What is a floating ball valve used for?
The floating ball valve features a bottom-mounted stem anti-flyaway design and is compatible with sealing rings made of various materials such as PTFE and elastomers. It has a nominal diameter range of DN15-250, an applicable temperature range of -196℃ to 350℃, and a pressure rating up to PN100. It supports manual, pneumatic, electric, and hydraulic actuation methods and is suitable for water, gas, oil, natural gas, and acid/alkali corrosive media. It is widely used in petrochemical, natural gas, and water treatment industries.
Basic Function and Working Principle of Floating Ball Valves
The main function of floating ball valves is to cut off, connect, or regulate the medium in a pipeline, or to change the flow direction of the medium. A ball valve typically consists of a valve body, a ball, a stem, and other actuating components. When the ball valve rotates 90 degrees, it is either fully open or fully closed.
The working principle of a floating ball valve is based on the rotation of the ball within the valve body. By adjusting the relative position between the ball and the valve seat, the flow of fluid is controlled. Due to its simple structure, good sealing performance, and rapid opening and closing, floating ball valves are widely used in petroleum, chemical, pharmaceutical, and food processing industries.
Structural Features
Simple Structure: Floating ball valves have a relatively simple structure, making them easy to manufacture and maintain.
Good Sealing Performance: The sealing surface material between the ball and the valve seat is of excellent quality, such as hard alloy or PTFE, which is wear-resistant, corrosion-resistant, and provides excellent sealing performance.
Low Fluid Resistance: The ball only needs to rotate 90 degrees in the pipeline to open and close, resulting in low resistance to fluid flow.
Rapid Opening and Closing: Due to the floating characteristic of the ball on the valve seat, opening and closing actions are faster and more flexible.
Multiple Additional Structures: Floating ball valves are typically equipped with locking devices, stem anti-flyaway structures, anti-static devices, fireproof structures, etc., to improve their safety and reliability.
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