The function of manual butterfly valve
What is the function of manual butterfly valve?
VALTECCN butterfly Valve supplier Answer: Manual butterfly valves are usually used in industrial production pipelines. As a control part of the pipeline, the manual butterfly valve has a very large role. It can cut off the flow of the medium in the pipeline, or adjust the flow of the medium in the pipeline.
At present, manual butterfly valves have been widely used in production pipelines in general industries such as water conservancy engineering, water treatment, petroleum, chemical industry, and urban heating, as well as in condensers and cooling water systems of thermal power plants.
The role of the manual butterfly valve can be summarized as:
- It is used to adjust the flow. When the butterfly valve needs to adjust the flow under special working conditions, or the environment with strict requirements on sealing performance, or the working environment of the butterfly valve is severe wear, low temperature and other harsh working conditions, In the above mentioned situations
In the middle, it is necessary to use a triple eccentric butterfly valve with a specially designed metal sealing belt adjustment device.
- The double eccentric butterfly valve is suitable for use in the pipelines of urban heating, gas supply, water supply and other projects as a regulating and throttling device, and the applicable medium includes oil, acid and alkali substances. The double eccentric butterfly valve has poor sealing performance and is used in pipelines that allow a certain amount of leakage. If the pipeline needs to ensure the sealing performance, a triple eccentric butterfly valve needs to be used.
- The soft-seal butterfly valve has good sealing performance and is suitable for pipelines that are completely sealed for management requirements and have zero leakage. The soft-seal butterfly valve has good sealing performance, but the disadvantage is that it is greatly affected by temperature. ~80℃, the working temperature of fluorine-lined soft-sealed butterfly valve is between -10~150℃. The soft sealing butterfly valve is suitable for weak acid and alkali media such as fresh water, sewage, sea water, salt water, steam, oil and so on.
- Butterfly valves, especially the double eccentric butterfly valves and triple eccentric butterfly valves in the hard-sealed butterfly valve, are suitable for large-diameter valves. Double eccentric butterfly valve is suitable for the opening, closing and adjustment of ventilation and dust removal pipelines, and is widely used in ventilation and dust removal pipelines in metallurgical industry, light industry, electric power industry, petrochemical industry, etc. The application field of triple eccentric butterfly valve is more extensive. It not only inherits the advantages of high temperature and high pressure resistance of metal hard sealing butterfly valve, but also has the excellent sealing performance of soft sealing butterfly valve. It is a good substitute for gate valve, globe valve and ball valve.
Manual butterfly valve, VALTECCN butterfly valve manufacturer, can customize various butterfly valve types according to working conditions