Screaming taps

[chrisquinze]

I get a very high pitched screaming noise from one of my taps (cold) in my bathroom whenever its turned on. Its quite loud and makes a good job of going through walls!

It only seems to happen when a half decent amount of water is flowing i.e. you can't hear it when there's just a dribble.

Anyone know what causes this (presumably something to do with air pressure) and how to fix it?

 

[Nige F]

don`t presume ........it`s the washer