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Butterfly valve: different conditions for different types of occasions
Due to the wiping properties of butterfly valve plates, most butterfly valves are available for media with suspended solids and can also be used in powdered and granular media depending on the strength of the seal. The butterfly valve has a low overall length and overall height, opens and closes fast, has less fluid resistance when fully opened, and provides sensitive flow control when opened to between approximately 15 ° and 70 °. The butterfly valve The structural principle of the most suitable for the production of large-caliber valves. Under the conditions of the following conditions, the recommended choice of butterfly valves: ①require throttling, regulating control flow; ② mud media and solid particles containing media; ③ require the valve structure of the short length of occasions; ④ require opening and closing speed occasions; ⑤ pressure Smaller occasions. In the two-bit regulation, narrow mouth of the channel, low noise, cavitation and gasification phenomenon, a small amount of leakage to the atmosphere, there is abrasive medium, you can choose butterfly valve. Under special operating conditions, throttling regulation or require strict sealing, or severe wear and tear, cryogenic (cryogenic) and other conditions when the use of butterfly valves, the need to use special design metal seal with a regulator tri-eccentric or double eccentric butterfly valve . Soft sealing butterfly valve for ventilation dust removal pipeline bidirectional opening and closing and regulation, metallurgy, light industry, electricity, petrochemical systems, gas pipelines and waterways. Metal to metal wire sealing double eccentric butterfly valve for heating, steam supply, water supply and gas, oil, acid and other pipelines, as regulating and intercepting device. In addition to the large pressure swing adsorption gas separation control valve, the metal to metal surface seal triple eccentric butterfly valve can also be widely used in the fields of petroleum, chemical industry, metallurgy, electric power, food, medicine, water supply and drainage, gas transportation and the like.