Originally Posted by jvanvliet
Funny eh? the differences in areas; 1" valves are unusually small in my market, 1.5 more common even for residential.
Smaller valves for city water & then used as a master for an indexing valve.
That is interesting, I've never, except in large commercial sites, used anything more than 1", since I never exceeded 12-15 gpm per zone, even though I've used 1 1/4" mainline pipe in the megas and 1" for the sub-laterals.