Utilized the domestic and foreign technique and innovatively designed,the filter has aga good ratio of price performance.With the adbantages of high working vacuum, high filtration speed, oil quality protection,the filter advanced the oil treatment technique and equipment performance and once can taise the puncture voltage up to over 35v.The series products can be installed by sealed regular or moveable with a trailer,so it is suitable to treat oil,fill oil in vacuum chamber and circulating dry hot oil when latfe transfotmer is being installed overhauled.Moreover,we can also provide customers with three-stage high-vacuum oil-filter so as to get higher vacuum and to meet your higher requirment gor oil treatment. This series have one pot with two stage vacuum segregating space,it come into being different pressure so as to keep oil line balance between two stages. The pump of thie product is adopted vacuum imported from Europe,which have preceding level in the world,and with high air pump speed so as to get high working cacuity. Features of product 1.This series have one pot with two-stage vacuum-segregating space, it come into being different pressure so as to keep oil line balance between two stages. 2. The pump of this product is adopted vacuum-pump imported from Europe, which have preceding level in the world, and with high air pump speed so as to get high working vacuity. 3.As the new technology, vacuum-segregating (Patent No. ZL200420061085.6) employs particular spinning disk and stainless steel machine with dehydration and air pump so that enlarge the area of segregating and coming to three-dimensional evaporation.