This series of centrifugal fan can achieve pressures increases up to 25. 000 Pa and flows up to 30 cm / s. Those fans are available direct, belt or flexible coupling driven. They are used for the extraction or injection of clean or dusty air. This series is characterized by high efficiency at low running cost. The fans are particularly suitable for conditioning and drying systems and are well employed in founderies, furnaces, glassworks, chemical industri etc.