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disk valve

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  • disk valve — noun : a valve opened or closed by a disk; often : a suction valve operated by a flexible disk (as of rubber or leather) …   Useful english dictionary

  • tilting-disk valve — a type of prosthetic heart valve consisting of a sewing ring and a valve housing containing a suspended disk that swings between closed and open positions …   Medical dictionary

  • valve — valveless, adj. valvelike, adj. /valv/, n., v., valved, valving. n. 1. any device for halting or controlling the flow of a liquid, gas, or other material through a passage, pipe, inlet, outlet, etc. 2. a hinged lid or other movable part that… …   Universalium

  • Valve — This article is about the flow control device. For the game developer, see Valve Corporation. For the electronic component, see Vacuum tube. For other uses, see Valve (disambiguation). These water valves are operated by handles. A valve is a… …   Wikipedia

  • Valve RF amplifier — A valve RF amplifier (UK and Aus.) or tube amplifier (U.S.), is a device for electrically amplifying the power of an electrical , typically (but not exclusively) radio frequency signals.Low to medium power valve amplifiers for frequencies below… …   Wikipedia

  • Valve transmitters — Most high power transmitter amplifiers are of valve construction because of the high power required.Anode circuitsSince valves are designed to operate with much higher resistive loads than solid state devices, the most common anode circuit is a… …   Wikipedia

  • valve — 1. A fold of the lining membrane of a canal or other hollow organ serving to retard or prevent a reflux of fluid. 2. Any formation or reduplication of tissue, or flaplike structure …   Medical dictionary

  • disk — n. [L. discus, circular plate] 1. Any flattened part in the form of a disc. 2. Circumoral area of many animals. 3. (ARTHROPODA: Insecta) In Coleoptera, the general dorsal surface of the elytra, usually marked by longitudinal striae corresponding… …   Dictionary of invertebrate zoology

  • Artificial heart valve — An artificial heart valve is a device implanted in the heart of a patient with heart valvular disease. When one of the four heart valves malfunctions, the medical choice may be to replace the natural valve with an artificial valve. This requires… …   Wikipedia

  • Medtronic-Hall valve — a type of tilting disk valve consisting of a titanium valve housing an S shaped disk guide strut, a Teflon cloth sewing ring, and a centrally perforated pyrolytic carbon–coated graphite disk that opens to an angle of 75 degrees. See… …   Medical dictionary

  • Lillehei-Kaster valve — a tilting disk valve consisting of a titanium valve housing, Teflon sewing ring, and flat, free floating, pivoting pyrolytic carbon disk that opens to 80 degrees …   Medical dictionary

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