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Topic: Poppet valve

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	Poppet valve: Facts and details from Encyclopedia Topic (Site not responding. Last check: 2007-11-06)
		A valve is a mechanical device that regulates the flow of fluids (either gases, fluidised solids, slurries or liquids) by opening, closing, or partially...
		The valve is usually a flat disk of metal with a long rod known as the valve stem out one end.
		The sleeve valve is a type of valve for piston engines that has a number of advantages over the more common poppet valve, used in most engines, as well...
	www.absoluteastronomy.com /encyclopedia/p/po/poppet_valve.htm (1872 words)

	Articles - Poppet valve (Site not responding. Last check: 2007-11-06)
		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.
		Poppet valves are used in many industrial process from controlling the flow of rocket fuel to controlling the flow of milk.
		´´Poppet valves´´ are used in most piston engines to open and close the intake and exhaust ports.
	www.x-moto.net /articles/Poppet_valve (877 words)

	Valve ,Compressor,China compressor,Shanghai Ichi compressor CO. LTD.,www.compressor-china.com (Site not responding. Last check: 2007-11-06)
		A valve is a mechanical device that regulates the flow of fluids (either gases, fluidised solids, slurries or liquids) by opening, closing, or partially obstructing various passageways.
		Valves are used in a variety of industrial, military, commercial, and residential applications.
		poppet valve is commonly used in piston engines to regulate the fuel mixture intake and exhaust.
	www.compressor-china.com /wiki/Valve.asp (280 words)

	Continental engineers
		This used vertical poppet valves operated by rotating cams with a scroll form, giving the possibility of varying the angular position of the cams, thus varying exhaust and admission patterns.
		This was an advanced form of poppet valve in which two factors were variable (admission and expansion) and the others fixed.
		In the nineteenth century the most popular form of valve gear was the Stephenson link motion, which enabled the point of cut-off to be finely adjusted from the footplate while the locomotive was in motion.
	www.steamindex.com /people/contengr.htm (6026 words)

	Camshaft Index - Auto Parts and Info Directory (Site not responding. Last check: 2007-11-06)
		Some engines use one camshaft each for the intake and exhaust valves; such an arrangement is known as a double or dual overhead cam (DOHC), thus, a V engine may have 4 camshafts.
		Sliding friction between the surface of the cam and the cam follower which rides upon it is considerable.
		The lobes of the camshaft are usually slightly tapered, causing the cam followers or valve lifters to rotate slightly with each depression, and helping to distribute wear on the parts.
	www.auto-parts-and-info.com /Camshaft/index.html (522 words)

	Monopropellant Rocket Study @ LaunchBase.net (Launch Base) (Site not responding. Last check: 2007-11-06)
		The sphere is then pressurized with helium, which pushes the fuel out to the motors.
		A pipe leads from the bladder to a poppet valve, and then to the reaction chamber of the rocket motor.
		The rocket is fired when the computer sends direct current through a small electromagnet that opens the poppet valve.
	www.launchbase.net /encyclopedia/Monopropellant_rocket (388 words)

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