Size
vs. Pressure
Mother nature
and physics provide some rules that apply to shower head pressure.
Every house has a given water supply pressure, and for any given
supply pressure (as a starting point) the resulting pressure coming
out of the shower head nozzles will decline with the number of
nozzles. Different types of nozzles can greatly affect this, but
if we are comparing shower heads with identical nozzles, the shower
head with the most nozzles will have the weakest pressure and
the shower head with the fewest nozzles will have the most pressure.
For example, it is guaranteed that in any particular shower our
5 1/2" Classic will provide more stream pressure than our
10" Classic, and our 6" Oasis will provide more stream
pressure than our 10" Oasis, simply because the available
pressure gets divided into fewer streams.
For this reason
we highly recommend choosing larger shower heads carefully to
ensure excellent nozzle quality to make the most of the available
supply pressure. Learn more about
Machined Cast Brass Nozzles

The machined cast brass nozzles of a "Classic" rain
shower head
(click for more info)
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