I have a main 3/4" supply run with a 1/2" 'T' supplying a 1st floor powder room (sink and toilet). Directly underneath I am adding a basement powder rrom (sink and toilet). Due to cramped space I am unable to access the main 3/4" run with its 1/2" tee but can get to within 6"-8". Running two powders off single 12' 1/2" supply probably isn't great. So I would like to cut off 1/2" within 8" of 'T' and transition to 3/4" CPVC to then run 12' to over/under powder rooms.
(1) Will having the 12' of run as 3/4" with only a minimum of 6"-8" of 1/2" help in terms of capacity?? or is 3/4" totally limited by 1/2" "neck"??
(2) I prefer to work with CPVC instead of copper, although I have worked with copper in the past. It really doesn't matter whether its copper or CPVC.
Simply put, I will have a 12' 3/4" connected to 8" of 1/2" copper connected to 3/4" main supply. Will the effect of 8" 1/2" copper totally wipe out the gain of 12' 3/4" supplying two powder rooms.
(1) Will having the 12' of run as 3/4" with only a minimum of 6"-8" of 1/2" help in terms of capacity?? or is 3/4" totally limited by 1/2" "neck"??
(2) I prefer to work with CPVC instead of copper, although I have worked with copper in the past. It really doesn't matter whether its copper or CPVC.
Simply put, I will have a 12' 3/4" connected to 8" of 1/2" copper connected to 3/4" main supply. Will the effect of 8" 1/2" copper totally wipe out the gain of 12' 3/4" supplying two powder rooms.
