On the tire with an innertube, the valve is mounted on the tube. On the tubeless tire, the valve is mounted on the wheel rim.
有内胎式轮胎气门是直接做在内胎上的，无内胎式轮胎的气门安装在轮毂上。
2
The utility model relates to a piston valve which is installed in a cylinder tube of a pressure device, wherein the cylinder tube has an inner ring wall face towards the piston valve.
一种安装在压力装置的缸管内的活塞阀，在缸管上具有一朝向活塞阀 的内环壁面。
3
The inner end of sampling tube is one-sided slant wedge with the caliber of check valve;