Whenever we turn taps on and off, or flush, we are getting a 'knocking' noise in the pipes. Have tried turning the stopcock up and down to ses if that will alter the water pressure and make a difference, but no joy. Any ideas please?
kitchen tap is a Blanco mixer tap - have got a replacement valve and have unscrewed the tap but cannot detach the old valve from the 'tap handle'. Anyone know how please?
