Mill fans are available in right and left rotation. With right rotation, the impeller rotates clockwise when looking at the wheel from the side of the electric motor, with left rotation counterclockwise. The VM fan volute is made with an angle of rotation from 0 ° to 270 ° every 15 °, while the rib of the volute that interferes with the installation is trimmed.
Mill fans type VM are designed to move air and non-explosive non-aggressive dust-gas-air mixtures with a temperature of -30 ° C to + 200 ° C, dust content up to 80 g / m³. The abrasiveness of the dust contained in the transported medium and its tendency to adhere should not exceed that of coal dust. Mill fans are used in stationary boilers dust preparation systems, in technological lines for the production of ferrous and non-ferrous metals, etc.