Coalescence dehydration purifier of MFC series can be used for the purification of turbine oil and transformer. It also can be used for the hydraulic system oil purification which used in metallurgy, aviation, machinery and other industries. It can quickly remove the free water and emulsified water in the oil, decreased the water content of the oil from 1% to 0.01%. It can remove the solid particles in the tank by using the matching filter element.