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Regenerative Desiccant Air Dryers

Regenerative Desiccant Air Dryers


HLD-PAK (Heatless Regenerative Air Dryer Package) Ranges from 20-7500 CFM

Air/Tak HLD-PAK Heatless Regenerative Air Dryer Packages are the perfect solution for customers who need clean, dry compressed air in a convenient and easy-to-install package! These high-value HLD-PAK packages offer several advantages:

  • They come complete and ready to install.
  • No costly separate filter installation or additional piping required.
  • Completely equipped with all the features you need to produce clean, dry air.
  • Choose from three different package options to get up and running quickly and efficiently.



  • Heatless Regenerative Air Dryer
  • Coalescing Pre-filter with Automatic Drain Valve
  • Particulate After-filter
  • Differential Pressure Indicators or Gauges on both Filters


  • Three-Valve Bypass
  • Visual Moisture Indicator


  • Flex Power Purge System
  • High Humidity Warning Light
  • Fail-to-Switch Warning Light
  • Three-Valve Bypass


AIR/TAK “HLD” dryers deliver a continuous supply of super dry compressed air to downstream point of use. They employ the fundamental and dynamic relationship between desiccant adsorption and regeneration in a twin tower design. 

Small Heatless Regenerative Dryers are the perfect choice when smaller flow rates are needed or for point of use application such as instrumentation, auto body work, painting or powder coating.



  • On/Off Switch • Tower Indicator Lights
  • Purge Adjustment Valve
  • Purge Control Pressure Gauge • Purge Control Valve(s)
  • Purge Exhaust Muffler(s) • Tower Pressure Gauges
  • Tower Pressure Relief Valves • Check Valves
  • 4-Way Automatic Switching Valve*
  • Pneumatically Actuated Switching Valves**
  • Pilot Control Valve**
  • Pilot Control Air Filter** 
  • Pilot Air Switching Valves**
  • ASME Coded Vessels***
  • Activated Alumina Desiccant
  • Desiccant Fill and Drain Ports
  • Stainless Steel Air Diffuser Screens
  • NEMA 4 Enclosure
  • Solid State Timer
  • 115-1-60 Control Circuit
  • Structural Steel Frame



AIR/TAK recommends a coalescing prefilter (Grade C) to protect the desiccant against damage from liquid oil and water as well as solid contaminants. A particulate afterfilter (Grade P), which removes any desiccant dust from the outlet air, is recommended to protect downstream equipment.  AIR/TAK offers a full range of coalescing and particulate filters to help protect your equipment investment.  

  • Flex Power Purge System 
  • High Humidity Warning Light
  • Fail-to-Switch Warning light
  • Audible Alarm
  • Moisture Indicator
  • PAKs 
  • Pre-filter (recommended)
  • After-filter (recommended)
  • Bypass Piping
  • Voltages: 110-50-1, 230-60-1, 12 & 24 VDC
  • NEMA 7
  • High Pressure Models 
  • Min. Working Pressure: …….. 70 PSIG
  • Max. Working Pressure: …… 150 PSIG
  • Max. Inlet Temperature: ………… 120°F
  • Dryer Vessels: ASME Code, Section VIII and latest addenda (200-6250 SCFM)
  • Exterior Finish: ……Industrial Enamel
  • Standard Purge Rate: …………….14.7%


Compact Size, High-Performance

Small Heatless Regenerative Air Dryers

Precision Timing Ensures Constant

Supply of Clean, Dry Compressed Air


Model SHLD-25

Air/Tak Small Heatless Regenerative Air Dryers are the perfect choice when smaller flow rates are needed or for point-of-use applications such as instrumentation, auto body work, painting or powder coating.  Compact and durable in construction, these small dryers are high performance, field-proven units.



  • Switching Valves
  • Electric Timer
  • Purge Valves
  • Shuttle Valves
  • Six-foot Power Cord
  • Tower Pressure Gauges
  • Purge Mufflers
  • Moisture Indicator
  • Desiccant-packed Towers
  • Purge Adjustment Screw 
  • Inlet Air Pressure: …. 60 PSIG (min.)  to 150 PSIG (max.)
  • Multiple Ports: .. 3 Inlet and 3 Outlet ports for a variety of piping options
  • Port Size: ………………. 1/2 – 14 NPTF
  • Outlet Pressure Dew Point: …..-40°F
  • Power Consumption: ………10 Watts
  • Enclosure: ………………………. NEMA 1
  • Voltage: …………………………. 115-60-1
  • NEMA 7
  • Voltages: 100-50-1, 230-60-1, 240/220-50-1, 12 & 24 VDC
  • Basic Unit (without inlet pressure gauges and moisture indicator.) ……………………………………  Model SHLD-25
  • Provide Constant -40°F Pressure Dew Point to Maintain Super Dry   Conditions
  • Engineered to Deliver Continuous Supply of Dry Air
  • Operate Automatically with Precision Timing System
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  • Returns

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    Full Return Policy 
  • Our Value

    Buckeye Air specializes in Compressed Air Systems for Industries, Businesses, and Individuals. We provide Quality Equipment for businesses that demand the Best. Our Company represents some of the finest Compressed Air Equipment manufactured in the world today.