Conical Buffer Tank The conical buffer tank is used for processing pumpable products in the dairy- and food industry where hygienic and functional design is of great importance.The conical shape and effective self-adjusting scraper on the stirring device assures that even highly viscous products are transported to the outlet with minimal waste. Furthermore, the conical tank design offers a large surface, resulting in fast de-aeration of the product. The buffer tank is also perfect for cooling.