Airport HVAC systems lose cooling capacity because large terminal distribution loops amplify pressure variation that undermines pressure-dependent valve performance. As concourses and gate areas cycle through load, differential pressure fluctuates across the loop — causing some zones to flood while remote terminals starve. Delta T collapses and chiller plants stage unnecessarily, even when installed capacity is sufficient.

As gate areas, concourses, and support spaces cycle through load, differential pressure fluctuates constantly across the loop — causing some zones to flood with excess flow while remote terminals starve. Delta T collapses, chiller plants stage unnecessarily, and facility teams add pumping infrastructure to compensate for a control problem, not a capacity problem.

The scale of the problem at airports is what makes it financially significant. A chilled water loop serving multiple terminals can waste millions in annual energy costs and require hundreds of pumps to maintain distribution pressure — pumps that consume space, maintenance budget, and electrical demand. The DeltaPValve® eliminates the pressure variation at each terminal unit, restoring delta T system-wide and recovering the capacity that was already installed.

At Denver International Airport, removing 170 pumps from the distribution system was not a side benefit — it was a direct consequence of restoring hydraulic control with pressure independent valves.