Used for the safe transport of high quantities of granular, dusty, friable and delicate products. The material is introduced through the loading hopper and then dragged inside the tubes by means of chains equipped with curved discs in plastic material that guarantee a precise and constant flow of the product. The diameter of the discs varies according to the product and the customer’s needs. The discharge hoppers, made of stainless steel, are equipped with damper valves that regulate the amount of material falling.