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。
2
This paper investigate the distributing complexion of distortion and-stress of valve core, make the analysis of coupling of fluid and solid, investigate the reason of invalidation.
从结构力学角度来研究阀芯的变形及应力分布情况，进行流固耦合分析，研究其失效的可能原因。
3
Must not be smaller than the pipe size of the relief valve or have any reducing coupling installed in the discharge line.