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2. Edwards Vacuum - Wikipedia

   en.wikipedia.org/wiki/Edwards_Vacuum

   Edwards two stage rotary vane vacuum pump. History. Independent (1919-1967) In 1919, physicist and university lecturer Frederick David Edwards and his father William ...

3. Vacuum pump - Wikipedia

   en.wikipedia.org/wiki/Vacuum_pump

   A vacuum pump is a type of pump device that draws ... Examples of such pumps are Edwards EPX [19 ... Some examples might be use of an oil sealed rotary vane pump (the ...

4. Rotary vane pump - Wikipedia

   en.wikipedia.org/wiki/Rotary_vane_pump

   An eccentric rotary vane pump Another eccentric rotary-vane pump design. Note that modern pumps have an area contact between rotor and stator (and not a line contact). 1. pump housing 2. rotor 3. vanes 4. spring. A rotary vane pump is a type of positive-displacement pump that consists of vanes mounted to a rotor that rotates inside a cavity. In ...

5. Edwards' Dry Pump Technology Improves Energy Efficiency and ...

   www.aol.com/news/2013-05-29-edwards-dry-pump...

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6. Turbomolecular pump - Wikipedia

   en.wikipedia.org/wiki/Turbomolecular_pump

   The system is an axial compressor that puts energy into the gas, rather than a turbine, which takes energy out of a moving fluid to create rotary power, thus "turbomolecular pump" is a misnomer. Gas captured by the upper stages is pushed into the lower stages and successively compressed to the level of the fore-vacuum (backing pump) pressure.

7. Vacuum sewer - Wikipedia

   en.wikipedia.org/wiki/Vacuum_sewer

   Vacuum technology is based on differential air pressure. Rotary vane vacuum pumps generate an operation pressure of -0.4 to -0.6 bar at the vacuum station, which is also the only element of the vacuum sewerage system that must be supplied with electricity. Interface valves are installed inside the collection chambers. They work pneumatically.