The Kontinuer Rotary Drums are designed to filter fat with high solids content, also known as sludge, from the pressing system and percolator. The feeding can be done using a pump or screw conveyors. The sludge is transported by a drum with a perforated basket, which pre-separates fats and solids by a rotational movement. The solid part returns to the pressing system in a closed circuit, whereas the fat is pumped to a deposit. The Rotary Drums features steam valves that clean the basket, thus maintaining the drainage area always unobstructed for better separation.