Centrifugal or kinetic pumps: they have
uniform and adjustable flow velocity,
thanks to a rotating impeller.
With radial
or axial
flow
Paper and petroleum
industry. Chemicals.
High temperature
and marine applications
Pumps and compressors
Positive displacement pumps: force
liquid to flow in proportion to
decreasing pump volume.
Hydraulic systems,
for instance
With pistons ,
plungers or
diaphragms.
They can be
reciprocating
or
rotary
With gears,
screws or
vanes
They are machines for compressing
air. They are used in
pneumatic machines as motors
Road drills, paint
sprayers and dentists’
drills.
(From under 2 to over 8 absolute atmosheres)
According ton the air pressure generated,
there are low pressure, medium pressure,
high pressure and very high pressure
compressors