Which application has functions similar to Grundfos go balancing and to work with old water pumps? I need to enter the size of the radiator, the size of the room, the diameter of the pipes and the temperatures for each radiator ..+ the flow rate To find flow rate I'm looking to measure the watts being consumed by pump , that’ll tell the head of pressure applied, from that the selected curve will show the flow rate available Is available a software wher is possible to select pump name and wattage and to find flow rate? What other tools are possible to be used in a old system for troubleshooting...?

so if I understand well, you need specific valves to for the proper setup ?