How Does Ball Valve Open And Close

Anyone working in the industrial sector knows that the ball valve is a widely used new type of valve. The opening and closing part of the ball valve is a circular sphere. The sphere rotates around the center line/valve axis of the valve body to achieve the opening and closing effects. So what is the opening and closing direction of the ball valve?

As shown below, the picture of the ball valve switch direction:

1. Drive the ball to the left through the valve stem, rotate it 90 degrees, and the ball valve will be fully opened.

2. Drive the ball to the right through the valve stem, rotate it 90 degrees, and the ball valve is completely closed.

The function of the ball valve in the pipeline is to cut off, distribute and change the flow direction of the medium. In recent years, ball valves have been widely used. Compared with other valves, ball valves have their own advantages:

1. The fluid resistance is small, and its resistance coefficient is equal to that of a pipe section of the same length.

2. Tight and reliable, the sealing performance of ball valves is better than that of butterfly valves. In some pipelines that require tightness, ball valves have more advantages.

3. It is easy to operate and can open and close quickly. It only needs to be rotated 90° from fully open to fully closed. It can be equipped with pneumatic, electric and other driving devices to facilitate remote control.

4. It is easy to maintain. The ball valve has a simple structure and the sealing rings are generally movable, making it easy to disassemble and replace.

6. When the ball valve is fully open or fully closed, the sealing surfaces of the ball and valve seat are isolated from the medium. When the medium passes, it will not cause erosion of the valve sealing surface.

7. The scope of application is wider. The diameter of the ball valve can be as small as a few millimeters and as large as several meters. It can be applied to media from vacuum to high pressure.