lightweight stoper

例句：

1. 1.The lightweight stoper is easy to install and maintain.
   这种轻质止回器安装和保养都很容易。
2. 2. The lightweight stoper is ideal for use in confined spaces.
   这种轻质止回器非常适合在狭小空间中使用。
3. 3.The lightweight stoper effectively prevents leakage during transportation.
   这种轻质止回器在运输过程中能有效防止泄漏。