... transformers.Besides, it can also be used for vacuumization in vacuum metallurgy, welding, chemistry, pharmacy, coating and electronic industries... ... SpeedL/S701503006001200Pumping Level 2Connection Diametermm5080 SizeLengthmm12001300140016001750Widthmm9501000110012001300Heightmm15001600170019002100WeightKg30040050012501560 With Waterproof & Dustproof Vacuum Insulation Oil Recycle Machine