Description
Tsunami Pure-5 – Pure Series Regenerative Air Dryer, 5 HP / 15 CFM, 120V
15 CFM Regenerative Desiccant Air Dryer | For 5 HP Compressors | Dew Points Down to -80°F | Available with Float or Moisture Minder® Pneumatic Drains
Short Product Description
The Tsunami Pure-5 Regenerative Air Dryer delivers up to 15 CFM of clean, extremely dry compressed air for systems using approximately 5 HP compressors. Featuring integrated two-stage pre-filtration, twin regenerative desiccant towers, 120V operation, and dew points down to -80°F, the Pure-5 is ideal for automotive finishing, paint, pneumatic equipment, manufacturing, woodworking, and other moisture-sensitive compressed air applications. Choose PN 21999-1105 with float drains or PN 21999-1105-MM with Moisture Minder® pneumatic drains.
Full Product Description
The Tsunami Pure-5 Pure Series Regenerative Air Dryer is a compact, wall-mounted compressed air drying system designed to provide exceptionally clean, dry compressed air for shops, production equipment, and dedicated point-of-use applications.
Rated for up to 15 CFM and designed for approximately 5 HP compressor systems, the Pure-5 combines Tsunami's two-stage pre-filtration system with twin regenerative desiccant towers to remove liquid water, oil aerosols, particulates, and water vapor from the compressed air stream.
The Pure-5 can deliver dew points down to -80°F and relative humidity levels as low as 0.01%, making it an excellent solution for applications where moisture can affect paint quality, equipment performance, production processes, or finished products.
Before compressed air reaches the desiccant towers, it passes through an integrated two-stage filtration system:
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First Stage Water Separator: Removes liquid water and particulates down to 10 micron.
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Second Stage Oil Coalescing Filter: Removes bulk oils and aerosols while filtering particulates down to 0.01 micron.
After pre-filtration, the compressed air enters Tsunami's regenerative drying system. One desiccant tower actively dries the compressed air while the second tower is regenerated using a small amount of dry sweep air. Approximately every two minutes, the dryer automatically switches towers, providing a continuous supply of dry compressed air.
The Pure-5 uses approximately 1 CFM of regeneration air, allowing the molecular sieve desiccant to continuously regenerate during normal operation.
Two drain configurations are available:
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PN 21999-1105 – Float Drains: Standard automatic float drain configuration.
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PN 21999-1105-MM – Moisture Minder® Pneumatic Drains: Pneumatically operated drains designed for dependable automatic condensate removal.
Both configurations provide the same 15 CFM drying capacity, dew points down to -80°F, 120V operation, and 175 PSI maximum operating pressure.
Key Features
- 15 CFM maximum air flow
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Designed for approximately 5 HP compressed air systems
- Regenerative desiccant drying technology
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Dew points down to -80°F
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Relative humidity down to 0.01%
- Two regenerative desiccant towers
- Molecular sieve desiccant
- One tower dries while the other regenerates
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Approximately 2-minute drying/regeneration cycle
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Approximately 1 CFM regeneration air consumption
- Integrated two-stage pre-filtration
- First-stage water separator
- Second-stage oil coalescing filter
- Removes liquid water and bulk oil contamination
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Filters particulates down to 0.01 micron
- Solenoid valve timer
- Automatic drain system
- Purge exhaust mufflers
- Available with float or Moisture Minder® pneumatic drains
- 120V electrical power
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Maximum operating pressure of 175 PSI
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Maximum inlet temperature of 150°F
- Compact wall-mounted design
- Wall mounting brackets included
- Few moving parts for simplified operation and maintenance
- Optional heater pads available for cold-temperature applications
Benefits
Provides Extremely Dry Compressed Air
The Pure-5 can provide dew points down to -80°F, making it suitable for applications requiring significantly drier compressed air than a conventional refrigerated air dryer can provide.
Complete Filtration and Drying Package
The Pure-5 includes Tsunami's integrated two-stage pre-filtration system, eliminating the need to separately select a water separator and oil coalescing filter for normal installations.
Continuous Regenerative Drying
The twin-tower design allows one desiccant tower to dry the compressed air while the other regenerates. The dryer automatically alternates between towers approximately every two minutes to provide continuous drying.
Automatic Desiccant Regeneration
Instead of requiring frequent manual desiccant replacement or regeneration, the Pure-5 uses approximately 1 CFM of dry sweep air to regenerate the inactive tower during operation.
Protects the Desiccant
Liquid water, compressor oil, and particulate contamination can shorten desiccant life and reduce dryer performance. Tsunami's integrated water separator and oil coalescing filter remove these contaminants before they reach the dryer towers.
