The structural principle of the best butterfly production
Valve length and overall height of the structure of small, open and close fast, and has a good flow control characteristics, the structural principle of the best butterfly production of large diameter valves. When asked to use the valve for flow control, the most important right choice when the valve size and type, so that it can properly and effectively work.
Typically, the throttle, adjusting the medium control and mud, requiring a short length of the structure, opening and closing speed (1 / 4 turn). Low cut-off (pressure difference), recommended use butterfly.
In the double-digit adjusted, reduced in-channel, low noise, there is the phenomenon of cavitation and gasification, a small amount of leakage to the atmosphere, with abrasive media, you can use butterfly. Special working conditions in the throttle, or require strict sealing, or badly worn, low temperature (cryogenic) and other working conditions when using the butterfly valve, use a specially designed metal seal with the adjustment device to three or two eccentric eccentric Special butterfly. Butterfly valve for applications that require to be completely sealed, the gas leak test is zero, the life require a higher operating temperature -10 degrees to 150 degrees of fresh water, sewage, water, salt water, steam, gas, food, pharmaceuticals, oil and Various chemical and other pipeline. Soft seal butterfly valve for opening and closing the ventilation and dust-way pipeline regulation, widely used in metallurgy, light industry, power, petrochemical and gas pipeline systems and other waterways. Metal to metal sealing double eccentric butterfly valve suitable for urban heating, gas, water and other gas, oil, acid and alkali lines, as a regulator and the throttling device. Metal to metal sealing butterfly valve face except as a large-scale pressure swing adsorption (PSA) gas separation plant process control valves used, can be widely used in petroleum, petrochemical, chemical, metallurgy, electric power and other fields, when the gate valve, globe valve A good alternative.
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