Do you use 1 1/2" valves though? I’ve done a lot of research on the internet and nobody seems to ever really answer this question. It just seems weird that there’s not much info about it and that they are hard to find. Which lends me to think that the standard are these 1" valves which means I need to reduce the pipe at some point? Only one of the zones will be on the larger size while the other 4 will be pretty small, actually.