Advantages And Applications of Butterfly Valve
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Butterfly Valve is installed in the pipeline, in the pipeline mainly plays the role of cutting and throttling media. Butterfly valve opening and closing piece is a disc-shaped disc, in the valve body around its own axis rotation 90 degrees, to achieve opening and closing or adjustment purposes. Simple structure, can be used with pneumatic actuators and electric actuators, of course, manual butterfly valve also exists. Butterfly valve can be divided into flanged butterfly Valve and clip-on Butterfly Valve according to the connection mode. According to the seals can be divided into soft Seal Butterfly Valve (namely rubber seal butterfly valve) and hard seal butterfly valve.
Advantages of The Butterfly Valve Including:
1 Simple structure, lightweight
2 Small opening and closing Torque, labor-saving, small fluid resistance
3 Large caliber, can transport mud, paper pulp
4 Good sealing performance and adjustment performance
5 The stem is through stem structure, after conditioning treatment, has good comprehensive mechanical properties and corrosion resistance, anti-scratch
Applications Of Butterfly Valve
Butterfly valve is suitable for flow regulation. Due to the butterfly valve in the pipeline pressure loss is relatively large, should also consider the closure of the butterfly plate under pipeline media pressure firmness. In addition, the temperature limitations of the resilient seat material at elevated temperatures must be considered. Butterfly valve structure length and overall height is small, open and close fast, and has good fluid control characteristics, butterfly valve structure principle is most suitable for the production of large-diameter Valves.
In general, in throttling, regulation control and mud medium, the requirements of short structural length, quick opening and closing speed (1/4 Revolution). Low-pressure cut-off (small pressure difference), recommend the selection of Butterfly Valve.
In double-position adjustment, necking channel, low noise, cavitation and gasification phenomenon, a small amount of leakage to the atmosphere, abrasive media, you can choose the butterfly valve.
When using the butterfly valve under special working conditions, such as throttling regulation, strict sealing, severe wear and tear, low temperature (deep cold) and so on, the special designed metal sealing belt regulating device must be used for the special butterfly valve with three eccentric or double eccentric.
The butterfly valve is suitable for the freshwater, sewage, seawater, saltwater, steam, natural gas, food, medicine, oil and all kinds of acid and Alkali and other pipelines which require complete sealing, zero gas leakage, high service life and working temperature of -10 ~ 150°C.
Soft seal eccentric butterfly valve is widely used in gas pipeline and water channel of metallurgy, light industry, electric power and petrochemical industry.
Metal-to-metal wire sealed double eccentric butterfly valve is suitable for city heating, gas, water and other gas, oil, acid and alkali pipelines, as a regulating and throttling device.
Tri-eccentric butterfly valve can be widely used in petroleum, petrochemical, chemical, metallurgical, electric power and other fields besides being used as a program control valve of large PSA gas separation device, it is a good substitute for gate valve and globe valve.