It would be real nice if LandFX would resize the valve automatically when sizing, or resizing , lateral lines. For instance, according to the catalog, a Rain Bird PEB/PESB operates best at flows between .25 and 20 GPM with a 1" valve; Between 20 and 50 GPM with a 1-1/2" valve; and greater than 50 GPM with a 2" valve.
Currently we run a valve schedule and then manually resize the valves as appropriate.
It's funny that the program asks before one inserts the head to specify the size? That's like asking "What is your flow?" before the pipes have even been sized (which can't be done until the heads have been connected to a valve. - - Oh, I guess you can use Highlight Station. But that's kind of weird to each time do before inserting a valve.