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A closed Presta valve. The Presta valve (also French valve ( FV) or Sclaverand valve) is a type of tire valve commonly found on high pressure bicycle inner tubes and is commonly used on tubeless setups. It consists of an outer valve stem and an inner valve body. A lock nut to secure the stem at the wheel rim and a valve cap may also be present.
Dunlop valve with tube. Dunlop valve without tube. The Dunlop valve, (also called a Woods valve, an English valve or a Blitz valve[ 1]) is a type of pneumatic valve stem in use—mostly on inner tubes of bicycles—in many countries, including Japan, [ 2] Korea, India, Pakistan, Sri Lanka, most European countries, and a number of developing ...
The visible outer thread of the stem holds the dust cap. The Schrader valve (also called American valve[ 1]) is a type of pneumatic tire valve used on virtually every motor vehicle in the world today. The Schrader company, for which it was named, was founded in 1844 by August Schrader. The original Schrader valve design was invented in 1891 ...
ICD-9-CM. 35.0 - 35.2. [ edit on Wikidata] Heart valve repair is a cardiac surgery procedure, carried out to repair one or more faulty heart valves. In some valvular heart diseases repair where possible is preferable to valve replacement. A mechanical heart valve is a replacement valve that is not itself subject to repair.
Poppet valve. A poppet valve (also sometimes called mushroom valve[ 1]) is a valve typically used to control the timing and quantity of petrol (gas) or vapour flow into or out of an engine, but with many other applications. It consists of a hole or open-ended chamber, usually round or oval in cross-section, and a plug, usually a disk shape on ...
Valve stem. Replacing a valve stem. A valve stem is a self-contained valve that opens to admit gas to a chamber (such as air to inflate a tire ), [ 1] and is then automatically closed and kept sealed by the pressure in the chamber, or a spring, [ 2][ 3] or both, to prevent the gas from escaping. [ 4]
Transcatheter pulmonary valve replacement (TPVR), also known as percutaneous pulmonary valve implantation (PPVI), is the replacement of the pulmonary valve via catheterization through a vein. It is a significantly less invasive procedure in comparison to open heart surgery and is commonly used to treat conditions such as pulmonary atresia. [2] [3]
Inner tube. Two bicycle inner tubes: A larger mountain bike inner tube and a slimmer race bike tube. An inner tube is an inflatable torus that forms the interior of some pneumatic tires. [ 1] The tube is inflated with a valve stem, and fits inside of the casing of the tire. The inflated inner tube provides structural support and suspension ...