Choice of Automatic Drain Systems
Choose the standard 21999-1105 with float drains or the 21999-1105-MM with Tsunami Moisture Minder® pneumatic drains, depending on your preferred condensate management system.
Compact Wall-Mounted Design
The Pure-5 combines filtration and regenerative drying into a compact wall-mounted package, saving valuable floor space while placing the air treatment system close to the compressor or point of use.
Best For
The Tsunami Pure-5 is an excellent choice for:
- Automotive painting and refinishing
- Paint spray guns
- Spray booths
- Collision and body shops
- Professional coating applications
- Woodworking and finishing
- Small CNC equipment
- Pneumatic instrumentation
- Manufacturing equipment
- Moisture-sensitive pneumatic tools
- Small commercial shops
- Dedicated point-of-use drying
- Compressed air systems using approximately 5 HP compressors
- Applications requiring extremely low dew points
Technical Specifications
| Specification |
PN 21999-1105 |
PN 21999-1105-MM |
| Series |
Tsunami Pure-5 |
Tsunami Pure-5 |
| Maximum Air Flow |
15 CFM |
15 CFM |
| Compressor Size |
5 HP |
5 HP |
| Dryer Type |
Regenerative Desiccant |
Regenerative Desiccant |
| Number of Towers |
2 |
2 |
| Power |
120V |
120V |
| Drain Type |
Float |
Moisture Minder® Pneumatic |
| Inlet Connection |
1/4" NPT |
1/4" NPT |
| Outlet Connection |
1/2" NPT |
1/2" NPT |
| Maximum Pressure |
175 PSI |
175 PSI |
| Maximum Inlet Temperature |
150°F |
150°F |
| Minimum Inlet Pressure |
80 PSI |
80 PSI |
| Minimum Dew Point |
Down to -80°F |
Down to -80°F |
| Regeneration Air Consumption |
Approx. 1 CFM |
Approx. 1 CFM |
| Cycle Time |
Approx. 2 Minutes |
Approx. 2 Minutes |
| Tower Drying Time |
120 Seconds |
120 Seconds |
| Weight |
42 lbs |
42 lbs |
| Dimensions (H × W × D) |
15" × 22" × 8" |
18" × 22" × 8" |
Integrated Two-Stage Pre-Filtration
Every Pure-5 system includes Tsunami pre-filtration consisting of:
Stage 1 – Water Separator
- Removes liquid water
- Filters particulate down to 10 micron
- Automatic condensate drain
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Water Separator: PN 21999-0390
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Replacement Element: PN 21999-0846
Stage 2 – Oil Coalescing Filter
- Removes bulk oils and aerosols
- Filters fine particulate down to 0.01 micron
- Automatic condensate drain
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Oil Coalescing Filter: PN 21999-0390-Z-FD
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Replacement Element: PN 21999-0394
Proper pre-filtration is especially important with regenerative desiccant dryers because liquid water, compressor oil, and particulate contamination can contaminate the desiccant and reduce drying performance.
How the Tsunami Pure-5 Works
Compressed air first enters the integrated water separator, where liquid water and larger particulate contamination are removed.
The air then passes through the oil coalescing filter, which removes bulk oils, aerosols, and fine particulate contamination before the air reaches the regenerative dryer.
Inside the dryer, molecular sieve desiccant adsorbs water vapor that cannot be removed by conventional compressed air filtration.
The Pure-5 contains two desiccant towers. During operation:
- One tower actively dries the compressed air.
-
The second tower uses approximately 1 CFM of dry sweep air to regenerate its desiccant.
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Each tower dries for approximately 120 seconds.
- Approximately every two minutes, the control system switches air flow between the two towers.
- The regenerated tower begins drying while the previously active tower regenerates.
This continuous regeneration process provides consistently dry compressed air without requiring routine manual desiccant regeneration.
Float Drain vs. Moisture Minder® Pneumatic Drain
PN 21999-1105 – Float Drain
The standard Pure-5 uses automatic float-operated drains on the integrated pre-filtration system.
Condensate is discharged automatically as it accumulates within the filter bowls, providing a simple and economical automatic drainage solution.
PN 21999-1105-MM – Moisture Minder® Pneumatic Drain
The 21999-1105-MM configuration uses Tsunami Moisture Minder® pneumatic drains for automatic condensate removal.
The Moisture Minder configuration provides pneumatic condensate drainage without relying on an electrical timer drain and is an excellent choice for users who prefer Tsunami's pneumatic drain system.
