valve

IPA: vˈæɫv

A device that controls the flow of a gas or fluid through a pipe.
A device that admits fuel and air into the cylinder of an internal combustion engine, or one that allows combustion gases to exit.
(anatomy) One or more membranous partitions, flaps, or folds, which permit the passage of the contents of a vessel or cavity in one direction, but stop or control the flow in the opposite direction
One of the leaves of a folding-door, or a window-sash.
(Britain) A vacuum tube.
(botany) One of the pieces into which certain fruits naturally separate when they dehisce.
(botany) A small portion of certain anthers, which opens like a trapdoor to allow the pollen to escape, such as in the barberry.
(biology) One of the pieces or divisions of bivalve or multivalve shells.
(biology) One of the two similar portions of the shell of a diatom.

Examples of "valve" in Sentences

I closed the valve.
Then the propellant valves in the engine itself are opened.
The piston is moved to open the pilot valve by inhalation suction.
Engagement of the valve on the shoulder causes opening of the valve.
The drawback is that the engine has to work harder to open the valve.
The output of the selection circuit determines the opening of the valve.
The chamber communicates the orifices with each other when the valve is open.
An outlet of the shuttle valve is connected to the closing chamber of the BOP.
The relief valve is timed to open upon the closing of the fuel injection valve.
A vehicle speed of responsive device controls the opening and closing of the valve.