RHT Series

RHT Series
High Inlet Temperature Refrigerated Air Dryers

10 to 120 SCFM

Altec AIR’s RHT Series High Inlet Temperature Refrigerated Air Dryers are designed to be used with tank mounted pistontype air compressors that have no after-coolers.

  • Does not require Separate After Coolers, Separators, or Drains
  • Hight Inlet Temperature - Up to 200°F
  • Consistent & Reliable Dry Air - ISO Class 6
  • Compact All-Aluminum Heat Exchanger Modules with Low Pressure Drops
  • Programmable Automatic Electronic Drains
  • Easy-Access Cabinet Design for Ease of Maintenance & Serviceability
  • Top Mounted Inlet & Outlet Connections Allow for Easy Installation of Dryer, Filters, & Bypass Valves
  • ETL Listed Configurations (Pending)
Standard Features:
  • Available Input Voltages*
    • 115 VAC, 1 Phase, 60Hz
    • 208-230 VAC, 1 Phase, 60Hz
    • 230 VAC, 3 Phase, 60Hz
    • 460 VAC, 3 Phase, 60Hz
    • 575 VAC, 3 Phase, 60Hz
  • Maximum Pressure - 232 PSIG
  • Maximum Inlet Temperature - 200°F / 93°C

*NOTE: Voltage options are dependent on specific models.
Contact Us for details.

Optional Features:
  • Installed Filter Kits
  • Filter Bypass Kits
  • Floor Stands
  • Magnetic Condenser Filters
General Specifications:
RHT-0010 RHT-0015 RHT-0020 RHT-0030 RHT-0040
(SCFM @ 175 PSIG)
10 15 20 30 40
Inlet / Outlet Ports
1/2" 1"
Drain Port
Refrigerant Type R134a
RHT-0060 RHT-0080 RHT-0100 RHT-0120
(SCFM @ 175 PSIG)
60 80 100 120
Inlet / Outlet Ports
1-1/2" 2"
Drain Port
Refrigerant Type R134a R404a

** Sizing based on Inlet Temperature of 180°F, Inlet Dew Point of 160°F, Inlet Pressure of 175 PSIG, Outlet Dew Point of 50°F

RHT-0025A 92 23.9 18.9 16.9
RHT-0040A 102
RHT-0075A 160 25.8 18.4 27.6
RHT-0100A 173
RHT-0150A 192 29.3 21.9 34.1
RHT-0200A 205 - 225
RHT-0250A 300 - 331 35.8 23.7 34.8
RHT-0300A 300-345
RHT Series Dimensions
**Multiplier Tables (Sizing Dryers for Variable Conditions):
Corrected Inlet Flow Capacity =
INLET Flow (above) x Inlet Pressure
Correction Factor
x Inlet Temp
Correction Factor
x Ambient Temp
Correction Factor
Actual Pressure (PSIG) 100 125 150 175 200
Correction Factor (A) 0.80 0.88 0.95 1.00 1.04
Inlet Temp (°F) 100 125 150 180 200
Correction Factor (B) 3.31 1.99 1.30 1.00 0.91
Ambient Temp (°F) 80 90 100 110 120
Correction Factor (C) 1.08 1.06 1.00 0.90 0.76

Refrigeration Air Drying Process

Altec AIR Refrigerated Air Dryers use refrigeration cooling to condense moisture and remove it from a compressed air system.

  • Warm saturated air enters a pre-cooler/re-heater heat exchanger at the dryer inlet and is pre-cooled by outgoing cold air.
  • The pre-cooled air then enters the air to refrigerant heat exchanger and is cooled to its lowest point.
  • As the air is cooled, the moisture it contains changes from a vapor to a liquid and is removed by a stainless-steel mesh separator and discharged from the dryer through an automatic drain valve.
  • The cold air is then re-heated by incoming warm air as it passes back through the pre-cooler/re-heater.
  • The resulting warm air that exits the dryer is clean, dry and ready for use by a compressed air system.

This tool will help you size the perfect RHT Series Non-Cycling Refrigerated Air Dryer for your Compressor Output and Environmental Conditions. Simply enter the data & conditions and you'll be presented with the Part Number for the RHT Series Air Dryer that will work optimally for those conditions. We will also provide Part Numbers for the Filter Kits that were created to match that RHT Series Air Dryer perfectly.

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