The TK-TM modular high capacity water-cooled dryers suit large compressed air systems and use digital scroll refrigeration technology to save energy. Flow capacities vary from 1,250 scfm to 12,500 scfm, based on combinations of 2,500 and 1,250 scfm modules. Each module has air-side isolation valves, a cooling water control valve, and cooling water isolation valves, allowing them to be serviced without disrupting the system air flow. Service panels on the top, front and back of each module make maintenance access quick and easy. An electrical disconnect switch makes it possible to safely service one module without de-energizing others.