The transformer oil is deeply purified through physical filtration, dehydration, degassing and regeneration treatment. In the physical filtration stage, filter elements of different precision are used to intercept solid impurities in the oil step by step, such as metal particles, dust, etc., to ensure the cleanliness of the oil. In Transformer Oil Dehydration process, vacuum heating technology is used to reduce the moisture content in the oil and prevent the deterioration of oil quality and insulation performance caused by moisture. The Transformer Oil Degassing process is to vacuum the oil by vacuum pump to remove the dissolved gases in the oil (especially the faulty characteristic gases such as hydrogen and methane) to prevent oil aging and electrical failure caused by the gas. For heavily polluted oil, Transformer Oil Purification Machine also equips with regeneration devices, which use adsorbents or chemical reactions to remove polar compounds in the oil and restore the original performance of the oil.