这种阀门可以水平安装或垂直安装。

The valve can be installed horizontally or vertically.

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阀门应该只能安装在水平流向的管线上，其阀杆应该垂直向上。如果需要其它方式的安装，请在订购阀门时咨询工厂。

Valves should be installed in the (stem) vertical position with the pipe flow horizontal only. For installations other than this, please consult factory when ordering.

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当阀门水平放置运输时传动装置及传动部位应悬空，以防止传动轴受力过大变形损坏。

Transmission device and part should be hung up when the valve is in horizontal in order to prevent damage of axle.

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