Presta valve

A bicycle tube valve whose stem has a small nut on top, which must be loosened during inflation, instead of a spring such as is found on the Schrader valve.

Dictionary of automotive terms. 2015.

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  • Presta valve — The Presta valve is a valve commonly found in high pressure road style and better mountain bicycle tires, although it is now used on all UST or tubeless mountain bike tires. Its three components are the valve body, a threaded valve stem, and a… …   Wikipedia

  • Valve stem — For the shaft which transmits motion from the outside to the inside of a valve, see Valve#Stem. A valve stem is a self contained valve which opens to admit gas to a chamber (such as air to inflate a tire), and is then automatically closed and… …   Wikipedia

  • valve — A device used to either open or close an opening to allow or prevent the flow of a liquid or gas from one place to another. There are many different types. See ABS relay valve accumultor valve air valve carburetor air control valve air gulp valve …   Dictionary of automotive terms

  • Valve (velo) — Valve (vélo) Sur un vélo, une valve est un élément inséparable de la chambre à air visible sur la jante et qui permet de gonfler ou de dégonfler la roue. Il existe principalement trois types de valves de chambre à air de vélo : les valves… …   Wikipédia en Français

  • Valve (vélo) — Sur un vélo, une valve est un élément inséparable de la chambre à air visible sur la jante et qui permet de gonfler ou de dégonfler la chambre à air. Il existe principalement trois types de valves de chambre à air de vélo : les valves… …   Wikipédia en Français

  • 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

  • Schrader valve — The Schrader valve, invented by August Schrader in the 1890s, consists of a valve stem into which a valve core is threaded, and is used on virtually all automobile tires and wider rimmed bicycle tires. The valve core is a poppet valve assisted by …   Wikipedia

  • 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

  • Dunlop valve — Dunlop (or Woods) valve stem The Dunlop valve, (also called a Woods valve or an English valve) is a type of pneumatic valve stem in use in some countries, such as Japan,[1] Czech Republic, Poland, Russia, the Netherlands, Germany, Britain,… …   Wikipedia

  • Schrader valve — [1] A bicycle tire valve similar to the type found on automobile tires. Also see Presta valve. [2] A spring loaded valve, similar to a tire valve, located inside the service valve fitting to hold refrigerant in the system. Special adapters with… …   Dictionary of automotive terms

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