Mining Ventilation Fan for Coal/Gold Mines Primary Ventilation APPLICATIONS The main fan is used for ventilation of a certain mine or a wing of a mine, also called a main fan. GENERAL SPECIFICATIONS The new generation of M series mine energy-saving fan is equipped with a steady flow ring device. Its improvement: The characteristic curve without hump, more efficient, better performance, more specifications, to adapt to a wider range of large medium and small types of non-coal mines, it can also be used as the applicable main fan, auxiliary fan, fan and all levels of machine fan. At the same time, there is a steady flow ring device in the body of main fan. And the characteristic curve has no hump which can ensure that the fan can run stably under any resistance status. These mines axial fans are produced for customers special requests.If the customer has other requirementsfor pressure and air volume what is not included in the following list, please contact our technicians to design and select the appropriate tunnel fan.