Since fitting a new WC and a new washbasin with a lift and turn tap -
both items now with isolating valves and flexible braided connectors ,
I am amazed by the high noise level when water is running. The noise
seems to come from all of the pipework rather than from a specific
place.
Does anyone have any ideas of ways to reduce the noise (without
reverting to what I had before).

In message
,
DerbyBorn writes
Since fitting a new WC and a new washbasin with a lift and turn tap -
both items now with isolating valves and flexible braided connectors ,
I am amazed by the high noise level when water is running. The noise
seems to come from all of the pipework rather than from a specific
place.
Does anyone have any ideas of ways to reduce the noise (without
reverting to what I had before).

Have you also fitted in-pipe stop taps (or whatever they are called)?

If the water pressure and speed of flow is high (like when you're using
the direct mains), these taps can be very noisy unless they are turned
full on. And even then, the noise is sometimes greater than when they
are not fitted.
--
Ian