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Do You Know The Structural Principle Of The Ball Valve?

The gost ball valves supplier shares with you: the opening and closing parts of the ball valve are spheres with circular channels, which rotate around an axis perpendicular to the channel, and the balls rotate with the valve stem to achieve the purpose of opening and closing the channel. The ball valve can be closed tightly with only 90 degree rotation and a small torque. It can be equipped with different driving devices to form ball valves with different control methods, such as electric ball valves, pneumatic ball valves, hydraulic ball valves, etc. according to the working conditions.
Ball valve structure principle:
1. Gost ball valves are not restricted by the installation direction, and the flow direction of the medium can be arbitrary. The fluid resistance is small, and the full-diameter ball valve has almost no flow resistance.
2. The ball valve is simple in structure, relatively small in size, light in weight and convenient for maintenance.
3. Tight and reliable. It has two sealing surfaces. At present, the sealing surface materials of ball valves are widely used in various plastics, which have good sealing performance and can achieve complete sealing. It has also been widely used in vacuum systems.
4. Ball valve is suitable for frequent operation, quick opening and closing, and light weight. Easy operation, fast opening and closing, only need to rotate 90 ° from fully open to fully closed, which is convenient for long-distance control.

Cast Steel Ball Valve


5. Easy maintenance, simple structure of ball valve, seal ring is usually movable, and it is more convenient to disassemble and replace.
6. Cast steel ball valve has good sealing performance. When fully open or fully closed, the sealing surfaces of the ball and valve seat are isolated from the medium, and the medium will not cause erosion of the valve sealing surface when the medium passes.
7. Wide range of application, from small diameter to several millimeters, large to several meters, from high vacuum to high pressure can be applied.
8. Because the ball valve has wiping property during opening and closing, it can be used in the medium with suspended solid particles.
9, ball valve fluid resistance is small, no vibration, low noise.
The role of the ball valve:
The opening and closing part of the ball valve is a round sphere with a hole. The ball core is rotated back and forth by 0-90 ° around the axis of the valve stem to achieve the purpose of opening or closing the valve. Ball valves have many functions. They are generally used to switch off or adjust the medium in the pipeline. The three-way ball valve can flexibly cut, distribute and change the flow direction of the medium. The sealing surface of the ball valve is usually in a closed state with the spherical surface, so it is not easy to be eroded by the medium, easy to operate, simple and compact structure, and can be used in working conditions with water, natural gas, acid, solvent, etc.
The purpose of the ball valve:
Ball valves are generally classified into three categories: floating ball valves, fixed ball valves, and elastic ball valves according to their structural forms. According to different sealing performance, it can be divided into hard-sealed ball valve and soft-sealed ball valve. The soft-sealed ball valve has better sealing performance and can reach zero leakage. It is generally used in normal temperature and pressure pipelines with corrosive media. Can be used at normal temperature and pressure, but also for low temperature and low pressure and high temperature and high pressure pipelines.

 

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