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Sullair RD Refrigerated Air Dryer

Sullair RD Series
Refrigerated Digital Cycling Compressed Air Dryer


The Sullair Refrigerated Digital (RD) compressed air dryer uses a digital controller to cycle the dryer on and off based on pre-determined dew point settings. By choosing an RD series dryer a significant amount of energy and energy cost can be saved. The RD controller offers many great features such as economy mode on/off capabilities, visability of run time hours, and several monitoring capabilities.

The RD dryer also includes an option for remote monitoring capabilities beyond standard alarm contacts.


  • 400 to 6000 scfm (11.33 to 169.90 m3/min)
  • Maximum Ambient Temperature: 120° F
  • Minimum Ambient Temperature: 40° F
  • Maximum Inlet Temperature: 150° F
  • Maximum Pressure: 230 psig
  • Refrigerant: R134A

  • Energy saving – true green product
  • 3-in-1 heat exchanger
  • High efficiency compressors
  • Globally marketable refrigerant R-134a
  • Standard electronic timer drains for 35 scfm and above
  • Refrigerant analyzer indicator
  • Fan cycle switch
  • Easy removable side panels and parts
  • Consistent dew point performance
  • Low power consumption
  • Low pressure drop
  • Insulated heat exchanger
  • Evaporator with multi-stage separator stainless steel demister
  • High quality fan motors
  • Oversized condenser
  • Optimum dew point levels for the highest system performance
  • Cycling control for increased energy savings
  • Energy efficient scroll compressor
  • Low operating cost
  • Optional communication package
  • Consistent dew point

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