The pasteurizer is suitable for heating, sterilizing, and cooling heat sensitive liquids such as milk, beverages, fruit juices, foods, etc.; so that the products can be cooled after sterilization to achieve the purpose of extending the shelf life. Uconn pasteurizer can customize different pasteurization system equipment according to customers' different process requirements for materials. The Uconn pasteurizer has a high-precision automatic control system to realize the automation and precision of sterilization.