Low howling sound from system

[darkan9el]

Hi all, I have a problem, well I think its a problem. when we flush the loo we get a low howling sound, we've dubbed it odins horn as it sounds like a viking calling.

It will stop if I turn such as the cold tap on, can anyone enlighten me as to how to stop this or at least diagnose it so I can either minimise the sound or hopefully get rid of it altogether.

TIA.

 

[Hugh Jaleak]

Likely 'water hammer', the ballvave is vibrating akin to a reed in a wind instrument. Try turning main stop tap down slightly to reduce pressure, failing this you will need to replace the valve...

 

[Burnerman]

Its the washer in the loo fill valve vibrating that causes this...either fit a new washer or a new fill valve.
Reducing the pressure by turning a tap on helps things, but the noise will remain!
John

 

[darkan9el]

Thank you for the reply. Will replace washer and if need be the whole thing.