Dunlop valve
The Dunlop valve, (also called a Woods valve or an English valve) is a type of pneumatic valve stem in use - mostly on inner tubes of legacy bicycles - in some countries, such as Japan[1], Korea, India, Pakistan, Sri Lanka, many European countries, and a number of developing countries. It has a wider base than a Presta valve, similar enough in size to a Schrader valve to use identically drilled valve holes in rims,[2] but it can be inflated with a Presta valve adapter.[3] The inner mechanism of the valve can be replaced easily, without the need for special tools.
Dunlop valve stem
Plug
The inventor was C. H. Woods. It superseded Dunlop's original valve for pneumatic tyres.[4]
Dimensions
External thread: 0.305 in (7.747 mm) x 32 TPI (1⁄32 in or 0.7938 mm pitch)
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See also
References
- "Japan Cycling Navigator:Information: Bikes in Japan: Tyres and Tubes". www.japancycling.org. Retrieved 1 June 2009.
- "Inner tube buying guide". 8 October 2018. Retrieved 10 October 2018.
- Sheldon Brown. "Glossary: Woods Valve". Retrieved 1 December 2010.
- Moulton, Dave (21 August 2007). "John Boyd Dunlop". Dave Moulton's Blog. Retrieved 9 January 2013.
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