The right process automation technology can contribute to achieving considerable industrial energy savings.
Not just only importantly control valve, but also includes a pump(or compressor) and plant components, such as piplines, instruments, tanks, etc. to simplest setup of a fluid system for industrial energy.
It is often said that control valves wastefully expend industrial energy, but this is not true. Modern control valve design and sizing methods allow for the use of pumps with smaller head pressure, resulting in less energy absorption via the pressure drop across a control valve.
A better suited pump characteristic with a descreasing pressure p1 at a decreasing flowrate Q would mean a samller pressure drop(p1-p2) across the flowrate. Ideally the pressure drop would be constant across the entire range.