Valve (disambiguation)
Encyclopedia
- A valveValveA 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 pipe fittings, but are usually discussed as a separate category...
is a device that regulates the flow of fluids. - Types of such valves include:
- Piston valvePiston valveA piston valve is a device used to control the motion of a fluid along a tube or pipe by means of the linear motion of a piston within a chamber or cylinder.Examples of piston valves are:...
, a part in many brass instruments, used to control notes. - Mercury arc valveMercury arc valveA mercury-arc valve is a type of electrical rectifier used for converting high-voltage or high-current alternating current into direct current . Rectifiers of this type were used to provide power for industrial motors, electric railways, streetcars, and electric locomotives, as well as for...
, a type of electrical rectifier which converts alternating current into direct current - Poppet valvePoppet valveA poppet valve is a valve consisting of a hole, usually round or oval, and a tapered plug, usually a disk shape on the end of a shaft also called a valve stem. The shaft guides the plug portion by sliding through a valve guide...
, a valve consisting of a hole and a tapered plug on the end of a shaft, typically used in instruments, engines, etc. - Heart valveHeart valveA heart valve normally allows blood flow in only one direction through the heart. The four valves commonly represented in a mammalian heart determine the pathway of blood flow through the heart...
, valves in the heart that maintain the unidirectional flow of blood - Vein valve, valves in veins and other fluid cords in body
- And see Valve#Types
- Piston valve
Valve may also refer to:
- Vacuum tubeVacuum tubeIn electronics, a vacuum tube, electron tube , or thermionic valve , reduced to simply "tube" or "valve" in everyday parlance, is a device that relies on the flow of electric current through a vacuum...
, also called "thermionic valve", an electronic component - Valve CorporationValve CorporationValve Corporation is an American video game development and digital distribution company based in Bellevue, Washington, United States...
, a computer software/games company responsible for the best-selling Half-Life games - Valve hallValve hallA valve hall is a building which contains the valves of the static inverters of a HVDC plant. The valves consist of thyristors, or at older plants, mercury arc rectifiers. Mercury arc rectifiers are usually supported by insulators mounted on the floor, while thyristor valves may be either...
, a building which contains the valves of the static inverters of an HVDC plant - Valve RecordsValve RecordsValve Records is an Australian record label, releasing a wide range of alternative artists both local and international. The label was created by Paul Curtis in 1994 to support the local bands he was managing...
, a record label - Valve, a paired clasping process on the male genitalia of a mothMothA moth is an insect closely related to the butterfly, both being of the order Lepidoptera. Moths form the majority of this order; there are thought to be 150,000 to 250,000 different species of moth , with thousands of species yet to be described...
- Valve (mollusc), One half of the shell of a bivalve mollusc, one of eight overlapping shells on a chitonChitonChitons are small to large, primitive marine molluscs in the class Polyplacophora.There are 900 to 1,000 extant species of chitons in the class, which was formerly known as Amphineura....