page_title: Booster pump
section_title: Electrical
hierarchical_section_title: Booster pump / Power sources / Electrical
caption_attribution_description: English: Back view of Russian oxygen booster pump
context_page_description: A booster pump is a machine which will increase the pressure of a fluid. They may be used with liquids or gases, but the construction details will vary depending on the fluid.
  A gas booster is similar to a gas compressor, but generally a simpler mechanism which often has only a single stage of compression, and is used to increase pressure of a gas already above ambient pressure. Two-stage boosters are also made.
  Boosters may be used for increasing gas pressure, transferring high pressure gas, charging gas cylinders and scavenging.
context_section_description: Electrically powered boosters may use a single or three-phase AC motor drive. The high speed rotational output of the motor must be converted to lower speed reciprocating motion of the pistons. One way this has been done (Dräger and Russian KN-3  and KN-4 military boosters) is to connect the motor to a worm drive gearbox with an eccentric output shaft driving a connecting rod which drives the double-ended piston via a central trunnion. This system is well suited to a double acting booster, either with single-stage boost by parallel connected cylinders with the same bore, or two-stage cylinders of different bores connected in series. Some of these boosters allow for the connecting rod to be disconnected and a pair of long levers to be fitted for manual operation in emergencies or where electrical power is not available.
caption: Back view of Russian oxygen booster pump
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