Valves are an element in inner tubes that allows you to inflate air for bike tire. At the same time, tube prevents it from getting inside. In order to inflate an inner tube at all, you need to know all types of bicycle valves. The wrong attachment or adapter will not allow you to do this. FV (French Valve, although you can also see the term SV, i.e. Sclaverand Valve) are currently the most popular solution. The threaded tube has a diameter of 6 mm and is permanently connected to the tube, with a core with a threaded plunger inside. This clearly distinguishes these types of bicycle valves from the competition. DV, Dunlop valves are slightly older than the Schrader brand, but this is not the main reason for their low popularity. Back in the 90s, these were extremely popular types of bicycle valves, but they have already been replaced by more practical solutions. Today they can be found almost exclusively in children’s bikes and the cheapest two-wheelers for urban purposes. Schrader valve is also called a car valve. This is due to the fact that it is also used in motor vehicles. This valve was created in the 19th century in the United States and was designed by August Schrader. Currently, the element is marked with the symbol AV (Auto Valve)
