They can be used for fast coarse dosing both the large and small screw run. When approaching the required weight the large screw stops. The outlet valve is closed. The fine dosing screw then accurately fills the bag until the scales show that the bag has reached exactly the required weight. The fine dosing outlet valve is then also closed.
Being a manufacturer in the field of bag filling installations, in particular for the feed and food industry, Behn + Bates requires a high level of finish for the dosing screws. All moving parts in the fine dosing system coming into contact with the product, including welds in contact with the product, have an Ra value of < 0.8 µm.