Cepex Ball Valve size

[rooneyj889]

Hey all, I am planning my plumbing for my tank and am gonna be using cepex ball valves for my valves. All of my overflow plumbing is 1" schedule 40. Additionally, my return plumbing and manifold plumbing will be 1" schedule 40, however, when I get to my return, I will convert that 1" schedule 40 to 3/4" schedule 40.

My question is, what size cepex ball valves from BRS do I need. I was gonna get mostly 1" with some 3/4" ones, but wasnt sure whether I needed 1.25" ones to fit the 1" piping and 1" valves to fit the 3/4" piping

 

[Gablami]

The 1” ball valves will fit 1” PVC, socket style. Don’t upsize.