Jethro_uk wrote in
:

On Mon, 18 Feb 2019 10:57:00 +0000, Stephen wrote:

Hello,

I have some water hammer caused by the washing machine and
dishwasher. Should I get some of those arrestors and fit one by each
appliance?

I measured the water pressure and it is 4 bar. I'm sure I read here
that it is useful to have a pressure reducing valve set to reduce
incoming pressure to 3 bar. Is that right? Would that be a better
idea?

Thanks,
Stephen.

Fit an isolator and half-turn it ? When I redid all our plumbing I
fitted isolators as a matter of course anyway.



They can be noisy though.

Sometimes hammer can be due the the filler hose being too elastic.