2SK liquid ring vacuum pump is adaptable for pumping air and other non-corrosive gases that are insoluble in water and without solid to acquire high vacuum in a sealed vessel. And the 2SK series is suitable for working conditions where the suction pressure is lower than -0.08MPa. This machine is mainly used in vacuum evaporation, vacuum impregnation, vacuum concentration and so on in the fields of food, textile, metallurgy, chemical, electronic, pharmaceutical and so on.