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A floating ball valve has a ball that is not fixed but "floats" between the two seats, creating a tight seal. The pressure from the upstream flow forces the ball against the downstream seat, providing a reliable seal. This design is more suitable for lower pressure and smaller size applications. It is commonly used in water, oil, and gas pipelines.
A trunnion mounted ball valve is designed for larger sizes and higher pressure applications. It uses a ball with a trunnion (support pin) to reduce the load on the valve seat and ensure smooth operation. This design provides excellent sealing performance, even under high pressures and varying flow conditions. They are widely used in industries such as oil and gas, power generation, and chemical
