Vibrating 15mm pipe feeding the cold water tank?

Postby BriJo » Sun Apr 19, 2009 8:41 am

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?
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Postby plumbbob » Sun Apr 19, 2009 10:26 am

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.
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Postby htg engineer » Sun Apr 19, 2009 6:30 pm

Replace the valve.

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Postby rosebery » Sun Apr 19, 2009 6:50 pm

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

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