How Does the Butterfly Valve Work?
As a Butterfly Valve Supplier, share with you.
The butterfly valve is a valve that uses a disc-type opening and closing member to reciprocate about 90° to open, close or adjust the flow of the medium. The butterfly valve is not only simple in structure, small in size, light in weight, low in material consumption, small in installation size, small in driving torque, easy and fast to operate, but also has good flow regulation and closing and sealing characteristics at the same time. It has been developed in the past ten years. One of the fastest valve varieties. The use of butterfly valves is very extensive. The variety and quantity of its use continues to expand, and is developing towards high temperature, high pressure, large diameter, high sealing, long life, excellent adjustment characteristics, and one valve with multiple functions. Its reliability and other performance indicators have reached a high level.
With the application of chemically resistant synthetic rubber to butterfly valves, the performance of butterfly valves can be improved. Because synthetic rubber has the characteristics of corrosion resistance, erosion resistance, dimensional stability, good resilience, easy forming, low cost, etc., synthetic rubber with different properties can be selected according to different usage requirements to meet the operating conditions of butterfly valves.
Because polytetrafluoroethylene (PTFE) has strong corrosion resistance, stable performance, not easy to age, low friction coefficient, easy to form, and stable in size, it can be filled and added with appropriate materials to improve its comprehensive performance, resulting in better strength and friction The butterfly valve sealing material with lower coefficient overcomes the limitations of synthetic rubber. Therefore, the high molecular polymer material represented by polytetrafluoroethylene and its filling and modified materials have been widely used in butterfly valves, so that the performance of butterfly valves It has been further improved, and a butterfly valve with a wider temperature and pressure range, reliable sealing performance and longer service life has been manufactured.
In order to meet the requirements of industrial applications such as high and low temperature, strong erosion, and long life, metal-sealed butterfly valves have been greatly developed. With the application of high temperature resistance, low temperature resistance, strong corrosion resistance, strong erosion resistance, and high strength alloy materials in butterfly valves, metal sealed butterfly valves have been widely used in high and low temperature, strong erosion, long life and other industrial fields. The emergence of butterfly valves with large diameter (9~750mm), high pressure (42.0MPa), and wide temperature range (-196~606℃) has brought the technology of butterfly valves to a whole new level.
When the butterfly valve is fully opened, it has a small flow resistance. When the opening is between about 15°~70°, it can carry out sensitive flow control. Therefore, the application of butterfly valves is very common in the field of large-diameter adjustment.
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