Butterfly valve not only has simple structure, small size, light weight, low material consumption, small installation size, small driving torque, simple and fast operation, but also has good flow adjustment function and closing sealing characteristics at the same time. It is one of the fastest growing valve varieties in the past ten years. The use of stainless steel lng butterfly valves is very extensive. The variety and quantity of its use are still expanding, and it is developing towards high temperature, high pressure, large diameter, high sealing performance, long life, excellent adjustment characteristics, and multi-function of one valve. Moreover, its reliability and other performance indicators have reached a high level.
In order to meet the application requirements of high and low temperature, strong erosion, long life and other industrial applications, the metal seal butterfly valve has 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 valve, it has been widely used in high and low temperature, strong erosion, long life and other industrial fields. Due to the emergence of butterfly valve with large diameter, high pressure and wide temperature range, the technology of stainless steel butterfly valves manufacturers has reached a new level.
When the butterfly valve is opened between about 15°~70°, sensitive flow control can be performed, so in the field of large-diameter regulation, the application of the butterfly valve is very common. Since the movement of the butterfly plate of the butterfly valve is wiping, most butterfly valves can be used for media with suspended solid particles. Depending on the strength of the seal, it can also be used for powdered and granular media.
Because the pressure loss of the butterfly valve in the pipeline is relatively large, it is about three times that of the gate valve. Therefore, when selecting the butterfly valve, the influence of the pressure loss of the pipeline system should be fully considered, and the strength of the butterfly plate under the pressure of the pipeline medium should also be considered when it is closed. In addition, the operating temperature limitations of the elastomeric seat material at elevated temperatures must also be considered.
The structure length and overall height of the butterfly valve are small, the opening and closing speed is fast, and it has good fluid control characteristics. The structure principle of butterfly valve is most suitable for making large diameter valve. When the butterfly valve from a professional industrial valve company is required to be used for flow control, the most important thing is to correctly select the specification and type of the butterfly valve so that it can work properly and efficiently.
Generally, in throttling, regulating control and mud medium, it requires short structure length, fast opening and closing speed, and low pressure cut-off (small pressure difference). Butterfly valve is recommended. Butterfly valve can be selected in the case of two-position adjustment, reduced diameter channel, low noise, cavitation and vaporization, a small amount of leakage to the atmosphere, and abrasive medium. Butterfly valve can also be used for throttling adjustment under extraordinary working conditions, or under working conditions such as strict sealing, severe wear, and low temperature (cryogenic).