valves. My concern is that I'll install a booster pump and then he'll tell me I still need new valves.
Does this sound reasonable to those of you with more experience?