Usually, in throttling, regulation and mud medium, it is required that the length of the structure be short and the opening and closing speed be quick. For low-pressure shut-off uses, flange sanitary butterfly valves are recommended.
1. Flange butterfly valves can be used in circumstances like double-position regulation, necking channel, low noise, cavitation and gasification, a small amount of leakage to the atmosphere, corrosive media.
2. When using butterfly valves under circumstances like throttling under special working conditions or severe wear in low temperature conditions, three eccentric or double eccentric flange butterfly valves that have special-design metal sealing with regulating device need to be used.
3. Metal-to-metal sealing three-eccentric butterfly valve, in addition to being used as the control valve for large-scale pressure swing adsorption gas separation device, can be widely used in petroleum, petrochemical, chemical industry, metallurgy, electric power and other fields. It is very good replacement product for gate valve and sanitary shut-off valve.
4. The flange centerline butterfly valve is suitable for fresh water, sewage, seawater, brine, steam, natural gas, food, medicine, oil, all kinds of acid and alkali and other pipelines that require complete sealing, zero gas leakage, long service life, working temperature of minus ten to one hundred and fifty degrees Celsius.
5. Metal-to-metal line sealing double eccentric flange butterfly valve is suitable for urban heating, gas, water, oil, acid, alkali and other pipelines as regulation and shut-off device.
6. Flange soft eccentric butterfly valve is suitable for two-way opening and closing and regulation of ventilation and dust removal pipelines. It is widely used in gas pipelines and waterways of metallurgy, light industry, electric power, petrochemical systems.