poppet seat

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• poppet — [päp′it] n. [var. of PUPPET] 1. TAILSTOCK 2. a valve that moves into and from its seat: often cam driven and spring loaded for a rapid repeating, popping action as in a gasoline engine: in full poppet valve 3. any of certain timbers used to… …   English World dictionary

• Poppet valve — A 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. In most… …   Wikipedia

• poppet — Puppet Pup pet, n. [OE. popet, OF. poupette; akin to F. poup[ e]e a doll, probably from L. puppa, pupa, a girl, doll, puppet. Cf. {Poupeton}, {Pupa}, {Pupil}, {Puppy}.] [Written also {poppet}.] 1. A small image in the human form; a doll. [1913… …   The Collaborative International Dictionary of English

• poppet — n. 1 Brit. colloq. (esp. as a term of endearment) a small or dainty person. 2 (in full poppet head) the head of a lathe. 3 a small square piece of wood fitted inside the gunwale or washstrake of a boat. Phrases and idioms: poppet head Brit. the… …   Useful english dictionary

• poppet valve — noun a mushroom shaped valve that rises perpendicularly from its seat; commonly used in internal combustion engines • Syn: ↑poppet • Hypernyms: ↑valve • Part Holonyms: ↑internal combustion engine, ↑ICE * * * noun …   Useful english dictionary

• poppet — /ˈpɒpət / (say popuht) noun 1. Also, poppet valve. a valve which in opening is lifted bodily from its seat instead of being hinged at one side. 2. Nautical a piece of shaped wood fitted to close up the slot cut in a boat s gunwale and top strake… …  

• poppet — noun Etymology: Middle English popet more at puppet Date: 15th century 1. a. Midland doll b. obsolete marionette 2. chiefly British dear 3 …   New Collegiate Dictionary

• valve seat — The area onto which the face of the poppet seats when closed. The two common angles for this seat are forty five and thirty degrees …   Dictionary of automotive terms

• 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

• gasoline engine — Most widely used form of internal combustion engine, found in most automobiles and many other vehicles. Gasoline engines vary significantly in size, weight per unit of power generated, and arrangement of components. The principal type is the… …   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