Butterfly valve is a commonly used flow control device, which can be used to adjust the size of fluid flow. However, whether the butterfly valve is suitable for controlling flow needs to be evaluated according to the actual situation.
Butterfly valve is a flow control device with simple structure and convenient operation. It uses the rotating disk inside the valve to control the flow of the medium, and has the characteristics of compact structure, light weight, and convenient installation. Therefore, butterfly valves are widely used in water treatment, petroleum, chemical industry, electric power and other industries to control the flow, pressure and temperature of liquid or gas.
·:
The flow control principle of the butterfly valve is based on the rotation of the disc inside the valve body to change the channel area of the medium. When the valve is in a fully open state, the channel area is the largest, and the medium can pass through the valve freely; when the valve is in a fully closed state, the channel area is the smallest, and the medium cannot pass through the valve. When the valve is in a partially open state, the channel area will also change with the change of the valve opening, so as to achieve the purpose of flow control. Therefore, the butterfly valve is actually a relatively simple throttling device.
One of the advantages of butterfly valves is their high reliability. They are usually designed to be very durable and can withstand harsh conditions such as high temperature and high pressure. At the same time, the butterfly valve also has the characteristics of simple operation, good sealing, small valve volume, low noise, etc., and can be used in some high-demand flow control occasions.
·:
However, it should be pointed out that butterfly valves are not suitable for all flow control applications. In some occasions with high precision and high pressure difference, such as chemical, pharmaceutical, food and other fields, butterfly valves may not be able to meet the requirements because of their large flow resistance, which is prone to eddy currents and noise. At this time, it is necessary to select other types of flow control devices, such as regulating valves, stop valves, safety valves, etc.
To sum up, the butterfly valve is a common flow control device that can be used to control the flow, pressure and temperature of liquids and gases. The butterfly valve controls the channel area of the medium through the rotation of the disc to achieve the purpose of flow control. The advantages of butterfly valves include high reliability and simple operation, but there are also certain limitations. Therefore, when selecting a flow control device, it needs to be evaluated in combination with the actual application.