FS-Curtis DA Series
FS-Curtis DA Series desiccant air dryers — heatless regenerative desiccant configurations sized for shop through small industrial compressed air systems. DA Series delivers ultra-low dew points (typically minus 40 degrees F standard, minus 70 degrees F optional) using cycling twin-tower desiccant beds with compressed-air purge regeneration. Suited for paint booth air, instrument air, and any moisture-sensitive downstream application. Alamo Equipment is an authorized FS-Curtis dealer with sizing consultation and parts availability nationwide.
FS-Curtis DA Series FAQs
DA is a line of modular desiccant air dryers, supplied as modules in electric and pneumatic control variants. Modular construction lets capacity be built up from standard modules rather than specifying one large fixed unit.
The E designation indicates electric controls and the P indicates pneumatic controls. Pneumatic control suits locations where electrical supply is inconvenient or where a non-electric solution is preferred; electric control generally offers more monitoring and integration options.
When air lines run through spaces that can fall below a refrigerated dryer's dew point, or when the application requires substantially drier air than refrigerated drying reaches. Refrigerated drying is adequate for general shop air at normal indoor temperature.
Capacity can be matched more closely to demand and expanded later by adding modules, rather than replacing a single fixed-capacity dryer. It also simplifies service, since a module can be worked on without taking the entire drying system apart.
Most desiccant designs use some portion of the dried air to regenerate the offline tower. That purge air is a real operating cost and must be included when sizing the compressor. Confirm the purge rate for the specific configuration when sizing the system.
The desiccant media has a finite service life and must be replaced on a schedule. Valves, controls, and the prefilter also need periodic attention. Oil carryover from the compressor will contaminate and destroy desiccant media, so upstream coalescing filtration is essential, not optional.
A coalescing filter upstream to protect the desiccant from oil, and a particulate filter downstream to catch desiccant fines before they reach the tools. Skipping the upstream coalescer is the most common cause of premature desiccant failure.