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Open and close of open stem valve of pneumatic regulating valve
The author: Time:2019/9/26

       对于气动调节阀的明杆阀门,需要记住当全开和全闭时的阀杆位置,从而避免调节阀门在全开时冲撞死点,便于检查全闭时阀门是否正常。倘若闭瓣脱落,或阀芯密闭之间嵌入较大杂物,全闭时的阀杆位置就会发生相应的变化。我们在操作时,如果发现在操作的过程中过于费劲,应分析原因。
      倘若填料太紧,可适当进行放松,如阀杆扭曲变形,应通知人员修理。阀门在关闭状态时,关闭件受热膨胀,造成开启困难;如果一定要在这个时间进行开启,可以将阀盖的螺纹拧松半圈至一圈,从而消除气动调节阀阀杆应力,然后扳动手轮。

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