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What are the significant differences between an ejector and a vacuum pump?


Vacuum pumps (a) are vacuum generators driven by a motor, in which the vacuum is generated from suctioned ambient air either in accordance with the displacement principle (= rotary vane pumps) or the impulse principle (= side channel blowers).

Ejectors (b) are vacuum generators, without a motor, that generate the vacuum from compressed air using the Venturi principle.

The FIPA product range covers ejectors having air consumption from ~ 10 l/min up to a maximum of about 800 l/min as well as vacuum pumps from ~ 2 m3/h. up to ~ 310 m3/h.