after flushing the loo the pipes upstairs howl/whine for a few minutes after but can be quitened somewhat if the upstairs tap is turned on, is this a high-pitched 'water hammer' effect? If so how to fix? Cheers
Howling pipe(s)
- Thread starter LJW61
- Start date
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change the ballvalve 
Thanks both.
Would this be the cold-water valve in the loft or the one in the loo cistern?
Cheers
Would this be the cold-water valve in the loft or the one in the loo cistern?
Cheers
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toilet cistern
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