DanaMac: Just out of curiosity, is the city's water plant at the top of the highest mountain? Our towers here range about 100-150Ft which is enough to give the homeowner about 40-50psi static (depending on location from the tower) I've seen it higher & lower but not by much. You're right about low pressure being an issue... Specially on city and the installer puts 12-15 mist heads with 30-40 PSI dynamic through a 1" line. I always get amazed when I see pictures of all the tiny little manifolds, 1" valves, etc. Most of the stuff I work on is from 1.5" & up, including residential. Although I'm seeing some of the smaller stuff now that I'm picking up zero lot line new construction residential properties. Anyway, thanks for the education... knowledge is power!