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Topic: Valve

Related Topics

Poppet valve

Heart valve

Relief valve

Flow control valve

Globe valve

Gate valve

Pressure relief valve

Diving regulator

Butterfly valve

Sleeve valve

Rotary valve

Safety valve

Check valve

Ball cock

Camshaft

	Mitral Valve and Mitral Valve Prolapse
		The mitral (MI'tral) valve is between the heart's left atrium (upper, holding chamber) and left ventricle (lower, pumping chamber).
		Mitral valve prolapse is also known as click-murmur syndrome, Barlow's syndrome, balloon mitral valve and floppy valve syndrome.
		However, those who have leaky (regurgitant) prolapsing valves are at increased risk of developing an infection of the lining of the heart or heart valve known as endocarditis. In the past, some people with MVP have been given antibiotics before certain dental or surgical procedures to help prevent an infection called bacterial endocarditis (BE).
	www.americanheart.org /presenter.jhtml?identifier=4717 (305 words)

	Aortic valve stenosis - CNN.com
		Aortic valve stenosis — or aortic stenosis — is a condition in which the heart's aortic valve narrows.
		Aortic valve stenosis is narrowing of the aortic valve.
		Aortic valve stenosis also may be related to age and the buildup of calcium deposits on heart valves or a history of rheumatic fever.
	www.cnn.com /HEALTH/library/DS/00418.html (2904 words)

	Valve - Wikipedia, the free encyclopedia
		Although valves are sometimes made connected or integral with some other object like a vessel, many valves are manufactured initially as a separate item to be connected afterwards to some other object such as a pipe, tube, or pump head on at least one of the valve ports either by a manufacturer or the user.
		Valve sizes are commonly given by the outer diameter of tubing or pipng the ports connect to; for example, a 1-inch valve is sized to connect to 1-inch outer diameter tubing.
		However, valves may eventually wear out from use and develop a leak, either between the inside and outside of the valve or, when the valve is shut to stop flow, between the disc and the seat.
	en.wikipedia.org /wiki/Valve (2715 words)

	Valve Corporation - Wikipedia, the free encyclopedia
		Valve Corporation is an American video game developer based in Bellevue, Washington, USA, made famous by its first product, Half-Life, which was released in November 1998.
		Valve continued work on Half-Life, releasing several more extensions to the game and collaborated with other developers to port it to other platforms.
		Between 2002 and 2005, Valve was involved in a complex legal showdown with its publisher, Sierra Entertainment (which was later bought by Vivendi Universal, or VU).
	en.wikipedia.org /wiki/Valve_Software (911 words)

	Valve Disease - Texas Heart Institute Heart Information Center
		This blood is forced through the mitral valve into the lower-left chamber (the left ventricle)—with the mitral valve sealing off to stop the backflow of blood.
		Balloon valvuloplasty is a procedure that may be used to open narrowed tricuspid and pulmonary valves, a narrowed mitral valve, and, rarely, the aortic valve.
		Prosthetic valves can either be mechanical (made from materials such as plastic, carbon, or metal) or biological (made from human or animal tissue).
	texasheart.org /HIC/Topics/Cond/valvedis.cfm (1501 words)

	Heart Valve Disease
		As the ventricles begin to contract, the pulmonic and aortic valves are forced open and blood is pumped out of the ventricles through the open valves into the pulmonary artery toward the lungs, the aorta, and the body.
		Valves may be the wrong size, have malformed leaflets, or have leaflets that are not attached to the annulus correctly.
		Bicuspid aortic valve disease is a congenital valve disease that affects the aortic valve.
	www.webmd.com /content/pages/9/1675_57850.htm (1796 words)

	The Valve Store
		Valve will generally ship orders within 2-3 business days from date of order unless the ship date is specified at the item level.
		If you ordered multiple items, Valve reserves the right to hold your shipment until all items are in stock.
		Valve, the Valve logo, Half-Life, the Half-Life logo, the Lambda logo, Steam, the Steam logo, Team Fortress, the Team Fortress logo, Opposing Force, Day of Defeat, the Day of Defeat logo, Counter-Strike, the Counter-Strike logo, Source, the Source logo, Valve Source and Counter-Strike: Condition Zero are trademarks and/or registered trademarks of Valve Corporation.
	store.valvesoftware.com (163 words)

	Valve Diseases
		The two valves that most commonly become diseased and are responsible for the vast majority of clinical heart valve disease are the inlet (mitral) and outlet (aortic) valves of the main pumping chamber of the heart, the left ventricle.
		The valve may have a defect such as artificial narrowing (stenosis) which restricts blood flow, or may be weakened and cause regurgitation (where the blood is re-directed in the wrong direction).
		The aortic valve is the outflow valve of the left ventricle; it sits at the junction of the left ventricle and the aorta, the large blood vessel responsible for carrying blood to the entire body.
	www.umm.edu /heart/valve_diseases.html (513 words)

