Description
Altec AIR VSA3-21M Heatless Regenerative Desiccant Air Dryer
The VSA Series Heatless Desiccant Air Dryers are one of our longest manufactured, most mature product lines. Its proven design continues to provide solid performance and reliability at point-of-use applications.
VSA Series models list a standard outlet dew point of -40° F/C Pressure Dew Point (PDP), a maximum pressure of 150 PSIG, and a maximum inlet temperature of 120°F / 49°C.
Key Features
- Heatless regenerative desiccant drying: VSA Series point-of-use dryer design (per price guide series description).
- Standard outlet dew point: -40° F/C Pressure Dew Point (PDP).
- Maximum pressure: 150 PSIG.
- Maximum inlet temperature: 120°F / 49°C.
- Rated INLET flow: 8.0 SCFM @ 100 PSIG (INLET flow).
- End connection: 1/4" NPT.
- Operating voltage: 240 VAC, 1 Phase, 60Hz.
- Moisture indicator included: Yes (included).
Specifications
| Model | VSA3-21M |
|---|---|
| Dryer Type | Heatless Regenerative Desiccant Air Dryer |
| INLET Flow (SCFM @ 100 PSIG) | 8.0 SCFM |
| End Connection | 1/4" NPT |
| Operating Voltage | 240 VAC, 1 Phase, 60Hz |
| Moisture Indicator Included | Yes (included) |
| Standard Outlet Dew Point | -40° F/C Pressure Dew Point (PDP) |
| Maximum Pressure | 150 PSIG |
| Maximum Inlet Temperature | 120°F / 49°C |
| Recommended Filter Kit | AD11-VSA14 |
| Dimensions (in) | See VSA Series Specification Sheet |
| Weight | See VSA Series Specification Sheet |
Benefits
- Point-of-use performance: Designed for point-of-use applications per series description.
- Moisture protection: Standard outlet dew point listed at -40° F/C Pressure Dew Point (PDP).
- Defined operating limits: Rated up to 150 PSIG and 120°F / 49°C inlet temperature.
- Clear configuration options: Select 120 VAC or 240 VAC single-phase models; “M” versions include a moisture indicator.
Installation & Application Notes
- Sizing for inlet pressure: INLET flow is listed at 100 PSIG. The price guide provides INLET and PURGE flow factors for sizing at other inlet pressures.
- Do not exceed limits: Maximum pressure 150 PSIG; maximum inlet temperature 120°F / 49°C.
- Dimensions: Refer to the VSA Series Specification Sheet for dimensions and detailed specifications.
The Altec AIR VSA3-21M is a VSA Series heatless regenerative desiccant air dryer rated at 8.0 SCFM @ 100 PSIG with a 1/4" NPT connection and 240 VAC, 1 Phase, 60Hz power configuration.
Frequently Asked Questions
Altec AIR VSA3-21M Heatless Regenerative Desiccant Air Dryer
▶️ Question: What standard outlet dew point is listed for the VSA Series?
Answer: The price guide lists a standard outlet dew point of -40° F/C Pressure Dew Point (PDP).
▶️ Question: What are the maximum pressure and maximum inlet temperature ratings?
Answer: The price guide lists 150 PSIG maximum pressure and 120°F / 49°C maximum inlet temperature.
▶️ Question: What does the “M” in VSA3-21M mean?
Answer: In the pricing table, “M” models are shown with the moisture indicator included; non-M models are shown without a moisture indicator included.
▶️ Question: How do I size a VSA dryer if inlet pressure is not 100 PSIG?
Answer: The price guide provides a multiplier method using INLET and PURGE flow factors by actual pressure to calculate rated outlet flow.
▶️ Question: Where can I find dimensions and detailed specifications?
Answer: The price guide directs users to the VSA Series Specification Sheet for detailed descriptions, specifications, and dimensions.
