packing impacting system
... air diaphragm actuator 气动头 packing impacting system 填料压紧结构 bellevill spring 蝶簧 ...
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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。
V type packing structure has been employed to effectively transform the pushing force of the gland flange and the medium pressure into the sealing force against the stem.
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