The pressure drop issue of valves
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How is the pressure drop before and after a valve calculated? What values are needed to calculate it?
Oh, I don’t quite understand. Let me ask our technician for you. Sorry, could you give it a boost?
The pressure loss is calculated using the resistance coefficient of the valve; that is the pressure drop you need
How to calculate it? Looking for a solution? Studying*?
△H=ηV2/2g formula for calculating pressure drop in process valves
It is generally converted into equivalent length; this is specified in the manuals for calculating pressure drops
The resistance of common valves can be found in tables; for special control valves, the pressure difference requirements must be specified first in the process design, and instrumentation should be selected to meet those process requirements.