cistern washer don't last 6 months

En el artículo , dave escribió:

Put a valve in the feed to the cistern and turn it back a tad. One of these:

That will just reduce the flow rate, not the pressure once the valve starts to close.

On Tuesday 14 January 2014 19:07 dave wrote in uk.d-i-y:

to my new cistern (after throwing away the piece of crap supplied with teh cistern).

We have high water pressure, though I have a regulator to take it down to about 5 bar.

That valve has been very well behaved and I like the fact it's got a nice solid brass inlet thread.

Davidm wrote in news: snipped-for-privacy@4ax.com:

Indeed. Something like this would be much better.

Tim

That will only reduce the *volume* not the pressure. The water pressure will remain constant whether it is flowing through a 15mm valve/pipe or a 1mm.

Ah! I see someone else has already said this :-)

Are you sure you have not got a low pressure valve in there rather than a high pressure one? Brian

Note that this type of pressure reducing valve doesn't work very well when there's no flow - the static pressure will be higher (although probably not as high as the inlet pressure). The spec for this one evens states "dynamic control only" - i.e. doesn't control the static (no flow) pressure to the same extent.

snipped-for-privacy@cucumber.demon.co.uk (Andrew Gabriel) wrote in news:lb5o5c$t2o$ snipped-for-privacy@dont-email.me:

Good point - but I was assuming that errosion was taking place when the valve is open - due to the high pressure and high flow.

Ah, well spotted! I just looked for the cheapest and clearly "cheapest" isn't always what you want.

Tim

Thanks for all replies - a soln is not so easy it seems but a few things I can try.

Tim, Think I will get one of these. Do I need anything else (kit wise) to fit this (handles etc) It's not clear from the pic and Wicks et al don't know.

-Dave