Emech Control Limited have identified applications in wine making where accurate yeast temperature control is required. Industry Requirement Specific temperature control is required for the regulation of yeast activity. Yeast tanks require the introduction of hot water into the heating bands at a specific temperature to start the yeast process. Once this process is activated, the yeast activity produces its own heat, and the introduction of cold water in the heating bands is required to control this process. Industry Solution An Emech 3 port valve can be programmed to provide variable flow from the hot inlet only or variable flow from the cold inlet to the heating bands. In the neutral band area (ie. Between cold and hot ports) – a bubble tight shut off is achieved by the ceramic disc. This technology was not available with traditional three port control valves systems but is now possible. At the return side of the tanks, the Emech actuator software can signal the return of the water to either heating or cooling tanks thus saving water and heating costs. The advantage with this system is that it is easy to install, fully automatic, programmable, highly accurate and offers savings in both energy and water costs.