Hi guys, I am starting my sprinkler install and had a question and wanted some comments. I live in New York and have 1" poly coming into the basement from the street. From there to the meter(5/
the pipe reduces to 3/4" pex for about 2 feet. It then goes into a 3/4" rpz then I up sized the outlet to 1" for about 40' to the valves. From there, I plan to run 1" poly to the sprinklers in the yard. My question is does the 2' between the 3/4" and the 1" matter in regards to calculating gpm? I thought not, as I read on irrigation tutorial that under 5' was ok to use the larger pipe for the design. My static psi is 70 and I'm sizing for 14 gpm to be safe. I will have 8 zones for just under an acre of lawn. My other question is do you think the rpz is ok being 3/4"? I know it will support 14 gpm, and I factored in a 15psi loss for the rpz. Any comments would be appriciated.