noisy tank filling

[Jim2]

Bear with me all you plumbimg experts, this will seem a trivial question for you. I have seen on numerous posts on some forums about cisterns and cold water storage tanks that are noisy fillers. When asked to describe the noise it is generally along the lines of "it sounds like water rushing through the pipes" or something similar. I have lived in my house since it was built 18 years ago and have always had noisy filling cisterns and the cold water tank. The worst is the cold water tank in the loft and is worse since a new float valve was fitted about 2 years ago. I have always described the noise as pressure noise, don't know if it can be described as such though. After running hot water it is very noisy and if someone is in the shower upstairs and somone is watching tv in the lounge then the sound has to be turned up a bit to hear it clearly.
I have seen a Fluidmaster valve mentioned that damps down the noise, but does it damp this type of noise rather than the noise of water running into the tank which we actually can't hear.
Could one of you experts please advise me if one of these valves, or any other sort, would help. Thanks in advance.

 

[jam1979]

hot water cylinder isnt emptying before the coldcistern is filling is it

 

[Best]

You firstly might need the pressure checked from the incoming mains water pipe. If it has very high pressure, then a pressure reducing valve could be fitted, although this will probably not stop noise.
Fluidmaster valves fitted to any of the mains supplied cisterns will probably help reduce noise. They also come with a flow restrictor. You can get a side entry valve for the cold tank, but make sure it is the one with a brass tail!
Anywhere a mains water pipe is touching can transmit noise, so check it incase it is touching plasterboard ceiling for example.

 

[Centralheatking]

Nice one - undersized cold water storage tank. My one at Gnome is like that & i am too lazy to change it and as you state sounds like naigra falls on the 3rd floor Centralheatking

hot water cylinder isnt emptying before the coldcistern is filling is it

 

[jonnyswamp]

Agree with above replies, but also:-
Is your tank in the attic fitted with a lid and a lagging kit? (up to date water regs etc)
Is the noise coming from the attic or from your incoming water main?(stop tap)

 

[Jim2]

Agree with above replies, but also:-
Is your tank in the attic fitted with a lid and a lagging kit? (up to date water regs etc)
Is the noise coming from the attic or from your incoming water main?(stop tap)

Regarding first reply. How does one go about getting the pressure tested? For the jonnyswamp reply, the tank is fitted with a lid and lagged. The noise does not come from the attic but from the mains pipe going up from the incoming main.

 

[jonnyswamp]

Make sure your house stop tap is fully open and also the stop tap in the road/pavement as well
If your stop taps (or any other valves on your water main) are only partially open then this can cause noise issues
If you do open them fully, just turn them back a quarter of a turn to stop them seizing (this doesn't apply to isolation valves)

 

[Jim2]

Make sure your house stop tap is fully open and also the stop tap in the road/pavement as well
If your stop taps (or any other valves on your water main) are only partially open then this can cause noise issues
If you do open them fully, just turn them back a quarter of a turn to stop them seizing (this doesn't apply to isolation valves)

Thanks for that advice, will try that asap. Thanks again.

 

[jam1979]

Is you rising main properly clipped I e bangy bangy

 

[Jim2]

No, it doesn't bang at all. Tried opening stop fully as suggested but it made no difference. Will perhaps try a Fluidmaster valve and see if that helps. Thanks to all who have tried to help.