Butterfly valve suitable for the occasion

Butterfly valves are widely used for flow regulation.Butterfly valves have a high pressure loss in the pipeline, which is approximately three times that of gate valves.So the choice of butterfly valve, should fully consider the pipeline system by the impact of pressure loss, should also consider the closure of the butterfly plate to withstand the pressure of the pipeline medium robustness and high temperature resilient seat material can withstand the limitations of the working temperature.Butterfly valve structure length and overall height is relatively small, open and close speed block, has good fluid control characteristics, its structure principle is most suitable for the production of large diameter valves.When butterfly valves are required for flow control, the most important thing is to correctly select the size and type of butterfly valve so that it can work more efficiently.

1. Generally, short structure length and fast opening and closing speed are required in throttling, regulating control and mud medium.Low pressure cut-off, butterfly valve is recommended.

2. Butterfly valve can be used when there is a small amount of leakage into the atmosphere and corrosive medium in the channel of double-position regulation, shrink mouth, low noise, cavitation and gasification phenomenon.
 
3. When the butterfly valve is used under special working conditions such as throttling regulation or strict sealing requirement, severe wear and low temperature, special three-eccentric or double-eccentric butterfly valve with specially designed metal seal and regulating device shall be used. 

4.Metal-on-metal sealing triple eccentric butterfly valve is not only used as a program control valve of large pressure swing adsorption gas separation device, but also widely used in petroleum, petrochemical, chemical industry, metallurgy, electric power and other fields, is a good substitute for gate valve, globe valve and so on. 

5. The middle line butterfly valve is suitable for fresh water, sewage, sea water, salt water, steam, natural gas, food, medicine, oil and all kinds of acid and alkali and other pipelines with complete seal, additional gas leakage, high life requirement and operating temperature of -10-150 degrees.

6 metal to metal wire sealing double eccentric butterfly valve is suitable for urban heating, gas supply, water supply and gas, oil, acid and alkali pipelines, as an adjustment and closure device.

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