For a control valve for which you defined multiple cases, you can create a hybrid case from the minimum, normal, and maximum flow coefficient values (Cv/Kv) that you calculated for the various cases. Use this procedure to create such a hybrid case.
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In the Process Data module or in the Calculation module, create multiple cases for the control valve for which you want to create a hybrid case. For details, see Create Process Data Cases.
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Do one of the following to calculate every one of the cases:
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In a Control Valve Calculation window for the given tag, calculate every one of the cases individually.
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Perform a batch calculation procedure to select and calculate all the cases of the given control valve tag.
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In the main window of the Calculation module, select Edit > Hybrid Case.
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On the Select Tag dialog, select Find, and then select the tag for which you want to create a hybrid case.
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On the Hybrid Case dialog, do the following to set values for the hybrid case:
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In the Case selection data window, select the value that you want to copy for the hybrid flow coefficient at minimum, and then select Add Minimum.
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In the Case selection data window, select the value that you want to copy for the hybrid normal flow coefficient, and then select Add Normal.
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In the Case selection data window, select the value that you want to copy for the hybrid flow coefficient at maximum and then select Add Maximum.
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Flow coefficients are displayed dynamically as Cv or Kv, depending on the method of calculation that you set for a given control valve in the Control Valve Calculation dialog.
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The software offers you the flexibility to select any value of a case for any level of the hybrid case — minimum, normal, or maximum.