... steering coupling 转向联轴节 stem valve coupling 推杆阀快速接头 stem valve self-sealing coupling 推杆阀自封接头 ...
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The NIBCO valve figure number and size must also be furnished and specify valve stem coupling for use with floor stand.
另外还要提供尼伯科阀门型号和尺寸，并说明所要采用的阀门阀杆与地轴架的连接装置。
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