As we all know, ball valves are widely used in chemical, petroleum, metallurgy and other fields, and the inner wall of the popular all-welded ball valve is extremely smooth. In the process of conveying the medium by the ball valve, the friction between the inner wall of the ball valve and the medium is very small, and the medium can pass through unimpeded. However, the fully welded ball valve will be affected by some factors during operation.

1. The influence of sealing material

In actual working conditions, all-welded ball valves generally use various gases as media: such as natural gas, gas, coal gas, chemical industry, heating, heating, etc. The temperature of these media is generally between -20-150 degrees, and the pressure With a pressure of 16-25, the soft seal can meet the requirements, but the quality of the soft seal material is not too hard, and it is easy to cause medium leakage. And due to the serious wear and tear of the medium, the service life of the fully welded ball valve is greatly reduced over time.

2. The influence of processing technology

The overall quality of various all-welded ball valve spools will be determined by the processing technology. The thickness of the wear-resistant layer of the molded rubber hose is uneven, and it is easy to break the thin part first. Therefore, the wear resistance and acid and alkali resistance of the ball valve will become very poor, and can only meet the general working conditions, while the valve core of the fully welded ball valve with high quality technology can well ensure the wear layer and uniform thickness of the cloth layer.

3. The effect of material corrosion

Affected by the corrosion of the valve body, the opening and closing mechanism is damaged, and the valve body is in poor workmanship, resulting in the drive device, pneumatic or electric actuator of the all-welded ball valve being often closed too tightly or not completely closed, and the material of the all-welded ball valve will be rusted. service life.

To sum up, the main factors affecting the use of all-welded ball valves are sealing materials, processing technology, material corrosion, etc. Therefore, in the process of selecting high-quality all-welded ball valves, users need to carefully study the manufacture of all-welded ball valves. Process and materials, and make reference selection according to actual application.