Reverse Air Collectors Mikropul reverse air collectors are very effective for various applications involving extremely fine dust where low outlet emissions are required. Bags are cleaned by reversing the airflow and blowing air back through the fabric. The simple cleaning design involves few moving parts resulting in low maintenance, low operating costs, and extended bag life. Construction Features 203, 292, or 305 mm (8, 11.5, or 12 in.) dia. bags Positive or negative pressure Multiple modular or compartment design Temperatures from ambient to 288°C (550°F) Pyramid or trough hopper "Soft" reverse air reinflation Low pressure drop Minimal maintenance Typical Applications Electric arc furnaces Cement kiln BOF / Qbop Submerged arc furnaces Carbon Black Boilers