Expert, how is the pressure loss of hard-sealed butterfly valves calculated?
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Hello everyone. I need to determine the pressure loss for a hard-sealed butterfly valve. The medium is gas; the pipe diameter, operating pressure, and flow rate at standard conditions are known. How can I calculate the pressure loss when the valve is fully open? Are there any standards or calculation methods available? What are the units for each value in the formula?
Many fluid dynamics resources provide methods for calculating \"local losses.\" Local losses can be estimated initially by looking up a resistance coefficient corresponding to the specific type of loss involved; however, to obtain accurate values, actual testing is likely required
Using the equivalent length method, the pressure loss can be calculated by directly looking up the equivalent length of the butterfly valve in the table
I would like to know too; please give me some guidance, experts!