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  2. Valve stem - Wikipedia

    en.wikipedia.org/wiki/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.

  3. Schrader valve - Wikipedia

    en.wikipedia.org/wiki/Schrader_valve

    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 original Schrader valve design was invented in 1891 and patented in the United States in 1893. [2] The Schrader valve consists of a valve stem into which a valve core is

  4. Tubeless tire - Wikipedia

    en.wikipedia.org/wiki/Tubeless_tire

    A tubeless tire (also spelled as tubeless tyre in Commonwealth English) is a pneumatic tire that does not require a separate inner tube.. Unlike pneumatic tires which use a separate inner tube, tubeless tires have continuous ribs molded integrally into the bead of the tire that are forced by air pressure into a flange on the metal rim of the wheel, sealing the tire to the rim.

  5. Presta valve - Wikipedia

    en.wikipedia.org/wiki/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.

  6. Tire - Wikipedia

    en.wikipedia.org/wiki/Tire

    [90] [91] Valve stem: Pneumatic tires receive their air through a valve stem—a tube made of metal or rubber, with a check valve, typically a Schrader valve on automobiles and most bicycle tires, or a Presta valve on high-performance bicycles. They mount directly to the rim, in the case of tubeless tires, or are an integral part of the inner tube.

  7. Radial tire - Wikipedia

    en.wikipedia.org/wiki/Radial_tire

    By comparison, radial tires lay all of the cord plies at 90 degrees to the direction of travel (that is, across the tire from lip to lip). This design avoids having the plies rub against each other as the tire flexes, reducing the tire's rolling friction. This allows vehicles with radial tires to achieve better fuel economy than with bias-ply ...

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