I get knocking noise at 3 different places while then CH system is on & the boiler comes on. And when I flush upstairs toilets, when it fills up I hear a loud bang in the pipes within the bathroom somewhere. This is since I have replaced the ball valve with the new type of filler valve thing.

baz, February 2010

kick back " try clipping the pipes to the wall were ever you can get to them ,

mark, February 2010