My cold water tap to the bath is fed from a tank in the loft but the sink tap is mains fed. I found that the bath tap flowed to a trickle when it had been used a lot and assumed it was silt from the bottom of the tank. I managed to restore the flow by using a compressor to back flush the pipe from the tap end, resulting in limescale being pushed back up into the header tank. BEWARE too much pressure could result in burst pipes especially if they are well blocked.
John M
January 2010
It is fed from main with ball control
Mr X
October 2009
I have two tanks on the loft and cold water tape from bathroom I have removed and put END compressions type stop, I found cold water is running very slow I have remove all the air from the cold water tapes.
mr x
October 2009
could be that your bath tap is fed by 22mm and your basin is 15mm diameter pipe
even though it seems your getting more out of the sink the flow will be the same from both