In article ,
Colin Wilson writes:
I used to have a multipoint, and the old shower had a pressure
reducing valve on the cold feed - are valve-equipped flexible tails a
suitable replacement for restricting flow ?

Well, a pressure reducing valve isn't just a flow restrictor.
You can get thermostatic shows designed for the differential
and varying pressures from a multipoint/combi,

(thinking of a tap/shower mixer instead of a seperate shower mixer)

but possibly not as part of a tap/shower mixer.

--
Andrew Gabriel