The 2X series rotary vane vacuum pump is one of the basic equipment for gas extraction. It can be used alone or as a backing pump for ultra-high pumps such as booster pumps, diffusion pumps, and molecular pumps. It can be used for vacuum coating, vacuum heat treatment, Vacuum casting, exhaust of electronic tubes, light bulbs, thermos bottles, etc., and used in electronic device manufacturing, vacuum drying, filtration, coating, welding, metal smelting, etc. The 2X series rotary vane vacuum pump is not suitable for pumping gases that contain too much oxygen, are harmful, explosive, corrosive to metals, chemically react with vacuum oil, and contain particulate dust, nor can they be used to pump gases from one container to another. When the container is used as a delivery pump and is equipped with an aeration valve, it can pump an appropriate amount of condensable gas.