Right In the fluid control and shut down and so on, spool orientation is important for the spool valve core and valve.

对于流体的控制和关闭等，阀芯的导向十分重要，阀芯导向用于阀芯和阀座的对中配合。

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Right In the fluid control and shut down and so on, spool orientation is important for the spool valve core and valve seat oriented toward the tie.

对于流体的控制和关闭等，阀芯的导向十分重要，阀芯导向用于阀芯和阀座的对中配合。

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