The oil purifier can quickly remove moisture, gases, foreign articles and volatile matters (like alcohol, gasoline and ammonia, etc.) from oil, improve oil quality, recover viscosity, flash point and performance of turbine oil & hydraulic oil so as to ensure normal operation of hydraulic, power and lubricating systems. They are suitable especially for purifying and recovering treatment of hydraulic oil, machine oil, cooling oil and various lubricating oils in oil fields, mines and the fields of metallurgy, power, communications and manufacture, etc.
