A shower mixer valve has two inputs, one for hot water and one for cold water. These two inputs are mixed together to the temperature you have selected with the easy-to-use single lever. For improved safety and comfort, choose a mixer shower with a thermostatic shower valve which protects you against sudden temperature changes if someone uses water elsewhere in the house.
A three way shower mixer will control a single outlet such as an over head shower or a hand held telephone shower. It is called a three way shower mixer since it has TWO water inlets, hot and cold, and ONE outlet. You will have a choice of handles and designs to choose from to match the style of your bathroom.
A four way shower mixer will control a two outlets such as an over head shower AND a hand held telephone shower OR bath spout. It is called a four way shower mixer since it has TWO water inlets, hot and cold, and TWO outlets. You will have a choice of handles and designs to choose from to match the style of your bathtub or shower area.