阀杆上的短梯形螺纹适用于快速启闭操作。
Stub acme thread on stem provides rapid open-close operation.
阀杆上的短梯形螺纹适用于快速启闭操作。
Apply pipe dope sparingly on pipe threads, never on valve threads.
手动执行器轴是单导短梯形螺纹，带一件重型焊接夹子。
Manual actuator stems are single lead stub acme threads with one piece heavy duty clip welded on.
手动执行器轴是单导短梯形螺纹，带一件重型焊接夹子。
Manual actuator stems are single lead stub acme threads with one piece heavy duty clip welded on.
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