09,22,2026 27 views
butterfly valveSuitable for pipelines transporting various corrosive and non corrosive fluid media in engineering systems such as furnaces, coal gas, natural gas, liquefied petroleum gas, city gas, cold and hot air, chemical smelting, and power generation environmental protection, used to regulate and cut off the flow of media.
Butterfly valves are suitable for flow regulation. Due to the significant pressure loss of butterfly valves in pipelines, which is about three times that of gate valves, when selecting butterfly valves, the impact of pressure loss on the pipeline system should be fully considered, as well as the robustness of the butterfly plate to withstand the pressure of the pipeline medium when closed. In addition, it is necessary to consider the limitations of the working temperature that the elastic valve seat material can withstand at high temperatures.
The structural length and overall height of butterfly valves are relatively small, with fast opening and closing speeds and good fluid control characteristics. The structural principle of butterfly valves is based on the production of large-diameter valves. When a butterfly valve is required for controlling flow, it is important to choose the correct size and type of butterfly valve so that it can work properly and effectively.
Usually, in throttling, regulating control, and dealing with mud media, short structural length and fast opening and closing speed (1/4r) are required. Low pressure cut-off (small pressure difference), butterfly valve is recommended.
Butterfly valves can be used for dual position adjustment, channel contraction, low noise, air pockets and gasification phenomena, small leakage to the atmosphere, and abrasive media.
When using butterfly valves under special operating conditions such as throttling regulation, strict sealing requirements, severe wear, and low temperature (cryogenic) conditions, special designed metal sealed butterfly valves with regulating devices should be used with three or double eccentricities.
The midline butterfly valve is suitable for use in freshwater, sewage, seawater, saltwater, steam, natural gas, food, medicine, oil products, various acid-base and other pipelines that require * sealing, zero gas leakage in gas testing, high service life requirements, and working temperatures between -10~150 ℃.
Soft sealed eccentric butterfly valve is suitable for bidirectional opening and closing and adjustment of ventilation and dust removal pipelines, and is widely used in gas pipelines and waterways in metallurgy, light industry, power, petrochemical systems, etc.
Metal to metal wire sealed double eccentric butterfly valve is suitable for urban heating, steam supply, water supply, gas, oil, acid and alkali pipelines as a regulating and shut-off device.
Metal to metal face sealed triple eccentric butterfly valve is not only used as a program control valve for large-scale pressure swing adsorption (PSA) gas separation equipment, but also widely used in petroleum, petrochemical, chemical, metallurgical, power and other fields. It is a good substitute for gate valves, globe valves and other products.
