Definition of Valve. Meaning of Valve. Synonyms of Valve

Here you will find one or more explanations in English for the word Valve. Also in the bottom left of the page several parts of wikipedia pages related to the word Valve and, of course, Valve synonyms and on the right images related to the word Valve.

Definition of Valve

Valve
Valve Valve, n. [L. valva the leaf, fold, or valve of a door: cf. F. valve.] 1. A door; especially, one of a pair of folding doors, or one of the leaves of such a door. Swift through the valves the visionary fair Repassed. --Pope. Heavily closed, . . . the valves of the barn doors. --Longfellow. 2. 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. Note: A valve may act automatically so as to be opened by the effort of a fluid to pass in one direction, and closed by the effort to pass in the other direction, as a clack valve; or it may be opened or closed by hand or by mechanism, as a screw valve, or a slide valve. 3. (Anat.) 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. 4. (Bot.) (a) One of the pieces into which a capsule naturally separates when it bursts. (b) One of the two similar portions of the shell of a diatom. (c) A small portion of certain anthers, which opens like a trapdoor to allow the pollen to escape, as in the barberry. 5. (Zo["o]l.) One of the pieces or divisions of bivalve or multivalve shells. Air valve, Ball valve, Check valve, etc. See under Air. Ball, Check, etc. Double-beat valve, a kind of balance valve usually consisting of a movable, open-ended, turban-shaped shell provided with two faces of nearly equal diameters, one above another, which rest upon two corresponding seats when the valve is closed. Equilibrium valve. (a) A balance valve. See under Balance. (b) A valve for permitting air, steam, water, etc., to pass into or out of a chamber so as to establish or maintain equal pressure within and without. Valve chest (Mach.), a chamber in which a valve works; especially (Steam Engine), the steam chest; -- called in England valve box, and valve casing. See Steam chest, under Steam. Valve face (Mach.), that part of the surface of a valve which comes in contact with the valve seat. Valve gear, or Valve motion (Steam Engine), the system of parts by which motion is given to the valve or valves for the distribution of steam in the cylinder. For an illustration of one form of valve gear, see Link motion. Valve seat. (Mach.) (a) The fixed surface on which a valve rests or against which it presses. (b) A part or piece on which such a surface is formed. Valve stem (Mach.), a rod attached to a valve, for moving it. Valve yoke (Mach.), a strap embracing a slide valve and connecting it to the valve stem.

Meaning of Valve from wikipedia

- 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...
- Valve Corporation is an American video game developer, publisher, and digital distribution company headquartered in Bellevue, Washington. It is the developer...
- A vacuum tube, electron tube, valve (British usage), or tube (North America), is a device that controls electric current flow in a high vacuum between...
- The Schrader valve (also called American valve) is a type of pneumatic tire valve used on virtually every motor vehicle in the world today. The Schrader...
- The pulmonary valve (sometimes referred to as the pulmonic valve) is a valve of the heart that lies between the right ventricle and the pulmonary artery...
- A check valve, non-return valve, reflux valve, retention valve, foot valve, or one-way valve is a valve that normally allows fluid (liquid or gas) to...
- A solenoid valve is an electromechanically operated valve. Solenoid valves differ in the characteristics of the electric current they use, the strength...
- automotive engineering a multi-valve or multivalve engine is one where each cylinder has more than two valves. A multi-valve engine has better breathing...
- heart valves closing in a healthy 16 year old girl. The stethoscope is at the tricuspid area. Problems playing this file? See media help. A heart valve is...
- distribution service and storefront by Valve. It was launched as a software client in September 2003 as a way for Valve to provide automatic updates for their...