V type packing structure has been employed to effectively transform the pushing force of the glandflange and the medium pressure into the sealing force against the stem.
阀杆采用V型填料密封结构，V型填料能将填料压盖的压紧力及介质力有效地转化成阀杆的密封力。
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This paper deals with stress analysis of the dual-flangegland and application of the related formula.