electric showers and water pressure

Flow rate at kitchen tap is about 30 litres/minute. Could this mean too high pressure for the shower, which I seem to recall requires a max of 10 bar?

It's the rate of flow that determines how hot the water gets. Can't you throttle it back by closing off a service valve a bit?

Its not the pressure you need to reduce so much as the flow rate. Simply partially turning off the showers service valve should do this (assuming one is fitted; if not, that is what you need to buy!)

In article , normanwisdom writes

Previous good performance followed by running cool may point to a failure of one of the heating elements (there are invariably two) or the associated controls. Does the shower have two power settings and is there a noticeable difference in warmth between the two? You could also check it is drawing the full 9.5kW using a timed test on your electricity meter.

Or, if difficult/inconvenient/too bothersome to fit, a different shower head with lower flow, or even a (googles) "hose washer"...

Thomas Prufer

Ta for hints. Closing the stop tap a bit does work, but then doesn't work if you flush the loo etc. Pressure falls too low. Have gone for the Comap PRV solution

cheers Jacobn

It may be you are fixing the symptom rather than the problem, but time will tell ;-)

Fitted prv. It now works perfectly. Left it at the factory setting of

I'll go and have a warm shower!

cheers Jacob