Introduction: In the field of marine work and ships in our country, ball valves are inseparable from these works. The fluid can be controlled and regulated using a ball valve. In the 1950s, the appearance of the ball valve promoted the development of the industry.

In China, in some fields, such as: petroleum industry, chemical manufacturing, pharmaceutical engineering, water conservancy engineering, steel industry, electric power industry... Ball valves are widely used and play a vital role in my country's national economy.

The main function of the ball valve is to cut off the flow, distribute the flow rate and change the flow direction, and it can rotate ninety degrees. The ball valve has many functions, and it can also be used as a switch.

Next, I will introduce the characteristics of the ball valve: First, it has good wear resistance. The reason for its wear resistance is that the valve core is welded with alloy steel when it is sealed, and its sealing ring is also made of alloy. Welded steel. Second, it has good sealing performance, and the reliability of the sealing performance of the ball valve is extremely high, because its sealing is artificially run-in, only when the valve core and the sealing ring are completely matched. Third, the switch of the ball valve is light, and the bottom of its sealing ring has a spring between the valve core and the sealing ring. Fourth, the ball valve has a long service life, and it is mostly used in the petroleum industry, chemical manufacturing, power plants, paper mills and other places.

There are many types of ball valves. We introduce a common ball valve - pneumatic ball valve. Pneumatic ball valve has many advantages: 1. It can prevent static electricity, because there are springs in many places in the ball valve, so that the static electricity generated during use can be exported. 2. Long service life, because it uses a lubricant with better performance, which greatly reduces the loss of the ball due to friction. 3. The resistance of the airflow gate valve is the smallest among all gate valves. 4. The sealing performance of the ball valve seat is excellent.

Classification of ball valves:

According to the function of the ball valve: 1. Bypass valve, which is generally used as a switch for still water. Second, the air valve, which is to remove the air when the container is filled with water; when the water in the container is emptied, the float inside will slowly descend. 3. The pressure relief valve can remove the pressure when it is opened or closed, so as to avoid wear and tear. Fourth, the sewage valve can discharge the sewage in the lower part of the sphere.

Matters needing attention: First, before disassembling and disassembling the ball valve, check whether the upper and lower pipes of the ball valve have been depressurized. Second, some non-metallic parts in the ball valve cannot be soaked in detergent for too long when cleaning. Third, when installing, the screws should be tightened gradually and evenly, and the capacity should not be too large. Fourth, some non-metal parts should be cleaned with pure water or alcohol. Fifth, the parts of the decomposed single ball valve can be soaked, and some stains can be wiped off with a silk cloth, and all the stains can be cleaned as much as possible.