Our chilling unit (A unit) is modeled after the Votator type of scrap surface heat exchanger and combines the special features of the European design to take advantage of the two worlds. It shares many small interchangeable components. Mechanical seal and scraper blades are typical interchangeable parts. The heat transfer cylinder consists of a pipe in pipe design with inner pipe for product and outer pipe for cooling refrigerant. The inner tube is designed for very high pressure process operation. The jacket is designed for flooded direct evaporative cooling of either Freon or ammonia.