Thanks JLSeagull but wwhat about below 10% of the valves travel? It is about dual valve high load - low load arrangement application.
Lets say that we have two control valves with linear characteristic, one with metal to metal sealing and one with soft sealing. It is assumed that soft sealing...
Sorry I missed the point that all the chillers have different sizes. With this fact and a fact that the pumps are headed you have very demanding installation. Flows through the chillers should be dynamically balanced with automatic balancing valves equipped with modulating actuator. Valves...
From hydronic point of view,you should consider following points: How are the pumps configured; are they dedicated (1 chiller 1 pump) or headered? Are all chillers equaly sized? How is bypass line and bypass control valve designed? Is flow meter in use and where it is located?
What is typical control ratio of a control valve for HVAC application with metal to metal sealing? I understand that a control valve with metal to metal sealing should have higher range ability compared to the one with soft sealing.
