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Special Seat and Seal Design: V-port ball valves（segment ball valve）typically have specially designed seats and seal structures that can effectively cut and clear particles in the media. This reduces the impact of particles on the seal and lowers the risk of leakage.
Knife gate valves are challenging to achieve zero leakage in practical applications. While knife gate valves can provide good sealing performance when closed, there may be minor leaks due to contact surfaces and clearances between the blade and the seat, as well as the connection between the blade and the valve body.
Streamlined Flow Path: V-port valves feature a V-shaped design in their flow path, allowing for smooth fluid flow, reduced resistance, and lower energy consumption.