Comprehensive guide for selecting Chinese standard flange globe valves based on engineering requirements
Comprehensive guide for selecting Chinese standard flange globe valves based on engineering requirements
1、 Preface
Flange globe valve is a commonly used valve type, widely used in fields such as petroleum, chemical, power, and water supply. The Chinese standard flange globe valve is a valve produced according to Chinese national standards, which has the characteristics of advanced structure, good sealing performance, and long service life. In the process of engineering selection, how to choose a suitable Chinese standard flange globe valve according to engineering requirements has become a key issue. This article will provide you with comprehensive guidance on selecting Chinese standard flange globe valves from multiple aspects.
2、 Classification of Chinese standard flange globe valves
1. According to its structural form, it can be divided into wedge type globe valves, blade type globe valves, threaded globe valves, etc.
According to the connection method, it can be divided into flange connection, butt welding connection, threaded connection, etc.
3. According to the driving method, it can be divided into manual shut-off valves, electric shut-off valves, pneumatic shut-off valves, etc.
3、 Factors to consider when selecting Chinese standard flange globe valves based on engineering requirements
1. Working medium
Select the corresponding valve material and structural form based on the type of medium (such as water, oil, gas, etc.) and medium temperature. For example, for high temperature, high pressure, and corrosive media, wedge type globe valves should be selected, and materials that are resistant to high temperature and corrosion should be selected.
2. nominal diameter and nominal pressure
Select valves that meet the requirements based on the design parameters of the pipeline (such as nominal diameter, nominal pressure, etc.). The nominal diameter and nominal pressure of Chinese standard flange globe valves have a certain range, and it should be ensured that the selected valve can meet engineering requirements.
3. Connection method
Select the corresponding Chinese standard flange globe valve according to the pipeline connection method. If flange connection is suitable for situations with large pipeline diameter and high pressure; Butt welding connection is suitable for situations where the diameter of the pipeline is small and the pressure is low.
4. Driving method
Choose the appropriate driving method based on the operating mode. Manual shut-off valves are suitable for situations with lower operating frequencies; Electric and pneumatic shut-off valves are suitable for situations with high operating frequency and long distances.
5. Sealing performance
Select valves with good sealing performance according to the engineering requirements for sealing performance. You can refer to the technical information of the valve manufacturer to understand the sealing performance parameters of the valve.
6. Service life
Consider the service life of the valve and choose a valve with reliable quality and easy maintenance. Generally speaking, wedge type globe valves have a longer service life.
7. Installation site
According to the requirements of the installation site, select valves that comply with safety, environmental protection and other regulations. In corrosive environments, corrosion-resistant valve materials should be selected.
4、 Conclusion
When selecting Chinese standard flange globe valves, full consideration should be given to engineering requirements to ensure the safe, reliable, and efficient operation of the valves. At the same time, understanding the technical strength and after-sales service of valve manufacturers provides guarantees for the smooth implementation of the project. I hope this article can provide useful reference for you when choosing Chinese standard flange globe valves.
