Editing Vacuum ejector (section)

=== Air ejector ===
Commonly called an '''air ejector''', '''Venturi pump''', or '''vacuum ejector'''. This ejector is similar in operation to the steam ejector but uses high-pressure air as the working fluid. Multistage air ejectors can be used, but since air cannot easily be condensed at room temperature, an air ejector is usually limited to two stages as each subsequent stage would have to be significantly larger than the last. These are commonly used in pneumatic handling equipment when a small vacuum is required to pick up objects since compressed air is often already present to power other parts of the equipment. Air ejectors used to suction liquids directly will produce a fine mist of droplets, this is how [[airbrush]]es and many other spraying systems operate, but when a spray is not required it is typically an undesirable effect that limits the applications to gas suction.

[[File:Ejector or Injector.svg|center|thumb|608x608px|The basic elements of an ejector]]