Correct selection of butterfly valve

by:Lianke Valve     2022-09-03
Generally, in throttling, regulating control and mud medium, short structure length and fast opening and closing speed (1/4 revolution) are required. Low pressure cut-off (small differential pressure), butterfly valve is recommended. Butterfly valve can be used in two-position adjustment, constricted channel, low noise, cavitation and gasification, a small amount of leakage to the atmosphere, and abrasive medium. When the butterfly valve is used for throttling adjustment under special working conditions, or requiring strict sealing, or serious wear, low temperature (cryogenic) and other working conditions, it is necessary to use a specially designed metal sealing belt adjustment device for triple eccentric or double eccentric. Butterfly valve. The centerline butterfly valve is suitable for fresh water, sewage, seawater, salt water, steam, natural gas, food, medicine, oil and various products that require complete sealing, zero gas test leakage, high life expectancy, and working temperature between -10 degrees and 150 degrees. 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. Metal to metal wire sealed double eccentric butterfly valve is suitable for urban heating, gas supply, water supply and other gas, oil, acid and alkali pipelines, as a regulating and throttling device. In addition to being used as a program control valve for a large pressure swing adsorption (PSA) gas separation device, the metal-to-metal surface sealing triple eccentric butterfly valve can also be widely used in petroleum, petrochemical, chemical, metallurgy, electric power and other fields. replacement product.
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