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What are the butterfly valve materials

Dec 23,2021 Posted by Bundor

Industry News
In this article, Bundor VALVE takes you to talk about the material of butterfly valve body, butterfly plate and valve seat.

A complete butterfly valve is mainly composed of valve body, butterfly plate, valve seat, drive device, valve shaft and other parts. The material selection of valve body, butterfly valve and valve seat has a great impact on the price and operating conditions of the butterfly valve. Influence. In this article, Bundor VALVE takes you to talk about the material of butterfly valve body, butterfly plate and valve seat.

Body material

Gray cast iron: The most common material in butterfly valves. It is mainly used in water systems. It is easy to be corroded, has a short service life and is cheap.

Ductile cast iron: A material with performance comparable to carbon steel in butterfly valves. Generally used in water system pipes, it is also a very widely used material in water systems.

Carbon steel: It can also be used in water systems, but it is not used much. Carbon steel butterfly valves have high temperature and pressure resistance. Generally, hard-sealed butterfly valves are mostly made of carbon steel.

Stainless steel: It has good anti-corrosion and anti-corrosion performance. It is also used in pipelines that need anti-corrosion and anti-rust, and the cost is relatively high.

Disc material

The butterfly plate of the butterfly valve is directly in contact with the medium in the pipeline, so the material of the butterfly plate will not be as rich as the material of the valve body. The common butterfly plate materials are ductile iron and stainless steel, as well as copper.

Valve seat material

The valve seat of the butterfly valve is used to ensure the sealing performance of the valve, especially the soft-seal valve seat, the sealing performance is very good. Common valve seat materials are:

EPDM rubber: Applicable medium: water, steam, etc. at -20-120℃;

Nitrile rubber: applicable medium 0-80℃ oil products;

Polytetrafluoroethylene: suitable for corrosive media below 200°C;

Cemented carbide: suitable for high temperature and high pressure environment;

In addition, the valve seat materials include natural rubber, silicone rubber, nylon, stainless steel and so on.

The above is the content of the butterfly valve body material, butterfly plate material and valve seat material introduced for you. If you need to purchase butterfly valve products, you can click on the online customer service inquiry.

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