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| but·ter·fly valve (plural but·ter·fly valves) |
noun |
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| Definition: |
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1. valve in pipe: a valve consisting of a disk that turns inside a pipe, especially one used as a throttle valve in a carburetor
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2. one-way valve: a valve consisting of two semicircular plates that are hinged around a central spindle, used to allow flow in one direction only
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| [< its shape] |
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