Butterfly valves are suitable for occasions

Butterfly valves are suitable for occasions

　　1. Butterfly valve is suitable for flow regulation. As the pressure loss of butterfly valve in the pipeline is relatively large, about three times as much as that of the gate valve, so when choosing butterfly valve, the pipeline system should be fully considered by the pressure loss, and should also be considered to close the butterfly plate to withstand the pressure of the pipeline medium firmness. In addition, must also be considered in the high temperature of the elastic valve seat material to withstand the limitations of the operating temperature.

　　2. The structural length and overall height of the butterfly valve is small, fast opening and closing speed, and has good fluid control characteristics, the principle of butterfly valve structure Z is suitable for making large diameter valves. When the butterfly valve is required for flow control, it is important to choose the correct size and type of butterfly valve so that it can work properly and effectively.

　　3. Usually, in throttling, regulating and controlling with the mud medium, the structure is required to be short in length and fast in opening and closing speed (1/4r). Low-pressure cutoff (small differential pressure), the recommended choice of butterfly valve.

　　4. In the two-position adjustment, indented channel, low noise, cavitation and cavitation phenomenon, a small amount of leakage to the atmosphere, with abrasive media, you can choose the butterfly valve.

　　5. In the special conditions of throttling regulation, or require strict sealing, or wear and tear, low temperature (deep cold) and other conditions of use of butterfly valves, the need to use specially designed metal sealing with a regulating device, three eccentric or double eccentric special butterfly valves.

　　6. The centerline butterfly valve is suitable for fresh water, sewage, seawater, salt water, steam, natural gas, food, medicine, oil and all kinds of acid and alkali and other pipelines that require complete sealing, zero leakage of gas test, high life requirements, and the working temperature is -10~150℃.

　　7. Soft seal eccentric butterfly valve is suitable for two-way opening and closing and adjustment of ventilation and dust removal pipeline, widely used in metallurgy, light industry, electric power, petrochemical system of gas pipeline and waterway.

　　8. Metal-to-metal line sealing double eccentric butterfly valve is suitable for city heating, steam, water supply and gas, oil, acid and alkali pipelines, as a regulating and intercepting device.

　　9. Metal-to-metal surface sealing three eccentric butterfly valves can be widely used in petroleum, petrochemical, chemical, metallurgy, electric power and other fields as a good alternative to gate valves and globe valves, in addition to being used as a control valve for large-scale Pressure Swing Adsorption (PSA) gas separation device programs.