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2. Vacuum ejector - Wikipedia

   en.wikipedia.org/wiki/Vacuum_Ejector

   A vacuum ejector, or simply ejector, or aspirator, is a type of vacuum pump, which produces vacuum by means of the Venturi effect.. In an ejector, a working fluid (liquid or gaseous) flows through a jet nozzle into a tube that first narrows and then expands in cross-sectional area.

3. Liquid-ring pump - Wikipedia

   en.wikipedia.org/wiki/Liquid-ring_pump

   Single-stage vacuum pumps typically produce vacuum to 35 torr (mm Hg) or 47 millibars (4.7 kPa), and two-stage pumps can produce vacuum to 25 torr, assuming air is being pumped and the ring-liquid is water at 15 °C (59 °F) or less. Dry air and 15 °C sealant-water temperature is the standard performance basis, which most manufacturers use for ...

4. Aspirator (medicine) - Wikipedia

   en.wikipedia.org/wiki/Aspirator_(medicine)

   They can be used during surgical procedures but an operating theater is generally equipped with a central system of vacuum tubes. [1] Most aspirators are therefore portable, for use in ambulances and nursing homes, and can run on AC or battery power. They consist of a vacuum pump, a vacuum regulator and gauge, a collection canister, and ...

5. Edwards' IPUP2 Vacuum Pump Sets New Standards for Load ... - AOL

   www.aol.com/news/2013-07-09-edwards-ipup2-vacuum...

   The pumping speed and power curve of the IPUP2 have been optimised to increase tool throughput, achieving a peak pumping speed (180 m 3 /h) 89 percent faster and pump down times up to 54 percent ...

6. Vacuum pump - Wikipedia

   en.wikipedia.org/wiki/Vacuum_pump

   The Roots blower is one example of a vacuum pump. A vacuum pump is a type of pump device that draws gas particles from a sealed volume in order to leave behind a partial vacuum. The first vacuum pump was invented in 1650 by Otto von Guericke, and was preceded by the suction pump, which dates to antiquity. [1]

7. Turbomolecular pump - Wikipedia

   en.wikipedia.org/wiki/Turbomolecular_pump

   A turbomolecular pump is a type of vacuum pump, superficially similar to a turbopump, used to obtain and maintain high vacuum. [ 1 ] [ 2 ] These pumps work on the principle that gas molecules can be given momentum in a desired direction by repeated collision with a moving solid surface.