Faucet vs. Valve — What's the Difference?

A device for regulating the flow of a liquid from a reservoir such as a pipe or drum. See Note at andiron.

A valve is a device or natural object that regulates, directs or controls the flow of a fluid (gases, liquids, fluidized solids, or slurries) by opening, closing, or partially obstructing various passageways. Valves are technically fittings, but are usually discussed as a separate category.

(North America) An exposed plumbing fitting; a tap or spigot; a regulator for controlling the flow of a liquid from a reservoir.

A device for controlling the passage of fluid or air through a pipe, duct, etc., especially an automatic device allowing movement in one direction only

(game development) One or several systems that inject currency into the game's economy, thus controlling or preventing inflation

Each of the halves of the hinged shell of a bivalve mollusc or brachiopod, or of the parts of the compound shell of a barnacle.

A fixture for drawing a liquid, as water, molasses, oil, etc., from a pipe, cask, or other vessel, in such quantities as may be desired; - called also tap, and cock. It consists of a tubular spout, stopped with a movable plug, spigot, valve, or slide.

Any of various devices that regulate the flow of gases, liquids, or loose materials through piping or through apertures by opening, closing, or obstructing ports or passageways.

The enlarged end of a section of pipe which receives the spigot end of the next section.

The movable control element of such a device.

A regulator for controlling the flow of a liquid from a reservoir

A device in a brass wind instrument that can be opened or closed to change the pitch by altering the length of the air column in the tube.

(Anatomy) A membranous structure in a hollow organ or passage, as in an artery or vein, that folds or closes to prevent the return flow of the body fluid passing through it.

A piece of shell covering or enclosing certain mollusks or other invertebrates, especially the single one of a univalve mollusk or one of the paired hinged ones of a bivalve mollusk or brachiopod.

One of the two siliceous halves of the cell wall of a diatom.

One of the pieces into which a plant part splits at maturity, especially a segment of a fruit capsule or of certain anthers.

Chiefly British An electron tube or a vacuum tube.

(Archaic) Either half of a double or folding door.

To provide with a valve.

To control by means of a valve.

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.

(British) 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.

(transitive) To control (flow) by means of a valve.

A door; especially, one of a pair of folding doors, or one of the leaves of such a door.

A lid, plug, or cover, applied to an aperture so that by its movement, as by swinging, lifting and falling, sliding, turning, or the like, it will open or close the aperture to permit or prevent passage, as of a fluid.

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 retard the flow in the opposite direction; as, the ileocolic, mitral, and semilunar valves.

One of the pieces into which a capsule naturally separates when it bursts.

One of the pieces or divisions of bivalve or multivalve shells.

A structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it

Device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone

Control consisting of a mechanical device for controlling the flow of a fluid