HR Series

HR Series Desiccant
Air Dryers

3.0 to 50 SCFM

HR Series Heatless Desiccant Air Dryers are the perfect companion to smaller horsepower compressed air systems for providing ultra-dry clean air.

  • 8 Models Available to Match Your Application Requirements and Minimize Energy Loss
  • Spring Loaded Desiccant Beds Help to Extend the Life of the Desiccant Packed in Each Tower
  • Compact Design with Simple, Versatile Mounting and Installation Options
  • Fully Re-Pressurizing Design for Steady Outlet Pressure and Flow
  • Standard NEMA 4X Electrical Rating
  • ISO 8573.1 Class 2 -40°F/C Standard Outlet Dewpoint
Standard Features:
  • Standard Outlet Dewpoint
    • -40° F/C Pressure Dewpoint (PDP)
    • -100°F / -73°C Pressure Dewpoint (PDP)
  • Available Input Voltages
    • 120 VAC
    • 240 VAC
    • 12 VDC
    • 24 VDC
  • Maximum Pressure - 150 PSIG
  • Maximum Inlet Temperature - 120°F / 49°C
Optional Features:
  • Moisture Indicator
  • Tower Pressure Gauges
  • Filtration Kit -
    • 5 Micron and 0.01 Micron Prefilters
    • 0.5 Micron Afterfilter
  • Filter / Regulator Kit
    • Filtration Kit (above)
    • Outlet Regulator & Gauge
  • Floor Stand
General Specifications:
HR1 HR2 HR3 HR4 HR5 HR6 HR6.5 HR7
INLET Flow:
(SCFM @ 100 PSIG)
3.0 6.0 9.0 12.0 16.0 25.0 35.0 50.0
PURGE Flow
(SCFM @ 100 PSIG)
0.8 1.6 2.4 3.2 3.4 5.4 7.8 10.8
OUTLET Flow
(SCFM @ 100 PSIG)
2.2 4.4 6.6 8.8 12.6 19.6 27.2 39.2
Inlet / Outlet Ports
(NPT)
3/8" 1/2"
Dimensions:
Weight
(lbs)
Height
(in)
Width
(in)
Depth
(in)
HR1 8.0 13.6 7.4 5.2
HR2 9.0 18.2
HR3 10.0 17.3
HR4 11.0 21.1
HR5 29.0 33.0 9.5 6.5
HR6 34.0 41.9
HR6.5 59.0 39.3 10.0 7.0
HR7 65.0 46.3
HR Series Dimensions

HR1 - HR4                     HR5 - HR8

Multiplier Table (For INLET Pressures other than 100 PSIG):

Maximum Inlet Flow (-40° F/C PDP) = INLET Flow (above) x INLET Flow Factor (A) @ Actual Pressure (below)

Maximum Inlet Flow (-100°F/-73°C PDP) = INLET Flow (above) x INLET Flow Factor (B) @ Actual Pressure (below)

Purge Flow = PURGE Flow (above) x PURGE Flow Factor (C) @ Actual Pressure (below)

Rated OUTLET Flow = Calculated Maximum Inlet Flow - Calculated Purge Flow

Actual Pressure (PSIG) 50 60 70 80 90 100 110 120 130 140 150
INLET Flow Factor (A) 0.32 0.43 0.55 0.69 0.84 1.00 1.09 1.18 1.26 1.35 1.44
INLET Flow Factor (B) 0.25 0.33 0.43 0.53 0.65 0.75 0.85 0.88 0.95 1.01 1.08
PURGE Flow Factor (C) 0.56 0.65 0.74 0.83 0.91 1.00 1.11 1.18 1.26 1.35 1.43
HR Series Configuration

Need A Custom Sized Air Dryer?

Contact Altec AIR for assistance selecting the right dryer for your application.
All you need is the required dewpoint, operating pressure, and the required inlet or outlet flow rate.