VSA Series

VSA Series Desiccant
Air Dryers

2.8 to 12.0 SCFM

The VSA Series Heatless Desiccant Air Dryers are one of our longest running, mature product lines. Its proven design continues to provide solid performance and reliability at point-of-use applications.

  • 4 Models Available to Match Your Application Requirements and Minimize Energy Loss
  • Solid-State Timer with Built-In Memory Ensures Reliable Drying Cycles
  • Fixed Orifice Purge Control for Consistent Ultra-Dry Outlet Conditions
  • Dual Inlet & Outlet Port Configurations Allows for Custom, Easy Installation
  • -40°F/C Standard Outlet Dewpoint
    (ISO 8573.1 Class 2)
Standard Features:
  • Standard Outlet Dewpoint
    • -40° F/C Pressure Dewpoint (PDP)
  • Available Input Voltages
    • 120 VAC
    • 240 VAC
  • Maximum Pressure - 150 PSIG
  • Maximum Inlet Temperature - 120°F / 49°C
Optional Features:
  • Moisture Indicator
  • Filtration Kit -
    • 5 Micron and 0.01 Micron Prefilters
    • 0.5 Micron Afterfilter
  • Filter / Regulator Kit
    • Filtration Kit (above)
    • Outlet Regulator & Gauge
General Specifications:
VSA1 VSA2 VSA3 VSA4
INLET Flow:
(SCFM @ 100 PSIG)
2.8 5.8 8.0 12.0
PURGE Flow
(SCFM @ 100 PSIG)
0.8 1.7 2.5 3.2
OUTLET Flow
(SCFM @ 100 PSIG)
2.0 4.1 5.5 8.8
Inlet / Outlet Ports
(NPT)
1/4"
Dimensions:
Weight
(lbs)
Height
(in)
Width
(in)
Depth
(in)
VSA1 7.0 10.1 8.0 4.8
VSA2 8.0 13.1
VSA3 9.0 16.1
VSA4 14.0 24.1
VSA Series Dimensions
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)

Purge Flow = PURGE Flow (above) x PURGE Flow Factor (B) @ 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 0.56 0.70 0.85 1.00 1.09 1.17 1.26 1.35 1.44
PURGE Flow Factor (B) 0.57 0.65 0.74 0.83 0.91 1.00 1.09 1.18 1.26 1.35 1.44
VSA 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.