valve (technology)

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In technology, a device that controls the flow of a fluid. Inside a valve, a plug moves to widen or close the opening through which the fluid passes.

Common valves include the cone or needle valve, globe valve, and butterfly valve, all named after the shape of the plug. Specialized valves include the one-way valve, which permits fluid flow in one direction only, and the safety valve, which cuts off flow under certain conditions.

Blue represents the sky and the sea. Yellow symbolizes the sun which gives light and life. Red reflects the people and their determination to work in the future in unity and love. White stands for justice and harmony. Green recalls the land and nature. Effective date: 8 January 1996. >>