This dialog is used to recommend the valve characteristic for the operating conditions you specify for a control valve.
Valve authority
The valve authority is calculated according to the formula. For the calculation to be performed, open the Additional Properties window by clicking and ensure that System friction loss without C.V. and Pump Drop have suitable values assigned to them.
Critical
Type a suitable value or select Default.
Calculated
A value appears after you select Calculate.
Recommended Valve Characteristic
After you select Calculate, the recommended valve characteristic is displayed, i.e., Linear (if the value of the calculated valve authority is more than the critical value) or Equal% (if the value of the calculated valve authority is less than or equal to the critical value).
Calculate
Calculate the valve authority and specify the recommended valve characteristic.