How to repair the sealing of pneumatic ordinary flange butterfly valve if the valve is replaced tightly? The use of this cup is also the cheapest and most common equipment operation at present. Its structure has a specially operated manual operating rod. This part is also designed according to people's usage habits, so in the process of operation, people will not feel very laborious, but very easy. Considering the sealing of each pneumatic butterfly valve, the long rod operation is selected, It can only be controlled by a certain amount of force, and the force should not be too large, which will affect the internal sealing.
、 The temperature pointer of the pneumatic butterfly valve is made of the sealing ring material. If the temperature is less than or equal to 80 degrees, the rubber sealing material should be used. The rubber sealing material can be divided into three types, namely, ethylene propylene rubber material, which is mainly used to combat aging; Nitrile rubber material can resist the invasion of oil substances; Abrasion resistant rubber material.
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