Application of butterfly valves

DATE:2017-06-13 Writer:兴水阀门
Butterfly valve is suitable for the flow control, due to the butterfly valve in the pipeline pressure loss is bigger, about three times the gate valve, so when choosing butterfly valves.

Butterfly valves are suitable for flow adjustment. Because of the butterfly valve in the pipeline pressure loss is bigger, about three times the gate valve, so when choosing butterfly valves, piping system is affected by pressure loss should be considered, also should consider closing butterfly plate consistence of pipeline medium under pressure. In addition, it is necessary to consider the limits of working temperature for resilient seat material at high temperature.

The butterfly valve has a small structure length and overall height. It can be turned on and off quickly and has good fluid control characteristics. The structure principle of butterfly valve is best suited for making a large mouth valve. When the butterfly valve is required to control the flow, the size and type of the butterfly valve is chosen correctly, so that it can work properly and efficiently.

Usually, in throttling, regulating control and mud medium, the structure length is short and the opening speed is fast (1/4 turn). Low pressure cut-off (differential pressure), the butterfly valve is recommended.

The butterfly valve can be used in the two - position adjustment, reducing channel, low noise, cavitation and gasification phenomenon, with a small amount of leakage to the atmosphere and the abrasive media.

Throttling under special working conditions, or seal strict, or wear, low temperature (cryogenic) using a butterfly valve, such as operating conditions require special design to triple eccentric metal sealing with conditioning special or double eccentric butterfly valve.

Center line butterfly valve is suitable for the requirements to seal completely, the gas leakage test is zero, the life the demand is higher, the working temperature in - 10 ℃ ~ 150 ℃ water, sewage, sea water, salt water, steam, gas, food, pharmaceutical, oil and all kinds of acid and alkali, and other lines.

The soft sealing eccentric butterfly valve is suitable for the two-way opening and closing of ventilation and dust removal pipelines, and is widely used in gas pipelines and waterways of metallurgy, light industry, electric power and petrochemical systems.

The metal wire sealing double eccentric butterfly valve is suitable for the city heating, gas supply, water supply and other gas, oil, acid and alkali pipeline, as the regulation and throttling device.

Metal to metal surface triple eccentric butterfly valve sealing except as a large pressure swing adsorption (PSA) gas separation device program control valve USES outside, also can be widely used in petroleum, petrochemical, chemical, metallurgy, electric power and other fields, the gate valve, cut-off valve good alternatives.

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