Wonder if you can offer any advice, my mother had a problem with a leaking cold water storage tank, which had to be changed, as she needs/wants to change the boiler to a combi we decided to ask her friend who is a gas fitter to do a tempory repair until he replaces the boiler.
Which he gratfully did by fitting a 20 gallon tank to feed the shower then connected the taps up to the mains.
He has now got us out of trouble which is great, but now there is a great noise which happens everytime we open the cold tap in the bathroom which I take it is pipes vibrating, there is an isolating valve on the feed which we have tried to adjust but doesn't help. The taps are cheap ones.
Bath taps will be 22mm feeds whereas others will be 15mm so it defo sounds like a pressure/flow cause..... either loose pipes vibrating under new pressure or too much pressure, stop cock needs knocking back.
The actual taps rarely have a problem going from low pressure to high..... its normally a problem when people fit mains pressure taps to low pressure systems instead. They have a minumum bar required.