Dessicant Dryers Dew Points to -100'F

CDH Series heatless/pressure-swing, twin tower desiccant dryers produce consistent outlet pressure dew points down to -100F (-73C) for ultra-dry air.

CDH Minimum Purge Air Used, Quiet Operation
By saving the heat of adsorption, our design maximizes the purge air’s ability to carry off moisture in a counterflow arrangement. Our base mounted models use only 13.7% PURGE AIR, the lowest in the industry. All units come with heavy duty purge exhaust mufflers.

Long Life Activated Alumina Desiccant
Large bed size along with slow and complete regeneration of off-line tower prevents fluidization, desiccant movement and deterioration. This ensures maximum desiccant life. Activated alumina also has high crush strength and is abrasion resistant.

Easy to Maintain
Separate fill and drain ports are conveniently located for easy desiccant replacement. Stainless steel support screens and flow diffusers protect dryer control valves from contaminants and prevents channeling. Easily removed for cleaning.

CDHL Series Purge Economizer Control
Solid state control maintains precise 10 minute cycles to achieve pressure dewpoints of -40F (-40C). Unit is also manually adjustable for 4 minute cycles if -100F (-73C) dewpoints are required. Off-line tower fully repressurizes before going on-line preventing downstream pressure loss.

CDHT Series Thermosave Energy Saving Purge Control
Microprocessor automatically matches purge air usage to dryer load capacity for additional energy savings. Device monitors changes in desiccant bed temperature. Example: at 50% dryer load, only 50% of normal purge air is used and a tower is able to stay on-line for 10 minutes instead of the usual 5. Temperature sensors require no calibration.