I want to approximate the volume flow going through heating/cooling units, but all I have are valve openings (unit=%). Since the valve does not have a linear relationship between its opening and its volume flow, I will have to approximate it based on standard values.
The datasheet specifies "Equal percentage flow control is ensured by the special design of the ball."
I do have the maximum volume flow powered by the pump (at 100% valve opening). Since, to my understanding, valves are designed that way to create linear relationships between valve opening and heat transfer of the downstream heat transfer unit, I assume that there are "standardised" valve characteristics and approximating the volume flow based on the valve opening is possible. But how?