Pneumatic extended stem butterfly valve
Pneumatic butterfly valve is composed of pneumatic actuator and butterfly valve. Pneumatic butterfly valves use a circular butterfly plate that changes with the movement of the valve stem to open and close to achieve the start-up action. The pneumatic valves are mainly used as cut-off valves. They can also be designed to have the function of regulation or segment valve and regulation. Currently, butterfly valves are used in high-pressure applications. It is increasingly used in large and medium diameter pipelines. Pneumatic butterfly valve classification: ☆Stainless steel pneumatic butterfly valve, ☆Hard seal pneumatic butterfly valve, ☆Soft sealing pneumatic butterfly valve, ☆Carbon steel pneumatic butterfly valve.
Working principle
The working principle of the extended stem butterfly valve is to change the diameter of the valve by rotating the butterfly plate, thereby controlling the flow of the medium. When the valve is closed, the butterfly plate is in complete contact with the valve seat, preventing the flow of the medium. When the valve opens, the butterfly plate rotates with the rotation of the valve stem, so that the diameter of the valve gradually increases, and the medium can flow through the valve. During the opening process of the valve, the rotation angle of the butterfly plate determines the diameter of the valve. By controlling the rotation angle of the valve stem, the opening degree of the valve can be accurately adjusted, thereby achieving precise control of the medium flow. When the valve is fully open, the butterfly plate is parallel to the valve seat, and the medium can pass through the valve without obstruction.
Applications
Extended stem butterfly valves are widely used in various industrial fields, especially in liquid and gas control systems. Its main applications include the following aspects:
1. Flow control: The extended rod butterfly valve can control the flow of the medium by adjusting the opening degree of the valve, and is widely used in flow regulation in pipeline systems.
2. Pressure control: By adjusting the opening degree of the valve, the pressure of the medium in the pipeline can be controlled to ensure the normal operation of the system.
3. Temperature control: The extended rod butterfly valve can adjust the temperature in the pipeline by controlling the flow of the medium to maintain a stable temperature of the system.
4. Prevent backflow: The extended rod butterfly valve has good sealing performance, which can effectively prevent the backflow of media in the pipeline and protect the safe operation of the system.
5. Energy saving and emission reduction: The extended rod butterfly valve has the characteristics of simple structure, light weight and flexible operation, which can reduce the energy consumption of the system and achieve the goal of energy saving and emission reduction. The extended stem butterfly valve controls the flow of the medium by rotating the butterfly plate. It has the advantages of simple structure, flexible operation, and good sealing performance, and is widely used in the industrial field. Through the reasonable selection and use of extended stem butterfly valves, precise control of medium flow can be achieved, improving the safety and stability of the system, while also saving energy and reducing emissions, which has important economic and environmental significance.
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