Definitions for valvevælv
Random House Webster's College Dictionary
valvevælv(n.; v.)valved, valv•ing.
(n.)any device for halting or controlling the flow of something, as a liquid, through a pipe or other passage.
a hinged lid or other movable part that closes or modifies the passage in such a device.
a membranous structure that permits the flow of a fluid, as blood, in one direction only.
(in brass instruments) a device for changing the length of the air column to alter the pitch of a tone.
Category: Music and Dance
one of the two or more separable pieces composing certain shells:
the valves of a clamshell.
Bot. one of the segments into which a fruit capsule dehisces. a flap or lidlike part of certain anthers.
Ref: vacuum tube . 1
Archaic. one of the leaves of a double or folding door.
(v.t.)to provide with a valve.
Origin of valve:
1350–1400; ME < L valvae leaves of a door
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
the entire one-piece shell of a snail and certain other molluscs
one of the paired hinged shells of certain molluscs and of brachiopods
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.
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.
A vacuum tube.
One of the pieces into which certain fruits naturally separate when they dehisce.
A small portion of certain anthers, which opens like a trapdoor to allow the pollen to escape, as in the barberry.
One of the pieces or divisions of bivalve or multivalve shells.
One of the two similar portions of the shell of a diatom.
To control (flow) by means of a valve.
Origin: From valva
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 two similar portions of the shell of a diatom
a small portion of certain anthers, which opens like a trapdoor to allow the pollen to escape, as in the barberry
one of the pieces or divisions of bivalve or multivalve shells
A valve is a device that regulates, directs or controls the flow of a fluid by opening, closing, or partially obstructing various passageways. Valves are technically valves fittings, but are usually discussed as a separate category. In an open valve, fluid flows in a direction from higher pressure to lower pressure. The simplest, and very ancient, valve is simply a freely hinged flap which drops to obstruct fluid flow in one direction, but is pushed open by flow in the opposite direction. This is called a check valve, as it prevents or "checks" the flow in one direction. Valves have many uses, including controlling water for Irrigation, industrial uses for controlling processes, residential uses such as on / off & pressure control to dish and clothes washers & taps in the home. Even aerosols have a tiny valve built in. Valves are also used in the military & transport sectors. Valves are found in virtually every industrial process, including water & sewage processing, mining, power generation, processing of oil, gas & petroleum, food manufacturing, chemical & plastic manufacturing and many other fields. People in developed nations use valves in their daily lives, including plumbing valves, such as taps for tap water, gas control valves on cookers, small valves fitted to washing machines and dishwashers, safety devices fitted to hot water systems, and poppet valves in car engines.
Translations for valve
Kernerman English Multilingual Dictionary
a device for allowing a liquid or gas to pass through an opening in one direction only.
- válvulaPortuguese (BR)
- das VentilGerman
- valve, soupapeFrench
- वाल्व एक`ओर खुलने वाला वायु गैस द्रव के संचार का यंत्रHindi
- loki, ventillIcelandic
- vārsts; ventilisLatvian
- ventil, klaffNorwegian
- valvă, supapăRomanian
- valf, vanaTurkish
- 閥Chinese (Trad.)
- клапан, вентильUkrainian
- والو، گيس يا رقيق مادے کو گزارنے والا آلہUrdu
- 阀Chinese (Simp.)
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