... recycled oil quality 4.Vacuum distillation equipment for used oil This DIR-VIII vacuum distillation machine was installed in Indonesia ... three stages cooling, they’re separately stored in water, gasoline/diesel, light lube oil, heavy lube oil ... system;3,Distillation system:distillation tower,distillation kettle,circulation pump,heat exchanger;4,Cooling system:water pump,cooling water reservoir,first ...