What are the types of bicycle valves?

1. British mouth (Chinese mouth): relying on the small rubber tube in the gas nozzle to prevent leakage, the air tightness is very good, but the pressure resistance is low, the one-time inflation flow is small, and the durability of the rubber tube is also poor, but the maintenance is convenient and the price is cheap .

2. Beautiful mouth: It is mainly locked by the top force of tire pressure, high pressure resistance, large one-time inflation flow, convenient and fast inflation, and is widely used in inner tubes with large air volume (such as automobile inner tubes).

3. Fa-mouth: Tighten the inner sealing ring by tightening the small ring on the top. To pump up, loosen the small ring to pump up, and then tighten it after finishing. Since the air tightness, the road car inner tube mostly uses the French mouth, and the mountain uses the beautiful mouth. For the user, the mouthpiece is generally not repairable, resulting in the scrapping of the entire inner tube. And the beautiful mouth can be solved by changing the valve core. The British mouth generally only needs to change the small rubber tube.