Ctesibian Pump (from Internet Glossary of Pumps)
Ctesibian Pump
The Ctesibian pump is over two thousand years old. Firefighters used Ctesibians for centuries. It is a type of force pump.

It is operated by two, four or six men -- sometimes more -- standing on either end of the "walking beam" to which the piston rods are attached.

The cylinders are made of copper or brass, the pistons often of wood. There are two valves for each cylinder and the base of the pump sits in the water source.

An air chamber below the nozzle acts as a hydraulic accumulator to maintain an even flow of water out the nozzle.

The water source might be suppied by a bucket brigade of people. The purpose of the pump is to create a stream of water for putting out the fire.

(This is a still representation and possibly also a low-resolution image of a pump which is fully animated in the CD-ROM version of this glossary.)

Go to web page describing Statistics Explained

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Last modified February, 2002
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