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The working principle and characteristics of flange forged steel ball valve

Flanged forged steel ball valve has the function of rotating 90 degrees. The cock body is a sphere with a circular through hole or channel on the shaft. ball valves are mainly used to block, distribute and change the flow direction of the medium in the pipeline. Just turn it 90 degrees to close the small torque tightly. ball valves are suitable for use as on-off and globe valves, but recent developments have designed ball valves that suppress and control flow, such as V-shaped ball valves.


Flanged forged steel ball valve has compact structure, reliable sealing, simple structure and convenient maintenance. The sealing surface and spherical surface are often in a closed state and are not easily corroded by the medium. Forged steel ball valves are suitable for general working media such as water, solvent, acid, natural gas, etc., and are also widely used in media with harsh working conditions such as oxygen, hydrogen peroxide, methane, and ethylene. The ball valve body can be one-piece or combined.
Advantages of flanged forged steel ball valves:

1. The fluid resistance is small, and the full-bore ball valve basically has no flow resistance.

2. Simple structure, small size and light weight.

3. Tight and reliable. There are two sealing surfaces, and the current ball valve sealing surface materials are widely used in various plastics, which have excellent sealing performance and can be completely sealed. It is also widely used in vacuum systems.

4. Easy to operate, quick to open and close, only need to rotate 90° from fully open to fully closed, which is convenient for remote control.

5. It is easy to maintain, the ball valve has a simple structure, the sealing ring is generally movable, and it is easy to disassemble and assemble.

6. When fully open or fully closed, the sealing surface of the ball and valve seat is isolated from the medium, and even if the medium passes through, the sealing surface of the valve will not be eroded.

7. The diameter ranges from several millimeters to several meters, and the application range is very wide, from high vacuum to high pressure.

8. Due to the wiping property of the ball valve when it is opened and closed, it can be used for the medium of suspended solid particles.

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