Pump
A pump is a machine which moves a liquid from one place to another, often upwards.
A hand-pump
Pumps need some kind of power, often kinetic energy, to make them work. Sometimes the power comes from a person. Sometimes the power comes from a motor.
Types of pumps
There are many different kinds of pumps. Some types of pumps are:
Drawing of the inside of a metering pump head to show how it works. The piston moves back and forth inside the pump head.
Related pages
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