Control Valve – Characterizing Valves

Cage-Guided Valves – In a cage-guided valve, the flow characteristic is determined by the shape of the cage windows, or openings. Figure 41 illustrates the cage window shapes for the three flow characteristics that were previously described.

Post-Guided Valves – For post-guided valves, flow characteristics are determined by the contours of the valve plug, as shown in Figure 42.

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