Pumping Systems

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Three types of pump systems: positive displacement, momentum transfer, and entrapment.

Positive Displacement Pumps

Positive displacement: Uses a mechanism to repeatedly expand a cavity, allow gases to flow in from the chamber, seal off the cavity, and exhaust it to the atmosphere.

Rotary vane pump.png

Diaphragm pump.png

Momentum Transfer Pumps

Momentum transfer: Uses high speed jets of dense fluid or high speed rotating blades to knock gas molecules out of the chamber.

Turbo pump.png

Entrapment Pumps

Capture gases in a solid or adsorbed state.

Sorption pump.png

Useful Links:

Rotary Vane Pump

Diaphragm Pump

Turbomolecular Pump

Sorption Pump