Knocking Pipes


Old 11-24-00, 10:52 AM
Visiting Guest
Posts: n/a

There is a Steady knocking from a copper pipe in my basement.I've isolated the pipe thats knocking It ranges in how loud and rapid it knocks , the highest being the washer running midrange being the toilets
flushing to the lowest being the sinks that the pipe suplies. I've bled the air form the pipe with the valve locate about 2 feet away from where i can feel the vibrations
Sponsored Links
Old 11-24-00, 05:33 PM
Join Date: Sep 2000
Location: United States
Posts: 18,497
Received 0 Votes on 0 Posts

Are you on city water?

Does it knock all the time, or just when the water flow starts or stops?

This is probably classic water hammer, which is caused by pipes not properly secured. It is probably NOT caused by air in the pipes (how come everybody wants to blame everything on air in the pipes?).

Your choices are: (1) ignore the noise, (2) secure the pipes, or (3) install water hammer eliminators. I recommend (1).
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Ask a Question
Question Title:
Your question will be posted in: