How Ball Valves Are Classified According to Standards

In-depth analysis: How to classify ball valves according to standards

In the world of valves, ball valves occupy a niche due to their unique structure and efficient working performance. The diversity of ball valves stems from their classification according to different standards. This article is intended to provide professionals with a detailed and in-depth guide on how to classify ball valves according to standards ball valve manufacture.

1. Using structure as the classification standard

The structural classification of ball valves is mainly based on the shape and combination of its main components such as valve body, ball, valve stem, and sealing ring. Usually divided into the following categories:

Floating ball valve: The ball is floating, guided by the valve stem and rotates freely in the valve body. The advantages of this structure are simple manufacturing and good sealing, but due to the unbalanced pressure on the ball, it is prone to wear.
Fixed ball ball valve: The ball is fixed in position, supported by bearings, and driven by the rotation of the valve stem. The advantage of this structure is that the operating torque is small and the ball is not easy to wear. However, due to the complex structure, the manufacturing cost is high.
Three-way ball valve: It has three channels and can realize a variety of fluid control functions, such as diverting, converging, reversing, etc. According to the sphere structure and channel layout, it can be divided into T type and L type, globe valve manufacture.

2. Using driving method as the classification standard

The driving methods of ball valves are mainly classified according to the source of power for opening and closing. Mainly include the following categories: Manual ball valve: opened and closed through manual operation such as handwheel and handle. Suitable for small, low-frequency operations.
Electric ball valve: driven by an electric motor, remote control and automated operation can be achieved. Suitable for large-scale and high-frequency operations.
Pneumatic ball valve: driven by air pressure, it has the advantages of quick response and explosion-proof. Suitable for occasions requiring quick cutting or special environment.

3. Using materials and coatings as classification criteria

The material and coating of the ball valve determine its applicable medium, working pressure and temperature range, as well as corrosion resistance, wear and other properties. Mainly include the following categories:

Metal ball valves: including cast iron, carbon steel, stainless steel, etc., suitable for various corrosive media and high temperature and high pressure environments. Through different heat treatments and surface treatments, its corrosion resistance, wear and other properties can be improved.
Plastic ball valves: including PVC, PP, PE, etc., suitable for corrosive media and low temperature environments. It has the advantages of light weight and low price, but has poor pressure resistance and high temperature resistance, check valve manufacture.
Coated ball valve: A layer of special materials is coated on the surface of the metal ball, such as ceramics, alloys, etc., to improve its corrosion resistance, wear and other properties. Coating selection should be tailored to the media and working conditions.

4. Use connection method as classification standard

The connection methods of ball valves are mainly classified according to their installation and disassembly methods. Mainly include the following categories: Flange connection ball valve: connected to pipes through flanges, suitable for various pressure and temperature ranges, but installation and disassembly are more cumbersome.
Clamp connection ball valve: The ball is connected by clamping the ball with two flanges. It has the advantages of simple structure and light weight, but has poor pressure resistance.
Threaded connection ball valve: connected to pipes through threads, suitable for low pressure and small diameter situations, and is more convenient to install and disassemble, gate valve manufacture.

5. Using functions as classification criteria

The functions of ball valves are mainly classified according to their role in fluid control systems. Mainly include the following categories: Cut-off ball valve: used to completely cut off the fluid channel, with good sealing performance and low leakage rate. Usually used for opening and closing control of pipeline systems.
Regulating ball valve: Adjusts flow and pressure by changing the gap between the ball and the sealing ring, with good regulating performance and stability. Usually used where precise control of fluid parameters is required.
Check ball valve: It has the function of preventing fluid from flowing back. It is usually used in situations where one-way flow needs to be maintained, such as pump outlets, compressor outlets, etc.

6. Conclusion

This article provides a detailed classification of ball valves according to five dimensions: structure, driving method, material and coating, connection method, and function. For every professional working in the field of ball valves, understanding and mastering these classification standards will help better select and apply suitable ball valve products. At the same time, we should also pay attention to the latest developments and technological development trends in the ball valve industry in order to keep up with changes in market demand and provide customers with better products and services.