Ball valve structure

While offering good sealing, the entire load of the working medium on the ball is transferred to the outlet sealing ring. Therefore, it's crucial to consider whether the sealing ring material can withstand the working load of the medium on the ball. Under high pressure impact, the ball may shift. This structure is generally used in medium and low-pressure ball valves.

In a fixed ball valve, the ball remains stationary and does not move under pressure. Fixed ball valves typically have a floating seat. Under medium pressure, the seat moves, pressing the sealing ring tightly against the ball to ensure a seal. Bearings are usually mounted on the upper and lower shafts of the ball, resulting in low operating torque, making them suitable for high-pressure and large-diameter valves.