Original
By certification 
Introduction:
At present, the midline butterfly valve, as a part used to realize the on-off and flow control of pipeline system, has been widely used in many fields such as petroleum, chemical, metallurgy, hydropower and so on. It is widely used in butterfly valve technology, and its sealing form is mostly sealed with sealing structure, and sealing material is rubber polytetrafluoroethylene.
Application:
Applicable medium: water, sewage, sea water, air, steam, food, medicine, oil, acid, alkali, salt, etc
Description:
The center line butterfly valve is also known as vertical plate butterfly valve. The structure of the center line butterfly valve is characterized by stem axis, butterfly plate center and body center in the same position. Simple structure and convenient manufacture. Common rubber lined butterfly valve is such. The disadvantage is that the butterfly plate and the valve seat are always in the squeeze, scratch state, large resistance distance, wear fast. In order to overcome the extrusion, scraping, to ensure the sealing performance, the seat is basically made of rubber or PTFE elastic materials, but also because the sealing material is limited by temperature in use, this is why traditionally people think that the butterfly valve is not high temperature resistant.
Specification:
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