... gear oil, hydraulic oil freezer oil,hydraulic oil, compressor oil, vacuum pump oil, internal-combustion oil, heat treatment oil etc....-- quickly ... impurities because of being connected with an additional pressure sheet frame purifier.3) DYJ-T: used for purifying the oils ... gear oil, hydraulic oil, freezer oil, oil compressor oil, vacuum pump oil, internal-combustion oil and heat treatment oil and ...