Our city has untreated water for irrigation systems, but I only have 48 psi at the best, and 40 psi when a lot of folks are watering. Naturally I plan on setting my timer outside of the heaviest usage time. Using 1" sch-40 PVC, I can get 13 gpm, but I can't find anywhere what flow rate you get at 40 and 50 psi through a foot of 3/8" ID funny pipe with their 3/4" L-connectors on each end. I'm just looking for a ball-park figure. Hopefully 3-4 gpm. Orbit is a local company and their design gives m...
