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A valve is a device for controlling the passage of fluid or air through a pipe, duct, etc, by opening, closing, or partially obstructing various passageways. The simplest valves are one-way-flap mechanisms that allow flow in one direction and shut with back-flow pressure to stop flow in the direction of origin.
Valve's debut title, Half-Life, was released in 1998. It won more than 50 game of the year awards, and PC Gamer even called it the Best PC Game Ever. Since then, we've released dozens of titles that changed the world. Today, millions of people play our games every day.
Oct 10, 2007 · Co-operative multiplayer game and complete code base available for free. Valve's debut title, Half-Life, was released in 1998. Since then, we've released dozens of titles that changed the world (and one that didn't). Today, millions of people play our games every day.
The simplest, and very ancient, valve is simply a freely hinged flap which swings down to obstruct fluid (gas or liquid) flow in one direction, but is pushed up by the flow itself when the flow is moving in the opposite direction. This is called a check valve, as it prevents or "checks" the flow in one direction.
Valve is the main developer and publisher of the single-player Half-Life and Portal games and the multiplayer games Counter-Strike, Team Fortress 2, Dota 2, Day of Defeat, and Artifact. Valve also published the multiplayer game Left 4 Dead and developed and published Left 4 Dead 2.
Jun 17, 2024 · valve, in mechanical engineering, device for controlling the flow of fluids (liquids, gases, slurries) in a pipe or other enclosure. Control is by means of a movable element that opens, shuts, or partially obstructs an opening in a passageway.
See all examples of valve. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
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You turn the valve one way and the electricity stops through that molecule. From TIME Societies tend to have pressure valves, where they let one token minority member get a foot up to forget about the injustice to the rest.
