3. 阀体

阀体的中腔被关闭后出现不正常的升温和降压，就是说在阀门被关闭后，封闭于上下游两侧密封面之间的中腔流体压力要远远高出上游压力的情况。原因如下：

(1)膨胀

(2)封闭

WE-3C6-03G-D2-30 WE-3C2-03G-D2-30 

WE-3C3-03G-D2-30 WE-3C4-03G-D2-30

WE-3C8-03G-D2-30 WE-3C9-03G-D2-30 

WE-3C7-03G-D2-30 WE-3C5-03G-D2-30

WE-2B2-03G-D2-30 WE-2B3-03G-D2-30 

WE-2B8-03G-D2-30 WE-2D2-03G-D2-30

WE-3C6-02G-D2-20 WE-3C2-02G-D2-20 

WE-3C3-02G-D2-20 WE-3C4-02G-D2-20

WE-3C8-02G-D2-20 WE-3C9-02G-D2-20 

WE-3C7-02G-D2-20 WE-3C5-02G-D2-20

WE-2B2-02G-D2-20 WE-2B3-02G-D2-20 

WE-2B8-02G-D2-20 WE-2D2-02G-D2-20

WE-3C6-03G-D2-20 WE-3C2-03G-D2-20 

WE-3C3-03G-D2-20 WE-3C4-03G-D2-20

WE-3C8-03G-D2-20 WE-3C9-03G-D2-20 

WE-3C7-03G-D2-20 WE-3C5-03G-D2-20

WE-2B2-03G-D2-20 WE-2B3-03G-D2-20 

WE-2B8-03G-D2-20 WE-2D2-03G-D2-20

WE-2D2-02G-A230-20   WE-2D3-02G-A115-20 

WE-2B2-02G-A230-20   WE-2B3-02G-A115-20

WE-2B2A-02G-A115-20  WE-2B3A-02G-A115-20 

WE-2B4A-02G-A115-20  WE-2B2-02G-A220-20

WE-2B5A-02G-A230-20  WE-2B6A-02G-A230-20