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2X series vacuum pumps take a double stage structre, which working performance iscomposed of high pressure stage and low pressure stage. Its suction nozzle is connectedto vacuum container or vacuum equipment to suck in and dischargeyjr gasin container in the process of operation.When the equipment is vacuumized, high pressure stage exhaust disc will be closed,and the gas sucked by high pressure stage will be transferred to the second stage,and then sucked in and discharged out by the second stage. Here the vacuumequipment will be vaccumized to a certain extennt.