Application Double stages transformer oil purifier is applied to treat various of unqualified insulation oils including aging transformer oil specially for the power which is above 110v, mutual inductor oil, switch oil and so on. Also it can inject the insulating oil into the transformers on-line. Features 1. High vacuum: high point-vacuumín5pa; working-vacuumín35pa 2. High absorption speed: absorption speed powerí²333l/sr. 3. Duplex 3d stereo-evaporation, eliminating the liquid water quickly 4. Uk g technology by which the trace water that is show chain, such as dissolved water, can be removed effectively. 5. Distinctive removing impurities system filtering through double fh trapezoidal network and absorbing by high polymer without the mechanical power 6.Carbon fiber infrared heating system that can make the oil contain zero sum of ethyne after the treatment. Advantages Comparing with the single-stage vacuum oil purifier, this machine can dewater, degas and removes the impurities more quickly, more completely, and makes the oil bdv (breakdown voltage) of 70kv or higher. As the bridge-type vacuum linking system that can purify and also can be an independent vacuum power supply, this machine can treat the electric insulation devices. Oil purifier, oil filter, oil filtration, oil purification, oil recycling, oil treatment, oil regeneration, oil restoration, oil filtering, waste oil disposal, oil reclaiming, waste oil management, energy saving, oil reconditioned, oil reconstituted, oil restituting, oil recovering, oil separator, oil refinery