Butterfly valves are suitable for flow regulation. Because the pressure loss of the butterfly valve in the pipeline is relatively large, the robustness of the butterfly plate to withstand the pressure of the pipeline medium when closing should also be considered. In addition, the working temperature limit of the elastic seat material
must be considered at high temperatures. 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 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.
Generally, in throttling, adjustment control and mud medium, the structure length is required to be short, and the opening and closing speed is fast (1/4 turn). Low pressure cut-off (small differential pressure), butterfly valve is recommended.
Butterfly valve can be used when there are two-position adjustment, narrowing channel, low noise, cavitation and gasification, small leakage into the atmosphere, and abrasive media.
Throttle adjustment under special working conditions, or strict sealing requirements, or severe wear, low temperature (cryogenic) and other working conditions when using butterfly valves, need to use special design metal seal triple-eccentric or double eccentric Butterfly valve with adjustment device.
The butterfly valve is suitable for requirements to achieve complete sealing, zero gas test leakage, high life requirements, and operating temperature between -10 degrees and 150 degrees. Applicable medium is fresh water, sewage, sea water, salt water, steam, natural gas, food, medicine, oil products And various acids and bases.
The soft seal eccentric butterfly valve is suitable for bidirectional opening and closing and adjustment of the ventilation and dust removal pipeline, and is widely used in gas pipelines and water channels in metallurgy, light industry, electric power, and petrochemical systems.
The metal-to-metal line sealed double eccentric butterfly valve is suitable for gas, oil, acid and alkali pipelines such as urban heating, gas supply, water supply, etc., as a regulating and throttling device.
In addition to being used as a large-scale pressure swing adsorption (PSA) gas separation device program control valve, the metal-to-metal face sealed triple-eccentric butterfly valve can also be widely used in the fields of petroleum, petrochemical, chemical, metallurgy, electric power, etc. as replacement product.