Important Sizing Information
The Pure-5 has a maximum rated capacity of 15 CFM and is listed by Tsunami for approximately 5 HP compressor systems.
Tsunami's published dryer flow ratings are based on operating conditions of approximately:
- 100°F inlet air temperature
- 175 PSI inlet pressure
- 100 PSI outlet pressure
- 80 PSI minimum inlet pressure
Lower inlet pressure and higher inlet temperatures can reduce dryer performance and the quality of the downstream compressed air.
The Pure-5 also consumes approximately 1 CFM of compressed air for regeneration, which should be considered when sizing the compressor and dryer for the application.
For best performance and dew point control, the dryer should be sized according to actual compressed air flow, operating pressure, inlet temperature, and available compressor capacity, rather than compressor horsepower alone.
Why Choose the Tsunami Pure-5?
The Tsunami Pure-5 is designed for compressed air applications that require extremely dry air but do not need the capacity or footprint of a large industrial regenerative dryer.
By combining two-stage pre-filtration and regenerative desiccant drying into one compact wall-mounted package, the Pure-5 provides a complete air treatment solution for applications up to 15 CFM.
Its twin-tower design continuously regenerates the desiccant during operation, while the integrated filtration system protects the dryer from liquid water, oil, and particulate contamination.
For users who prefer pneumatic condensate management, the 21999-1105-MM Moisture Minder® version provides pneumatic drains while maintaining the same 15 CFM drying capacity.
Why Buy from Compressed Air Advisors Online?
Compressed Air Advisors Online specializes in compressed air equipment, filtration, and air treatment systems. Proper sizing is especially important with regenerative desiccant dryers because pressure, temperature, air flow, and regeneration-air requirements can significantly affect dryer performance.
If you are unsure whether the Tsunami Pure-5 is the correct dryer for your compressor or application, contact our compressed air specialists. We can help determine the appropriate dryer size and configuration for your compressed air system.
Frequently Asked Questions
How much air can the Tsunami Pure-5 dryer handle?
The Tsunami Pure-5 regenerative air dryer is rated for up to 15 CFM of compressed air and is designed for approximately 5 HP compressor systems.
What dew point can the Tsunami Pure-5 achieve?
Tsunami states that the Pure-5 can provide compressed air with dew points down to -80°F under appropriate operating conditions.
What is the difference between 21999-1105 and 21999-1105-MM?
Both models provide the same 15 CFM drying capacity and use the same twin-tower regenerative drying technology.
PN 21999-1105 uses automatic float drains.
PN 21999-1105-MM uses Tsunami Moisture Minder® pneumatic drains.
Does the Tsunami Pure-5 include pre-filters?
Yes. The Pure-5 includes integrated two-stage pre-filtration consisting of a water separator followed by an oil coalescing filter.
Why does a regenerative desiccant dryer need pre-filtration?
Desiccant removes water vapor but should be protected from liquid water, compressor oil, and particulate contamination. The Pure-5's integrated pre-filtration removes these contaminants before the compressed air reaches the desiccant towers.
How does the Pure-5 regenerate its desiccant?
The Pure-5 contains two desiccant towers. One tower dries compressed air while the second regenerates using dry sweep air. Approximately every two minutes, the dryer switches between the two towers.
How much regeneration air does the Pure-5 use?
The Pure-5 consumes approximately 1 CFM of compressed air during regeneration.
Does the Pure-5 require electricity?
Yes. Both PN 21999-1105 and PN 21999-1105-MM operate on 120V electrical power for the dryer control system.
What size connections are on the Tsunami Pure-5?
Both wall-mounted Pure-5 configurations have a 1/4" NPT inlet and 1/2" NPT outlet.
What is the maximum operating pressure?
The maximum operating pressure is 175 PSI.
What is the minimum inlet pressure?
Tsunami specifies a minimum inlet pressure of 80 PSI for the published Pure-5 performance ratings.
What is the maximum inlet temperature?
The maximum published inlet air temperature is 150°F.
Is the Pure-5 a refrigerated air dryer?
No. The Pure-5 is a regenerative desiccant air dryer. It uses molecular sieve desiccant to remove water vapor and can achieve substantially lower dew points than a typical refrigerated compressed air dryer.
Should I size the Pure-5 based only on compressor horsepower?
No. The 5 HP rating provides a general compressor-size reference. The dryer should ultimately be selected based on actual CFM, operating pressure, inlet temperature, and available compressor capacity. The Pure-5 has a maximum rated flow of 15 CFM and consumes approximately 1 CFM for regeneration.
Replacement & Service Parts
