Model caliber motor power frequency ventilation fan in the amount of wind speed (m3 | min) (mm) (kw) (HZ) (r | min) 0.1kgf | m2 0.12kgf | m2 0.3kgf | m2 0.4kgf | m2 KQ-50S 40 1.5 50 430 1.14 1.14 1.09 1.06 KQ-501S 40 2.2 50 500 1.44 1.44 1.39 1.36 rotary fan features: 1, small size, air volume, low noise, low energy consumption 2, smooth operation, easy installation 3, anti-load ability, 4 steady wind, with the air chamber, bulk gas smooth rotary blower main purposes: 1, water aeration, 2, 3 hospital sewage aeration, vacuum feeder 4 printing industry, domestic sewage, industrial wastewater aeration agitation 5 Aquaculture 6 burner spray, glass industry