Working Principle
• Open Position: When the valve handle is turned to the open position, the ball rotates, and the hole in the ball aligns with the flow path of the pipeline. This allows fluid to flow through the valve with minimal resistance.
• Closed Position: When the valve handle is rotated to the closed position, the ball rotates to a position where it blocks the flow path. The tight fit between the ball and the seats prevents fluid from passing through, achieving a sealing effect.
Advantages
• Easy Maintenance: The three - piece structure enables easy access to the internal components of the valve. In case of wear or damage, the ball, seats, or other parts can be easily replaced without removing the entire valve from the pipeline, reducing maintenance time and costs.
• Excellent Sealing Performance: The design of the ball and seats provides a reliable sealing function. The ball makes tight contact with the seats, effectively preventing fluid leakage. This is particularly important in applications where high - precision fluid control and no - leakage are required.
• Low Flow Resistance: The spherical design of the valve's internal passage and the smooth surface of the ball result in low flow resistance. Fluid can flow through the valve smoothly, reducing energy consumption and pressure loss in the pipeline system.
• Wide Range of Applications: It can be used in various fluids, including water, oil, gas, and some chemical media. With appropriate material selection, it can adapt to different working conditions, such as high - temperature, high - pressure, or corrosive environments.
In summary, the three - piece screwed ball valve is a high - performance valve with excellent sealing, low - resistance flow, and easy - maintenance features. It is widely used in many industrial and civil fields to meet different fluid control requirements.
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