English valve

English valve

The English valve (Dunlop valve, Woods valve or English valve) is often referred to as the English valve. Its history can be traced back to the invention of the pneumatic tire by Scottish veterinarian John Boyd Dunlop in 1888. The inflation device used It is this kind of valve, so it is called "Dunlop valve" or "English valve". In addition, because the wheel spokes at that time were all made of wood, this is the origin of the "Woods valve".