double butterfly valve

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• Butterfly valve — Butterfly But ter*fly , n.; pl. {Butterflies}. [Perh. from the color of a yellow species. AS. buter fl[=e]ge, buttor fle[ o]ge; cf. G. butterfliege, D. botervlieg. See {Butter}, and {Fly}.] (Zo[ o]l.) A general name for the numerous species of… …   The Collaborative International Dictionary of English

• Butterfly valve — A butterfly valve is a type of flow control device, typically used to regulate a fluid flowing through a section of pipe. The valve is similar in operation to a ball valve. A flat circular plate is positioned in the center of the pipe. The plate… …   Wikipedia

• butterfly valve — /ˈbʌtəflaɪ vælv/ (say butuhfluy valv) noun 1. a double clackvalve (as in a lift pump piston) which consists of two semicircular clappers hinged to a cross rib. 2. a damper or throttle valve in a pipe which consists of a disc turning on a… …  

• Butterfly — But ter*fly , n.; pl. {Butterflies}. [Perh. from the color of a yellow species. AS. buter fl[=e]ge, buttor fle[ o]ge; cf. G. butterfliege, D. botervlieg. See {Butter}, and {Fly}.] (Zo[ o]l.) A general name for the numerous species of diurnal… …   The Collaborative International Dictionary of English

• Butterfly fish — Butterfly But ter*fly , n.; pl. {Butterflies}. [Perh. from the color of a yellow species. AS. buter fl[=e]ge, buttor fle[ o]ge; cf. G. butterfliege, D. botervlieg. See {Butter}, and {Fly}.] (Zo[ o]l.) A general name for the numerous species of… …   The Collaborative International Dictionary of English

• Butterfly shell — Butterfly But ter*fly , n.; pl. {Butterflies}. [Perh. from the color of a yellow species. AS. buter fl[=e]ge, buttor fle[ o]ge; cf. G. butterfliege, D. botervlieg. See {Butter}, and {Fly}.] (Zo[ o]l.) A general name for the numerous species of… …   The Collaborative International Dictionary of English

• 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 — 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

• Asclepias butterfly — Butterfly But ter*fly , n.; pl. {Butterflies}. [Perh. from the color of a yellow species. AS. buter fl[=e]ge, buttor fle[ o]ge; cf. G. butterfliege, D. botervlieg. See {Butter}, and {Fly}.] (Zo[ o]l.) A general name for the numerous species of… …   The Collaborative International Dictionary of English

• Continuous variable valve timing — offers a unique ability to have independent control of the intake and exhaust valves in an internal combustion engine. For any engine load criteria, the timing of intake and exhaust can be independently programmed [1]. The main variations of… …   Wikipedia

• Blennius ocellaris — Butterfly But ter*fly , n.; pl. {Butterflies}. [Perh. from the color of a yellow species. AS. buter fl[=e]ge, buttor fle[ o]ge; cf. G. butterfliege, D. botervlieg. See {Butter}, and {Fly}.] (Zo[ o]l.) A general name for the numerous species of… …   The Collaborative International Dictionary of English