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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
Robert Wilder — Infobox Person name = Robert Wilder image size = 200px caption = birth date = 1960 birth place = Baltimore, Maryland death date = death place = education = Doctorate occupation = Fund Manager, Academic spouse = Diana (Francis) Wilder parents =… … Wikipedia

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