Noise in the pipes!

[p1darbs]

Hello everyone... I am having a problem with banging sounds everytime I turn off the cold taps (quickly) or when the washing machine ends the fill cycle and so with the dishwasher... It really is doin my head in.

It seems to be related to the water presure, I have reduced it by closing the stop cock valve at the main entry to the house but this has slowed the water fill cycle. Although it has reduced the banging it hasn't cured it.

Can anyone advise please?

Paul.

 

[seco services]

sounds like you have water hammer.
check all the pipes are secured properly.
or youcan fit a water hammer arrester

http://www.rd.com/images/tfhimport/2005/20050501_Home_Care_page002img005_size2.jpg

 

[p1darbs]

Thank you for that fast reply ... Water Hammer? OK I will check the pipe work again as I know now that the bathroom has been changed around in the past

 

[Garthzog]

If you've had the pipes changed recently it could be there's a 'deadleg' there somewhere. It's a length of pipe that's been capped off so the water has nowhere to go. I'm not sure what causes it exactly but perhaps if some air is left in there it can compress when the water is shut off and the noise of the water hitting the end of the pipework causes the 'bang' you hear (guessing).

I recently had the same symptoms suddenly appear in my house (shutting cold water tap caused a 'bang') and then realised it was because I had shut off the cold supply to the combi boiler in the garage while I was doing some work on the house plumbing. Opening the valve stopped the hammer.

Zog.

 

[seco services]

a dead leg can act as a arrester for water hammer and compresses the air in the dead leg.

 

[p1darbs]

Thanks so much... That really is some great info and I would say an accurate diagnosis as I have found not one but 2 dead legs in the Kitchen and Bathroom along the cold water flow. Cheers for the advise on this I will let you know when I have sorted it out.

Paul.