Models 9-19 No. 8D and 6-12 No. 10.5D sealing fans are high pressure centrifugal fans, when matching with models ZQM-216 and MPS coal mill, the fans serve for sealing coal-dust with high pressure air. The gas temperature is less than 80 °C and the dust density is less than 150mg/m³.
The works is also able to design and produce series 9-19 and 6-12 sealing fans with other impeller diameters so as to satisfy customers requirements.