Everytime water is turned on or the toilet flushed etc, we hear loud
humming in the pipes. The vibration from this can be felt in the cold
pipes when touched. To knock the humming off you have to turn a cold
tap on quickly and fully, run a few seconds then off again, and this
usually cures it. What is usually the cause of this?
Some toilet cisterns have a rubber diaphragm in the ball valve instead of a
washer, as this diaphragm weakens it can set up a vibration in the pipes
when the cistern is nearly full, caused by the movement of the water causing
the diaphragm to oscillate.Replacements cost only a few pence. If the noise
happens after flushing a toilet try holding the ball valve to see if it
Sounds like water hammer, which is usually caused by a worn water valve. You
need to change the washer or diaphragm in the valve that is causing this
noise, or change the whole valve. If the toilet cistern is fed from the
rising main then the valve in the toilet cistern is the culprit. But if the
valve in the toilet cistern is fed from another cold water tank that has a
ball valve then you need to make sure which valve is the culprit.
Thanks to all who replied to this post. Valve in water tank, water
hammer/pressure all related to the problem.
Thanks again for all the help and advice - SPOT ON!!!!!
PS: Thanks to the comics also, who put some humour into the
Phil Anthropist wrote:
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