Ball Valve Definition

noun
A valve regulated by the position of a free-floating ball that moves in response to fluid or mechanical pressure.
American Heritage
A valve that works by the action of a ball resting on the outlet hole: use of external pressure raises the ball and opens the hole; when the pressure is removed, the ball drops and closes the hole.
Webster's New World

Other Word Forms of Ball Valve

Noun

Singular:
ball valve
Plural:
ball valves

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ball valve