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2. Presta valve - Wikipedia

   en.wikipedia.org/wiki/Presta_valve

   The standard Presta valve has an external thread. An adapter can be fitted onto this external thread to permit the Presta valve to be connected to a pump with a Schrader chuck. The same adapter, because of a coincidence of thread sizes, may be able to convert a Schrader pump into one that can connect to flexible adapters of either kind. [4]

3. Dunlop valve - Wikipedia

   en.wikipedia.org/wiki/Dunlop_valve

   The Dunlop valve has a wider base than a Presta valve, similar enough in size to a Schrader valve to use identically drilled valve holes in rims, [3] but it can be inflated with a Presta valve adapter. [4] The inner mechanism of the valve can be replaced easily, without the need for special tools.

4. Presta - Wikipedia

   en.wikipedia.org/wiki/Presta

   Presta may refer to: Apco Presta, an Israeli paraglider design; Presta valve, a bicycle tire valve style This page was last edited on 4 ...

5. Schrader valve - Wikipedia

   en.wikipedia.org/wiki/Schrader_valve

   The Schrader valve is used on virtually all automobile tires and motorcycle tires and most wider-rimmed bicycle tires.In addition to tube and tubeless tires, Schrader valves of varying diameters are used on many refrigeration and air conditioning systems to allow servicing, including recharging with refrigerant; by plumbers conducting leak-down pressure tests on pipe installations; as a ...

6. HVDC converter station - Wikipedia

   en.wikipedia.org/wiki/HVDC_converter_station

   Valve hall at Henday converter station, part of the Nelson River DC Transmission System in Canada. The converter is usually installed in a building called the valve hall . Early HVDC systems used mercury-arc valves , but since the mid-1970s, solid state devices such as thyristors have been used.