Cold Water Pipe Banging/noise

Nov 26, 2005 6 Replies

Rate this thread:

greg leece 20 years ago

We seem to have a bit of a problem with our main cold water pipe feeding the tank in the attic. Whenever we run the cold water, including flushing the toilet and running a shower, the pipe vibrates and makes a banging noise of varying degrees.

With the exception of the kitchen tap (which also feeds the washing machine and garden tap) there are no other "spurs" off this pipe before it reaches the main storage tank in the attic.

I can only assume that somehow air has got into this pipe (we did fit a new tap outside) but am open to other options.

My question is, how do I get the air out/fix the noise and vibration?

Thanks Greg

Vote

shaun 20 years ago

Ensure that the pipe is clipped down often enough and if so consider replacing the float valve.

Vote

Dave Liquorice 20 years ago

Freeing off any clips a bit thus allowing the pipe to move a little but still suported is also a means of stopping these resonances. I tried the tighten/fix everything securley route but that just altered the frequency and onset point of the resonance. Making everything slack cured it...

Vote

david lang 20 years ago

Fit one of these in the pipe somewhere 86348 Flexible Pipe Connector 15mm x

15mm

formatting link

Vote

Doctor Drivel 20 years ago

formatting link

eliminate the problem at source, clipping pipes and replace ball valve in the tank.

Vote

Chris Hodges 20 years ago

Also adding insulation to the pipes touching a wall or similarly immoveable object helps.

Chris

Vote

john 20 years ago

Have you left a hose attached to the outside tap? If so (and the tap is on) it acts as a superb hydraulic accumulator and will create hammer - likewise washing machine hoses.

John

Vote

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required