Vibrating 15mm pipe feeding the cold water tank? All aspects of plumbing questions and answers, help, tips and information

[BriJo]

I have a 15mm copper pipe feeding a cold water tank which is very noisy after flushing the wc and using the shower.

I have clipped the pipe which vibrated alarmingly, this has helped but the noise still persists. I wonder if it may have something to do with the float valve in the cold water tank?

[plumbbob]

It is definitely the valve. As the valve wears, and the rubber seal becomes hard, the flow of water causes the mechanism to oscillate as you describe. It is a common problem. You have to put up with it, or replace the whole ball valve.

[htg engineer]

Replace the valve.


htg

[rosebery]

Yes replacing the entire valve is cheaper than messing about trying to repair the current one.

Cheers