The second photo shows the other side of the block after the flange on the second side has been turned and the two internal counter-bores have been added.

第二照片显示的另一侧块后，法兰的第二个方面一直拒绝和两个内部反孔，增加了。

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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.

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。

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Side mount, Fix Closeing, Without flange.

侧放，固定关闭，无轮缘。

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