Four-Way Ball Valve features a unique ball with two perpendicular L-shaped bores. A single 90-degree rotation of the ball changes the flow path configuration between its four ports, typically switching between cross-flow (port 1 to 3 & 2 to 4) and straight-flow (port 1 to 2 & 3 to 4) patterns. It is widely used for flow diversion, system reversal, or equipment alternation in applications like HVAC reversing valves, chemical reactor switching, and lubrication systems.
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