Custom shower - water lines after valve

[jusluv2ski]

I have a 3/4" thermostatic valve to a 3/4" inlet of the diverter valve. the diverter has 3 - 1/2" outputs. Fixtures(3 body sprayers, handheld and head) are 1/2". I am on a well. Does it help my water pressure and/or volume to convert the 1/2" outputs to 3/4" then back down to 1/2" at the fixtures? i thought someone told me this but i can't remember why. or am i ok with 1/2" straight to the fixtures? the diverter valve is capable of running 2 of the 3 fixtures at a time.

thanks

 

[phishfood]

1/2" to the separate heads will be fine. The restriction provided by the heads will not allow even as much flow as the 1/2" will provide.

 

[Plumbero007]

what is your pump well pressure, at start of cycle and end of pumping cycle?. to run 3 heads you will need at list 55 psi