HOF Series Oil Field
Heatless Regenerative Desiccant Air Dryers
15 to 800 SCFM
With their standard rugged design features, Altec AIR’s HOF Series Heatless Oil Field Air Dryers provide clean, dry compressed air, resulting in improved air system operation with unparalleled reliability and safety in an often unforgiving environment.
- ISO 8573.1 Class 2 -40°F/C Standard Outlet Dewpoint
- Down to -58°F/-50°C Possible in Low Dew Point Mode - Factory installed Filters
- Separate Re-Pressurization Circuit (HOF-0100 - HOF-0800)
- ASME /CRN Pressure Vessels (HOF-0100 - HOF-0800)
- Feature Rich ETL Listed Pro-Logic Controller w/ NEMA 4 Enclosure
- Regulated Control Air & Adjustable Purge
| Standard Features: |
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| Optional Features: | |
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| General Specifications: | |||||||
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| INLET Flow: (SCFM @ 100 PSIG) |
Inlet / Outlet Ports (NPT) |
Approx. Purge (SCFM @ 100 SCFM) |
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| HOF-0015-1 | 15 | 1/2" | 2.3 | ||||
| HOF-0025-1 | 25 | 3.8 | |||||
| HOF-0040-1 | 40 | 6.0 | |||||
| HOF-0075-1 | 75 | 1" | 11.3 | ||||
| HOF-0100-1 | 100 | 15.0 | |||||
| HOF-0125-1 | 125 | 18.8 | |||||
| HOF-0200-1 | 200 | 1-1/2" | 30.0 | ||||
| HOF-0250-1 | 250 | 37.5 | |||||
| HOF-0300-1 | 300 | 45.0 | |||||
| HOF-0400-1 | 400 | 2" | 60.0 | ||||
| HOF-0500-1 | 500 | 75.0 | |||||
| HOF-0600-1 | 600 | 90.0 | |||||
| HOF-0800-1 | 800 | 120.0 | |||||
Sizing based on the Compressed Air and Gas Institute CAGI ADF 200 Standard for compressed air of 100 PSIG inlet pressure, 100°F inlet temperature, and -40°F/C pressure dew point providing ISO Quality to standard 8573-1 rating 1-2-1 for Compressed Air Quality.
| Dimensions: | ||||
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| Weight (lbs) |
Height (in) |
Width (in) |
Depth (in) |
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| HOF-0015-1 | 175 | 52 | 22 | 14 |
| HOF-0025-1 | 200 | |||
| HOF-0040-1 | 355 | 59 | 25 | 18 |
| HOF-0075-1 | 440 | 78 | 24 | 32 |
| HOF-0100-1 | 455 | |||
| HOF-0125-1 | 485 | |||
| HOF-0200-1 | 690 | 80 | 29 | |
| HOF-0250-1 | 780 | 89 | ||
| HOF-0300-1 | 830 | |||
| HOF-0400-1 | 1040 | 91 | 32 | 36 |
| HOF-0500-1 | 1270 | 92 | ||
| HOF-0600-1 | 1450 | |||
| HOF-0800-1 | 1690 | 39 | 38 | |
HOF Series Drying Process
Compressed air, saturated with water vapor, flows upward through the Online (Drying) Tower. The water molecules adhere to the porous surface of the Desiccant, where the residual water content of the compressed air is lowered to a Pressure Dew Point (PDP) of -40°F or lower. Concurrently, some of this dry air (15%) is directed downward through the depressurized Offline Tower in a process referred to as Regeneration. This dry air sweep desorbs water molecules from the surface of the Desiccant and is exhausted to atmosphere, preparing that Tower for its next Online cycle. This process is known as Pressure Swing Adsorption (PSA) and is typically completed in a fixed 10-minute NEMA cycle, with the Towers alternating between Drying & Regenerating, typically every 5 minutes.
This tool will help you size the perfect HOF 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 HOF 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 HOF Series Air Dryer perfectly.
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Need A Custom Sized Air Dryer?
Contact Altec AIR for assistance selecting the right dryer for your application.
All you need is the required Inlet or Outlet Flow Rate, Operating Pressure, and the required Dew Point.