Noisy pipes

[Tomo72]

Hi all,


Several months ago we refitted our bathroom with new bath, toilet, basin, tiles etc etc

Our water supplies are mains pressure cold and gravity fed hot water tank heated by the boiler, this also does the central heating.

The basin tap is 1/4 turn ceramic single outlet mixer tap. When using the cold the pipes make quite a noise whereas the hot is perfectly silent.

As the hot is gravity fed the flow is quite slow compared to the cold so what I've done (probably incorrectly) is close the check valve slightly to reduce the flow to match that of the hot. Could this be the source of the noise? Is there a different (proper but relatively cheap) way of reducing the flow of the cold which will also quieten it down?

The w/c fill suffers from the same problem of noise when filling. The fill valve looks like perhaps a cheap copy of the Fluidmaster type. Could the 'cheapness' of the valve supplied with the toilet be the cause of this noise?


Thanks in advance

 

[jackthom]

Closing down normal valves to reduce the flow tends to create more noise of it's own rather than making the overall system quieter.

A pressure reducing valve in the cold feed will help reduce this sort of noise for all of the cold outlets in the house.

Like this one for example...

http://www.screwfix.com/p/honeywell-pressure-reducing-valve-with-gauge-15mm/69396