Plumbing Question

What causes the thus from the cold water pipes when the cols tap is turned off?

OOPs this should have read Thuds not Thus LoL.
This happens either when the cold tap is run and then turned off or the wasing machine fills and stops when full.
This is just a single thud or knock not a multiple knock.
I was told by someone that there is a dampener somewhere in the system that holds a little airspace and that it may have become saturated with water over time, is this true?
it never used to do this! any tips ?
Thanks In advance

1 Answer

Best Answer

usually these symptoms are a result of unsecured pipework in the system. locating the unsecured pipework is the difficult bit. You may be able to remedy the thud by partially closing the main stop tap this will reduce the flow maybe enough so as the water flow will build up to full preasure less dramatically so the thud will not occur. try it and see if it works.
I have tried to describe this in laymans terms so it will be understood and hope I have succeeded-Kevin

Answered 11th Feb 2012

kevin cassidy building contractors

Member since 16 Dec 2010

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