What are the steps to determine the valve diameter?
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- Determine the calculated flow rate (max and min).
- Determine the calculated pressure difference - select the resistance ratio value according to the characteristics of the system, and then determine the pressure difference (valve is fully open).
- Calculate the flow coefficient - select the appropriate calculation formula chart or software to find the max and min of KV.
- KV value selection.
- Check the opening degree.
- Actual adjustable ratio.
- Determine the valve diameter - if unqualified, re-select KV value, and then verify.