Three Way All in One Mixer Taps eliminate the need for an extra tap to be installed on your kitchen bench or sink. These three way mixers can replace an existing mixer and are similar make and specifications to big end brands like Hans Grohe, Franke, Dorf, Methven, Ram, caroma and Blanco without the huge price tag. They feature Hot & Cold Mains Water on one side and filtered water on the other side. Three way mixers can be used with most under sink water filter and purification systems.