The three-way mixing and diverting valve is designed for central heating, cooling, or domestic hot water systems. They are commonly used as mixing valves to regulate the supply-water temperature in installations. The required supply temperature is achieved by mixing the medium from the boiler supplying the system with the return medium. The valves can also be used as diverting or switching valves. Mixing valves are ideal for systems requiring precise central-heating supply temperatures, boiler-return protection, and many other applications. MIX3 valves can be controlled manually or automatically using a mixing-valve actuator. Installation of the IBO STER D actuator is recommended.