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What material is the manual butterfly valve

Jun 13,2022 Posted by Bundor

Industry News
What material is the manual butterfly valve? What material are the manual butterfly valves made of?
Bundor valve: Manual butterfly valve is a very common type of butterfly valve, and it has a wide range of uses. Whether it is water, gas, oil, dust, etc., manual butterfly valves must be used. Manual butterfly valves of different materials can be used in different working conditions.

The main components of manual butterfly valve are valve body, valve seat, butterfly plate, valve shaft and drive.
First of all, the valve body material, the valve body material of manual butterfly valve includes gray cast iron, ductile iron, cast steel, stainless steel, etc. The performance of the material is stainless steel > cast steel > ductile iron > gray cast iron, but if it is in a low pressure environment, The performance of ductile iron is comparable to that of cast steel, and the cost of using ductile iron is lower.
The second is the material of the valve seat. According to the material of the valve seat, the manual butterfly valve is divided into two types: soft seal and hard seal. The valve seat materials of soft-seal manual butterfly valves are mainly rubber and fluoroplastics. in the medium.
The seat material of hard-sealed manual butterfly valve is mostly alloy steel, stainless steel, etc. It is suitable for high temperature and high pressure environment, but the sealing performance is poor.
Then there is the disc material. The disc material of the manual butterfly valve mainly includes ductile iron and stainless steel. Sometimes, in order to adapt to the more complex medium environment, the disc also needs to be covered with rubber or PTFE.
Next is the valve shaft material, which is basically stainless steel.
The last is the driving material of the manual butterfly valve. There are two main modes of operation, the handle and the worm gear. The handle materials are mainly cast iron, carbon steel, stainless steel, aluminum alloy, etc.; the worm gear head is mostly made of cast iron.

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