The assembly method of valve nozzle can be divided into twist, compaction and buckle type.For example, the assembly of the rubber valve nozzle is the buckle type, and the valve base has a slot to be fixed with the wheel, which also leads to the use of the disposable, once removed, it cannot be used again.The metal valve nozzle is assembled by screw-type assembly, which can be fixed and reused after being removed by using gasket and fastening nut. In addition, in the process of valve installed to the wheel rim, is worth to pay close attention to some details, the details are not only conducive to the valve installed, also conducive to ensure valve tightness, prolong the service life.  Therefore, be sure to polish your eyes when the maintenance technician replaces the valve nozzle to see if the installation step is correct.