	Valve Surgery
		The aortic valve resides deep within the heart and regulates the blood supply to all of the major vessels of the body.
		Mitral valve regurgitation is sometimes caused by mitral valve prolapse, a relatively common and benign condition in which the patient has too large a valve leaflet that makes a snapping sound when the valve closes.
		The type of valve replacement chosen depends largely on the severity of the condition and the overall health of the patient.
	www.columbiasurgery.org /pat/cardiac/valve_repair.html (549 words)

	Valve (Site not responding. Last check: )
		On a brass instrument, a valve is a mechanism that, when in use, directs the air column along additional tubing inside the instrument, thus producing a different fundamental and harmonic series.
		Most modern valved instruments employ similar valve systems which results in the same patterns of valve combinations to alter a pitch.
		It should be noted that the addition of the fourth valve became common in the mid-20th century to help produce better intonation with the third valve combinations that tended to be "out of tune" or having poor intonation (especially the 1st and 3rd valve combination).
	www.music.vt.edu /musicdictionary/textv/Valve.html (147 words)

	Valve at AllExperts
		A valve is a 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.
		Some valves are driven by pressure only, they are mainly used for safety purposes in Steam engines and domestic heating or cooking appliances.
	en.allexperts.com /e/v/va/valve.htm (620 words)

	Aortic valve stenosis: Causes - MayoClinic.com
		Aortic valve stenosis is narrowing of the aortic valve.
		Known as a bicuspid aortic valve, this deformity may not cause any problems until adulthood, at which time the valve may begin to narrow or leak and may need to be repaired or replaced.
		If the aortic valve is narrowed, the left ventricle has to work harder to pump a sufficient amount of blood into the aorta and onward to the rest of your body.
	www.mayoclinic.com /health/aortic-valve-stenosis/DS00418/DSECTION=3 (830 words)

	DriverHeaven.net: Valve Hardware Editors Day December 8th 2005
		Valve’s Jason Mitchell made a comment at the beginning of the presentation stating “We are applying complexity that isn’t really there”.
		With Valve creating the Day of Defeat trailer, they were able to use all in game assets, such as the standard shipping shaders, textures, models, physics, and player driven animation.
		Jason Mitchell from Valve stated “The camera itself can be in motion and causes certain characteristics of blurring in the image itself.” Of course discerning readers will note that anti-aliasing has been a hot topic the past few years, being shown discrete images in time.
	www.driverheaven.net /articles/valveeditorsday/index.htm (1294 words)

	Mitral Valve Prolapse (MVP) Symptoms, Causes, Diagnosis and Treatment on MedicineNet.com
		Mitral valve prolapse (also known as "click murmur syndrome" and "Barlow's syndrome") is the most common heart valve abnormality, affecting five to ten percent of the world population.
		A normal mitral valve consists of two thin leaflets, located between the left atrium and the left ventricle of the heart.
		Mitral valve leaflets, shaped like parachutes, are attached to the inner wall of the left ventricle by a series of strings called "chordae." When the ventricles contract, the mitral valve leaflets close snugly and prevent the backflow of blood from the left ventricle into the left atrium.
	www.medicinenet.com /mitral_valve_prolapse/article.htm (695 words)

	Shacknews - Valve on Episode One
		Steam, while primarily acting as a content delivery system serving Valve as well as a growing number of other independent developers, is also a tool Valve uses to guage gamers' pace, gameplay tendencies, and success rates long after the company's already extensive internal playtesting has finished.
		Because Valve's storytelling have some very specific constraints--the first person perspective is never broken, the player never loses control without good reason, the protagonist never speaks, and so on--this development method is almost necessary to ensure that the intended story and emotions are reaching the player intact.
		First, when Valve gets player feedback on what players think what works and what doesn't work, the company has the opportunity to iterate on gameplay using that information in a matter of months rather than a matter of years.
	www.shacknews.com /extras/2006/060806_valve_ep1_1.x (951 words)

	Introduction: Heart Valve Disorders: Merck Manual Home Edition
		In the left ventricle, the inlet valve is the mitral valve, which opens from the left atrium, and the outlet valve is the aortic valve, which opens into the aorta.
		Mechanical valves last for many years, but people with mechanical valves must take anticoagulants for the rest of their lives to prevent blood clots from forming in the valve.
		Abnormal valves and all replacement valves can become infected, and people need to take prophylactic antibiotics, which are antibiotics taken at certain times (for example, before some dental or medical procedures) in order to prevent bacterial infection of the valves (infective endocarditis).
	www.merck.com /mmhe/sec03/ch028/ch028a.html (679 words)

	eMedicine - Tetralogy of Fallot With Absent Pulmonary Valve : Article Excerpt by: Prema Ramaswamy, MD
		However, when the pulmonary valve is absent and the ventricular septum is intact, a normal ductus arteriosus generally coexists (Yeager, 2002).
		However, TOF with absent pulmonary valve is rare, and approximately 3% of patients with TOF have the absent pulmonary valve syndrome.
		The size of the pulmonary valve annulus and, therefore, severity of pulmonary regurgitation substantially influence patient morbidity and mortality.
	www.emedicine.com /ped/byname/tetralogy-of-fallot-with-absent-pulmonary-valve.htm (719 words)

