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Vacuum pump
A
vacuum pump
is a mechanical
compressor
that operates at less than
atmospheric pressure
. A
vacuum
pump can be a positive displacement pump that transports a gas load from an inlet port to and outlet, or exahust, port. Vacuum
pumps
can also work on a
momentum transfer[?]
principle,
cryogenic entrapment[?]
principles as well as the
positive displacement[?]
principal.
Types of Vacuum Pumps
Transfer
roots blower[?]
rotary compression[?]
Diffusion pump
turbomolecular pump
entrapment pump[?]
ion pump
cryopump
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