对于工业蝶阀，法兰还是标准连接方式。

Flanges are also the standard connection for industrial butterfly type valves.

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注：为了方便客户安装要求，本表给定的数值系与蝶阀链接的标准法兰尺寸，简图中尺寸代号仅是其中一部分。

Note:In order to be convenient for the installation of clients, the numerical value, butterfly valvejoint standard flange size and size code in the table are only one part of them.

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协羽蝶阀是设计用于管路系统连接，两个法兰间的连接或一个法兰间的连接或一个法兰间的连接用于一边已经固定的管路系统。

Hsieh Yu butterfly valve is designed for pipeline system connection between two flanges or with one flange for connection with the pipeline system of which one side has been fixed.

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