How to calculate the flow limitation of a control valve
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A control valve is installed in the DN80 pipeline; the diameters before and after the control valve are DN25. With a water flow velocity of 2.5 m/s, how much water can pass through per hour?
You need to provide the upstream pressure and temperature. Because this operating condition could be a clogged flow due to cavitation, such as in the return valve of boiler feed water.
The diameter reduction is too much; are the process parameters incorrect, or is it due to a special processing method?
How to calculate it? Could you provide the formula?
Just check the table based on the selection of the control valve or flow meter. The formula is quite complex. For a DN25 valve, full opening will handle around ten-odd cubic meters.
Control valves are generally selected by valve manufacturers based on process parameters and other conditions. It is recommended to communicate with the manufacturer first~~~