Butterfly valves are suitable for pipelines that transport various corrosive and non-corrosive fluid media in engineering systems such as coal gas, natural gas, liquefied petroleum gas, city gas, hot and cold air, chemical smelting, power generation and environmental protection, and are used to adjust and cut off the flow of media.
Butterfly valves are suitable for flow regulation. Because the pressure loss of the butterfly valve in the pipeline is relatively large, about three times that of the gate valve, when selecting the butterfly valve, the influence of the pipeline system by the pressure loss should be fully considered, and the firmness of the butterfly plate to withstand the pressure of the pipeline medium should also be considered when it is closed. sex. In addition, the operating temperature limitations of the elastomeric seat material at elevated temperatures must also be considered.
The structure length and overall height of the butterfly valve are small, the opening and closing speed is fast, and it has good fluid control characteristics. The structure principle of the butterfly valve is most suitable for making large-diameter valves. When the butterfly valve is required to be used for flow control, the most important thing is to correctly select the size and type of the butterfly valve so that it can work properly and effectively.
Usually, in throttling, regulating control and mud medium, short structure length and fast opening and closing speed (1/4r) are required. Low pressure cut-off (small differential pressure), butterfly valve is recommended. Butterfly valve can be used in two-position adjustment, narrowed channel, low noise, cavitation and gasification, a small amount of leakage to the atmosphere, and abrasive medium.
The concentric butterfly valve is suitable for fresh water, sewage, seawater, salt water, steam, natural gas, food, medicine, oil and various Acid-base and other pipelines.
Soft-sealed eccentric butterfly valve is suitable for two-way opening and closing and adjustment of ventilation and dust removal pipelines and is widely used in gas pipelines and waterways of metallurgy, light industry, electric power, and petrochemical systems.
original source: https://www.tws-valve.com/news/applicable-occasions-for-butterfly-valve/
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