Pressure independent (PI) valves can help reduce energy costs and increase
occupant comfort. PI control valves are designed to replace the conventional 2 way control valve and balancing valve pair, installed at heating and cooling coils in
buildings. To obtain the most efficient and optimal results in a system, only the necessary amount, no more and no less, of chilled or heated water must be
delivered to the heating and cooling coils at all times. Traditional control valves
allow for over flow and under flow to coils which means excess water is pumped to 10 compensate for their inaccuracy.
The actuators in traditional valves have to cycle more often to compensate for pressure changes in the system that impact the flow. By precisely controlling the flow of water to each coil, the valve enables energy savings, increases available plant capacity, minimizes capital expenses necessary to acquire additional capacity, and simplifies system design and control.