	Half-Life Fallout > Archives > Valve
		Valve has announced that they will be showcasing Team Fortress 2, Portal and Episode 2 at the Leipzig Games Convention this month.
		Valve has released news that two games by Strategy First will be hitting the Steam content delivery system on February 7th.
		Valve in their never ending quest for more life-like and realistic graphics, have shown off a whole host of new post-processing effects in an article over at bit-tech.net.
	www.hlfallout.net /content/search.php?scope=newscate&type=equal&find=8192 (3528 words)

	Pulmonary valve insufficiency
		Pulmonary valve insufficiency is a disorder involving a defect of the valve located in the pulmonary artery.
		The pulmonary valve is the structure in the pulmonary artery consisting of three flaps, which open and close during each heartbeat.
		Bacterial endocarditis resulting from pulmonary valve insufficiency can usually be prevented with the use of antibiotic prophylaxis in preparation for dental procedures or other procedures which may introduce bacteria into the bloodstream.
	www.healthatoz.com /healthatoz/Atoz/ency/pulmonary_valve_insufficiency.jsp (657 words)

	safety valve - HighBeam Encyclopedia (Site not responding. Last check: )
		SAFETY VALVE [safety valve] device attached to a boiler or other vessel for automatically relieving the pressure of steam before it becomes great enough to cause bursting.
		The common spring-loaded type is held closed by a spring designed to open the valve when the internal pressure reaches a point in excess of the calculated safe load of the boiler.
		Safety valves are installed on boilers according to strict safety regulations.
	encyclopedia.infonautics.com /html/s/safetyva.asp (232 words)

	VALVE: Copy Data, Limiting Transfer Rate
		In an ideal world, wise and benevolent operating systems would automatically throttle bandwidth to achieve this goal, but as we all know, ours is not an ideal world, nor are operating systems, for the most part, wise or benevolent.
		valve is a Unix/Linux/etc. command line utility which copies an input source to an output destination, pausing as necessary between blocks of data to achieve a requested mean transfer rate.
		valve returns status 0 if processing was completed without errors, 1 if an I/O or internal error occurred, and 2 if processing could not be performed at all due, for example, to a nonexistent input file or command line syntax error.
	www.fourmilab.ch /webtools/valve (1075 words)

	MedlinePlus: Heart Valve Diseases
		One of the valves, the mitral valve, sometimes has "floppy" flaps and doesn't close tightly.
		This is called mitral valve prolapse, and it's one of the most common heart valve conditions.
		Valve problems can be present at birth or caused by infections, heart attacks, or heart disease or damage.
	www.nlm.nih.gov /medlineplus/heartvalvediseases.html (470 words)

	Valve World - Home
		The Brazilian government says huge new oil reserves discovered off its coast could turn the country into one of the biggest oil producers in the world....
		Indian valve manufacturer seeks cooperation with a reputed European or American producer of ball valves, trunnion mounted valves and/or metal to metal seated valves.
		Richards Industries is a leading provider of a variety of industrial valves for the chemical, petrochemical, pharmaceutical and food processing industries.
	www.valve-world.net (303 words)

	Main Page - Valve Developer Community
		Whether you're building a "Triple-A" commercial project or a mod for Half-Life® 2 (http://www.half-life2.com), you'll want to sign up as a Valve developer today.
		It's free to join, and open to anyone working with the Source Engine and the Source SDK.
		Valve is now hosting a Bugzilla defect tracking server that will serve as a preferred way of reporting new Source SDK bugs.
	developer.valvesoftware.com /wiki/Main_Page (351 words)

	Untitled
		All files and content previously available at the Valve ERC are available at the Collective.
		If you have trouble finding content on the new site, please make use of the search form in the browse section.
		This Valve ERC will be redesigned at some point in the future to act as a hub site for the VERC network, making it easy to find what you need.
	www.valve-erc.com (82 words)

	Sloan Valve Company - Home Page
		FRANKLIN PARK, IL — Sloan Valve Company has received a Platinum-level award in the 2006-2007 Awards for Design Excellence (ADEX) competition—the highest award level given by design professionals on the judging committee—for its sensor-operated Royal® SMOOTH Flushometer.
		With no visible sensors or fasteners to tempt would-be vandals, and by locating all the serviceable components under the latched top lid, the new SloanStone sinks set the standard for security and ease of maintenance.
		Sloan Valve Company, the world's leading manufacturer of commercial plumbing systems, has made a landmark purchase of renewable energy credits to offset 100 percent of the electricity used in its manufacturing facility in Franklin Park, Ill.
	www.sloanvalve.com (354 words)

	VERC
		VDC contributor AndrewNeo got the article started on how to author content for the Commentary System that was first demonstrated in Lost Coast.
		Since then, Valve's Robin Walker has made some useful additions.
		Al3xand3r dropped me a note to let me know that ModHQ hsa an interview with Valve's Erik Johnson posted.
	collective.valve-erc.com (1716 words)

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