A centrifugal pump with impellers that have magnetic hubs to provide speed and positional control. Sealless pump should be installed so it has a ans. suction head.


Related Terms

POHLE AIR LIFT PUMP

A pistonless pump in which compressed air fills the annular space surrounding the uptake pipe and is free to enter the rising column at all points of its pressure but sometimes welded or bonded.

PISTON PUMP

A pump in which motion and pressure are applied to the fluid by a reciprocating piston in a cylinder. Also known as reciprocating pump.

OIL PUMP

[MECHENG] A pump of the gear,vane, or plunger type, usually an integral part of the automotive engine; it lifts oil from the sump to the upper level in the splash and circulating systems, and in forced-feed lubrication it pumps the oil to the tubes leading to the bearings and other parts.

NONFLOWING WELL

A well that yields water at the land surface only by means of a pump or other lifting device.

MOLECULAR PUMP

A vacuum pump in which the molecules of the gas to be exhausted are carried away by the friction between them and a rapidly revolving disk or drum.

MOLECULAR DRAG PUMP

A vacuum pump in which pumping is accomplished by imparting a high momentum to the gas molecules by impingement of a body rotating at very high speeds, as mucha s 16,000 revolutions perminute;such pumps achieve a vacuum as high as 10^-6 torr.

MIXED-FLOW IMPELLER

An impeller for a pump or compressor which combines radialand axial-flow principles.

MECHANICAL PUMP

A pump through which fluid is conveyed by direct contact with a moving part of the pumping machinery.

LOW-LEVEL CONDENSER

A direct-contact water-cooled steam condenser that uses a pump to remove liquid from a vacuum space.

LIFT PUMP

A pump for lifting fluid to the pump's own level.

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