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。
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。
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