I would like to ask the experienced colleagues about valve flow rates
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I work in the pump industry. A friend of mine asked about valve flow rates. The parameters I already know are the valve’s nominal pressure, the valve diameter, and the fact that the medium is water. Is it reasonable to use the economic flow velocity multiplied by the cross-sectional area? If not, then how should it be calculated?
Let those who are experts handle expert tasks; let the valve manufacturers deal with valve-related issues
:Lol, mainly I also want to understand the process, as a way of learning*
Flow rate is of course closely related to the pressure difference as well; therefore, you can first estimate a CV value based on the valve diameter (the minimum flow area), and then take into account the pressure difference to calculate the flow rate of the valve under that pressure difference.
Flow rate is related to the cross-sectional area and flow velocity; it’s a simple multiplication relationship. A larger pressure difference results in a higher flow velocity. So if you already know the flow velocity, what’s the need to consider the pressure difference?
The product of flow rate and area is the flow volume – this is basic common sense. I don’t dispute that, and what I said is also correct; it’s just two different methods, but the fundamental principles remain the same.