MHR Series

MHR Series Desiccant
Air Dryers

75 to 3000 SCFM

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Size Your MHR Series Air Dryer

Altec AIR’s MHR Series Heatless Desiccant Air Dryers are our largest capacity regenerative air dryers to meet the needs of the industrial compressed air market.

  • ASME Inspected, Stamped, & CRN Registered Pressure Vessels
  • Fully Re-Pressurizing Design for Steady Outlet Pressure and Flow
  • Solid State Control System for Reliable Operation
  • Dryer Operation Sequence Lights with Fail-to-Shift Alarm Feature
  • Standard NEMA 4X Electrical Rating
  • Consistent ISO 8573.1 Class 2 -40°F/C Standard Outlet Dewpoint
Standard Features:
  • Outlet Dewpoints with 100°F / 38°C Saturated Inlet
    • -40° F/C Pressure Dewpoint (PDP) - Selectable
    • -100°F / -73°C Pressure Dewpoint (PDP) - Selectable
  • Available Input Voltages
    • 115 VAC, 1 Phase, 50/60 Hz
  • Maximum Pressure - 150 PSIG (Standard)
  • Maximum Inlet Temperature - 120°F / 49°C
Optional Features:
  • Econo-Purge Dewpoint Controller
  • H Series Filters:
    • Grade P - Particulate Prefilter
    • Grade C - Oil Removing General Purpose
    • Grade E - Oil Removing High Efficiency
    • Grade A - Oil Removing Absorber
General Specifications:
MHR75 MHR100 MHR125 MHR150 MHR200 MHR250 MHR350
INLET Flow:
(SCFM @ 100 PSIG)		 75 100 125 150 200 250 350
PURGE Flow
(SCFM @ 100 PSIG)		 10.9 14.6 18.2 21.9 29.2 36.5 51.1
OUTLET Flow
(SCFM @ 100 PSIG)		 64.1 85.4 106.8 128.1 170.8 213.5 298.9
Inlet / Outlet Ports
(NPT)		 1" 1-1/2"
MHR520 MHR620 MHR800 MHR1000 MHR1200 MHR1600 MHR2000 MHR3000
INLET Flow:
(SCFM @ 100 PSIG)		 520 620 800 1000 1200 1600 2000 3000
PURGE Flow
(SCFM @ 100 PSIG)		 75.9 90.5 116.8 146.0 175.2 233.6 292.0 438.0
OUTLET Flow
(SCFM @ 100 PSIG)		 444.1 529.5 683.2 854.0 1024.8 1366.4 1708.0 2562.0
Inlet / Outlet Ports
(NPT)		 2" 3"(FLG) 4"(FLG)
Dimensions:
Weight
(lbs)		 Height
(in)		 Width
(in)		 Depth
(in)
MHR75 475 70 31 20
MHR100 590 36
MHR125 560
MHR150 650 40
MHR200 780 90 52
MHR250 950 54
MHR350 1150 96 56 22
MHR520 1500 30
MHR620 1900 65 38
MHR800 2200 72
MHR1000 3700 76 42
MHR1200 6000 92 88 48
MHR1600 6500 116 100 58
MHR2000 7600 118 134 52
MHR3000 9500 140 60
MHR Series Dimensions
Multiplier Table (For INLET Pressures other than 100 PSIG):

Maximum Inlet Flow  =  INLET Flow (above)  x  INLET Flow Factor (A)  x  INLET Temp Factor (C)

Purge Flow  =  INLET Flow (above)  x   PURGE Flow Factor (B)  x  INLET Temp Factor (C)

Rated OUTLET Flow   =   Calculated Maximum Inlet Flow   -   Calculated Purge Flow
Actual Pressure (PSIG) 60 70 80 90 100 110 120 130 140 150 175* 200* 250*
INLET Flow Factor (A) 0.60 0.70 0.80 0.90 1.00 1.09 1.17 1.25 1.30 1.35 1.55 1.70 1.85
PURGE Flow Factor (B) 0.225 0.197 0.175 0.159 0.146 0.135 0.127 0.120 0.116 0.112 0.099 0.091 0.085
Inlet Temp (°F) 80 90 100 110 120
Inlet Temp Factor (C) 1.14 1.13 1.00 0.76 0.67

*These pressures exceed the MHR Standard input.
Please Contact Altec AIR for assistance.

This tool will help you size the perfect MHR Series Desiccant 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 MHR 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 MHR Series Air Dryer perfectly.

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Filter Kit * This Kit meets the minimum
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Filter Kit * This Kit meets the minimum
requirement for Extended Warranty.

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All you need is the required Inlet or Outlet Flow Rate, Operating Pressure, and the required Dewpoint.