What is the function of butterfly valve?

Butterfly valve is composed of valve body, stem, disc, seat and driving device. Although its structure is simple, it is widely used. It is currently used in hot and cold air, hydropower, environmental, building water supply and drainage, municipal engineering and other pipelines. It can be seen in the road system.Among them, resilient seat butterfly valves, double eccentric metal seat butterfly valves, and triple eccentric metal seat butterfly valves are used more frequently in actual working conditions, so what are their functions? Let’s find out with me below.

1.The resilient seat butterfly valve has good sealing performance and can achieve complete sealing and zero leakage. It is suitable for working conditions that require sealing performance. However, the resilient seat butterfly valve is greatly affected by temperature. For example, the working temperature of the rubber resilient seat butterfly valve is 0-80°C, and the working temperature of the PTFE lined resilient seat butterfly valve is between -10-150°C. Applicable media include: fresh water, sewage, sea water, salt water, steam, oil and other weak acid and alkali media.

2.Double eccentric metal seat butterfly valves are often installed in pipelines such as urban heating, gas supply, water supply projects, metallurgical industry, light industry, electric power industry, petrochemical industry, etc. They are used as regulating and throttling devices and can also be used for ventilation. Opening, closing and adjusting the dust removal pipeline. Applicable media are: oil, acidic and alkaline substances, etc. However, the Double eccentric metal seat butterfly valve has poor sealing performance and can only be used in pipelines that allow a certain amount of leakage.

3.Triple eccentric metal seat butterfly valve can be used in a wide range. It is suitable for the environment where the flow rate needs to be adjusted under special working conditions, the sealing performance is strict, the working environment is severely worn, or the medium contains high corrosiveness. Use a specially designed metal triple eccentric metal seat butterfly valve. Triple eccentric butterfly valve not only has the advantages of high temperature and high pressure resistance, but also has good sealing performance. It can replace gate valves, globe valves, ball valves, etc.

After understanding the functions of commonly used butterfly valves, can you clearly choose the butterfly valve that suits you? If you have more questions, please call POPU Valve!