Hi
Have just been relocating my water feed tank to an en suite, and temporarily connected the cold water mains supply to a mixer tap on a wash basin previously fed by the above tank. Its made me realise that it would be nice to have clean mains drinking water to the basin, the water out of the tank tastes Sh&(^te. The problem of course is the mixer needs equal pressure feeds of hot and cold to work correctly without back feeding one or the other. My question:- Is there an easy way of connecting a mains fed cold and a tank fed hot, to a mixer without the cold back feeding up the hot tap if both are turned on?? I don't want to change the tap. Would a standard non return valve in the hot feed do the job as used on central heating systems to stop thermo siphoning?
Dave