其特點為：
由于采用的是三偏心結(jié)構(gòu)，密閉性能可靠，確保開啟時蝶板不接觸密封座，消除了密封座不均勻負(fù)載，延長了使用壽命，確?？煽康拿芊庑阅?，具有耐高溫、耐磨損、耐腐蝕等優(yōu)點。
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