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a British trade name for a thin-walled metal tubing or bellows with a corrugated side surface. Sylphons are made of brass (usually low brass), phosphor bronze, beryllium bronze, and stainless steel. They are most widely used in pneumatic and hydraulic automatic control systems as sensing elements. Such elements react to a change in the pressure of a gas or liquid acting upon the bottom of the Sylphon by expanding or contracting like a spring. Examples of such devices are temperature sensors and pressure sensors. Sylphons are also used as flexible connectors in pipes, as compensators for thermal expansion, and as elastic separators of media. For operation at great pressure differences or in corrosive media, the walls of Sylphons are manufactured in two, three, or four layers.
REFERENCESPerspeklivy razvitiia uprugikh chuvstvitel’nykh elementov: Sb. st. Moscow, 1961.
Fudim, E. V. Pnevmaticheskaia vychislitel’naia tekhnika. Moscow, 1973.