The center line butterfly valve is a commonly used control valve, which can play an important role in stabilizing the flow rate and regulating the pressure in the fluid system. Choosing the right type of center line butterfly valve is very important for the stable operation of the system. This article will introduce the basic principle of the center line butterfly valve, and how to choose the right type according to the system requirements, so as to ensure the stability and efficiency of the system operation.
First, the basic principle of the center line butterfly valve
The center line butterfly valve is a valve with a disc in the valve body as the closing part, and the fluid is controlled and adjusted by rotating the disc. Its basic structure includes valve body, valve stem, valve disc and so on. The valve body is the main part of the valve and has a butterfly opening for the passage of fluid. The stem connects the valve disc and the operating mechanism, and controls the on-off and regulation of the fluid by rotating the valve disc.
The center line butterfly valve is characterized by simple structure, small size, light weight and good fluid control performance. Because the disc can be fully opened, fully closed and adjusted at any position, the center line butterfly valve is widely used in flow control and pressure regulation.
Second, choose the right type of butterfly valve factors
1. Fluid media characteristics: Different fluid media have different requirements for the material and sealing of the valve. For example, corrosive media need to choose corrosion resistant materials, high temperature media need to choose high temperature resistant materials. Therefore, when selecting the type of butterfly valve, the characteristics of the fluid medium should be fully considered, and the corresponding material and sealing structure should be selected.
2. Working pressure and temperature: The working pressure and temperature range of the middle line butterfly valve are also key factors in the selection. According to the specific working conditions, choose the type of center line butterfly valve that can withstand the corresponding pressure and temperature to ensure the reliability and safety of the valve.
3. Flow requirements: Determine the size and flow path form of the center line butterfly valve according to the flow requirements of the system. It should be noted that if the flow rate in the system is large or there is a pulsating flow, the type of center line butterfly valve with good hydrodynamic characteristics, low flow resistance and low noise should be selected.
4. Use environmental conditions: Considering the use environment of the middle line butterfly valve, such as vibration, corrosion, high temperature and other factors, choose the type of middle line butterfly valve with good adaptability. Under special environmental conditions, it is also necessary to consider the sealing performance and corrosion resistance of the valve.
Three, common center line butterfly valve types
According to the different needs of the fluid system, the common types of midline butterfly valves are as follows:
1. Single eccentric butterfly valve: Single eccentric butterfly valve has low friction and closing torque, suitable for general flow control and regulation.
2. Double eccentric butterfly valve: The double eccentric butterfly valve has higher pressure resistance and better sealing performance than the single eccentric butterfly valve, which is suitable for some occasions with higher sealing requirements.
3. Three eccentric butterfly valve: Three eccentric butterfly valve is further developed on the basis of double eccentric butterfly valve, with higher sealing and corrosion resistance, widely used in high demand flow and pressure regulation occasions.
4. High temperature butterfly valve: high temperature butterfly valve adopts high temperature resistant alloy material and special sealing structure, can operate stably in high temperature environment, suitable for oil refining, chemical industry and other fields.
5. Pulsating butterfly valve: pulsating butterfly valve adopts segmented flow channel design, which can reduce the influence of pulsating flow on the valve and maintain the stability of the fluid. It is suitable for the system with large flow pulsation.
6. Special material butterfly valve: special material butterfly valve is suitable for special media or special working conditions, such as strong acid, strong alkali, high purity gas, etc. Select the corresponding special material valve to ensure the stable operation of the system.
Iv. Summary
Choosing the right type of butterfly valve is very important for the stable operation of the fluid system. According to the fluid medium characteristics, working pressure and temperature, flow requirements and use of environmental conditions and other factors, reasonable selection of the middle line butterfly valve material, sealing performance and type. Common center line butterfly valve types include single eccentric butterfly valve, double eccentric butterfly valve, three eccentric butterfly valve, high temperature butterfly valve, pulsating butterfly valve and special material butterfly valve. Selecting the right type of center line butterfly valve according to the specific requirements can ensure the stable operation of the system and improve the efficiency and reliability of fluid control.
I hope this article will help you choose the right type of butterfly valve to ensure the stability and efficiency of the system operation. For further information, please feel free to consult a professional or LIKV valve manufacturer for more detailed information and advice.
Post time: Jul-25-2023
