France valve (FV): manual lock valve, high pressure resistance, smooth linear leakage, gas nozzle base is thin, light weight, small diameter of the nozzle, the impact on the strength of the ring less, you can use the 19C size of the inner tube or narrow ring, the price is high!

American Valve(AV): mainly by internal force lock ring, high voltage, linear leakage is steep, that is to say, when the air pressure is not leak faster, gas nozzle based, gas nozzle diameter is large, but the air flow is large, so it is widely used in large volume gas tube, which is very convenient!

Dunlop valve: valve mouth by a rubber sleeve leak, leak proof ability mainly depends on the quality of the rubber sheath, good airproof (general riders may think the British mouth leak resistant tire quickly, but if the rubber tube does not rot, does not close the gas mouth thing, is not because of the general English materials using butyl inner tube mouth just use the general rubber), but the pressure is low, the valve base, the weight of large, inflatable rubber sleeve, the flow of small, poor durability, but convenient maintenance, not because of the valve problem and scrap tire, low price!