general installation information
General Installation Information: True Union Swing check valves are designed for horizontal installations, but may be installed in up-flow only vertical position.
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general installation information
一般安装信息
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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General installation Information: Utility Swing check valves are designed for horizontal installations, but may be installed in up-flow only vertical position.
一般安装信息：实用旋启式止回阀设计用于水平管道安装，但是也可以安装在垂直朝上的位置。
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