Let's say that the pressure reducer for an incoming water line to a
residential house is set
at 50 psi, and that it works "perfectly" in that it will always keep the
downstream p at the reducers exit at exactly 50 psi.
Two floors above there is a shower. (not running)
Assume 17 feet higher than the p regulator.
If we take 34 feet of "head" as being 15 psi, then 17 feet of head is about
Would the (static) pressure at the shower head be, therefore just 50-7.5 42.5 psi ?