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, Czech Republic, India, Pakistan, Poland, Romania, Russia, the Netherlands, Germany, Britain, Finland, Sweden, Denmark, and
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, but it can be inflated with a Presta valve adapter. The inner mechanism of the valve can be replaced easily, without the need for special tools. The inventor was C. H. Woods. It superseded Dunlop's original valve for pneumatic tyres.