A floating ball valve is a valve in which the ball can float. Under the action of medium pressure, the ball can produce a certain displacement and press tightly on the sealing surface of the outlet end to ensure the sealing of the outlet end. The following is a detailed introduction to the floating ball valve:
Structural features: The ball of the floating ball valve is fixed to the valve body through the upper valve stem, and the ball can float within a certain range. The ball of the ball valve is not fixed but can produce displacement under the action of the medium pressure and press tightly on the sealing surface of the outlet end.
Working principle: When the valve is opened, the ball is pushed to the outlet valve seat under the action of the medium pressure to achieve opening; when closed, the ball leans against the inlet valve seat and has a certain floating displacement. Turning the valve stem and driving the ball core to rotate 90° can achieve the switching action of the ball valve.
Sealing performance: The sealing of the floating ball valve mainly depends on the medium pressure to push the ball to the outlet valve seat, so that the ball fits tightly with the valve seat, thereby achieving sealing. This design makes the ball valve have a better sealing effect during operation, but the ball is subjected to greater stress.
Applicable scenarios: Floating ball valves are suitable for medium and low pressure small-diameter pipeline systems, are easy to operate, and are relatively economical. It is also commonly used in general industrial pipeline systems, suitable for medium and low pressure conditions, and easy to operate and maintain. Floating ball valves are suitable for a wide range of media, including water, gas, oil, natural gas, and acid-base corrosive media, etc.
Other features: The floating ball valve has a simple structure and is easy to maintain. The sealing surface and the spherical surface are often in a closed state and are not easily eroded by the medium. The flow resistance of the ball valve is small. When the full-diameter ball valve is opened, the ball channel, valve body channel and connecting pipe diameter are equal and form a diameter, and the medium can flow through almost without loss. In summary, floating ball valves have been widely used in various industrial pipeline systems with their unique structural characteristics, working principles and excellent sealing performance.
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