In an earlier contribution to this discussion,
Tony Bryer wrote:

In article , Imm
wrote:
Look inside a 22mm and 28mm together. the 28mm is bigger.

But they all use the same Synchron motor don't they - and it's this
that fails most of the time IME

This may be true - but it has little to do with the relative flow resistance
of 28mm vs 22mm valves - which is what is being discussed in this part of
the thread!
--
Cheers,
Set Square
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