Description

Tsunami High Temperature Pure-5 – Regenerative Desiccant Dryer System, 5 HP / 15 CFM, 120V, PN: 21999-1255

15 CFM High-Temperature Regenerative Desiccant Dryer | For 5 HP Compressors | Handles Inlet Air Up to 300°F | Integrated Aftercooler & Pre-Filtration | Dew Points Down to -40°F

Short Product Description

The Tsunami High Temperature Pure-5 Regenerative Dryer System, PN 21999-1255, is an all-in-one compressed air treatment package designed for hot, humid air from approximately 5 HP compressor systems. Rated for 15 CFM and inlet temperatures up to 300°F, it combines a 50 CFM aftercooler, two-stage pre-filtration, and twin-tower regenerative desiccant drying to provide dew points down to -40°F. Its compact wall-mounted design makes it ideal for spray foam rigs, automotive refinishing, mobile applications, wheel resurfacing, and small shops.

Full Product Description

The Tsunami High Temperature Pure-5 Regenerative Dryer System is engineered specifically for applications where hot compressor discharge air makes conventional compressed air drying difficult.

Rated for up to 15 CFM and approximately 5 HP compressor systems, PN 21999-1255 combines three critical air-treatment stages into one ready-to-install package:

• A 50 CFM air-cooled aftercooler
• Integrated two-stage pre-filtration
• Twin-tower regenerative desiccant drying

This integrated design allows compressed air with inlet temperatures as high as 300°F to be cooled, filtered, and dried before reaching downstream equipment.

The first stage is the air-cooled aftercooler. Hot compressed air leaving the compressor passes through the aftercooler, which lowers the air temperature to approximately 5°F to 20°F above ambient temperature. Cooling the air causes a large portion of the water vapor to condense into liquid, allowing the system to remove up to 75% of the incoming moisture load before the air reaches the regenerative dryer.

The cooled compressed air then passes through the integrated two-stage pre-filtration system. A water separator removes condensed liquid water and larger particulate contamination, followed by an oil coalescing filter that removes oil aerosols and fine particulates.

Once cooled and properly filtered, the air enters Tsunami's twin-tower regenerative desiccant dryer. One molecular sieve desiccant tower actively removes water vapor while the second tower regenerates using dry sweep air. The system automatically switches between towers approximately every two minutes for continuous drying.

The High Temperature Pure-5 can provide dew points down to -40°F and relative humidity down to approximately 0.01% RH under proper operating conditions.

Unlike the standard Pure-5, which is intended for already cooled compressed air, the 21999-1255 is designed as a complete high-temperature system capable of accepting compressor discharge air temperatures up to 300°F.

Key Features

• 15 CFM maximum air flow
• Designed for approximately 5 HP compressor systems
• Handles compressed air inlet temperatures up to 300°F
• Integrated 50 CFM air-cooled aftercooler
• Aftercooler lowers air temperature to approximately 5°F–20°F above ambient
• Condenses up to 75% of incoming water vapor
• Less than 1 PSI aftercooler pressure drop
• Integrated two-stage pre-filtration
• First-stage water separator
• Second-stage oil coalescing filter
• Twin-tower regenerative desiccant dryer
• Molecular sieve desiccant
• Dew points down to -40°F
• Relative humidity down to approximately 0.01% RH
• Approximately 1 CFM regeneration air consumption
• Approximately 2-minute regeneration cycle
• 120-second tower drying time
• Automatic float condensate drains
• Purge exhaust mufflers
• 120 VAC power
• Two electrical power cords
• Maximum operating pressure of 175 PSI
• 3/4" NPT inlet
• 1/2" NPT outlet
• Compact wall-mounted design
• Designed for mobile and small-flow applications
• Simple all-in-one installation

Benefits

Handles Compressor Discharge Air Up to 300°F

The defining advantage of the High Temperature Pure-5 is its ability to accept compressed air at temperatures up to 300°F.

Instead of requiring a separately selected and installed aftercooler ahead of the dryer, Tsunami integrates the cooling equipment directly into the system.

Integrated Aftercooler Removes Heat and Moisture

The included air-cooled aftercooler reduces compressed air temperature to approximately 5°F to 20°F above ambient.

As the compressed air cools, water vapor condenses into liquid, allowing the aftercooler and filtration system to remove a large portion of the moisture before it reaches the desiccant dryer.

Dew Points Down to -40°F

After cooling and pre-filtration, the regenerative desiccant dryer removes the remaining water vapor and can provide dew points down to -40°F.

This provides significantly drier compressed air than a typical refrigerated air dryer while accommodating much hotter incoming air.

True All-in-One Air Treatment System

The 21999-1255 combines:

• Aftercooling
• Bulk moisture removal
• Water separation
• Oil coalescing filtration
• Fine particulate filtration
• Regenerative desiccant drying
• Automatic condensate drainage

into one integrated package.

Continuous Regenerative Drying

The twin-tower dryer allows one tower to actively dry compressed air while the second regenerates.

Approximately every two minutes, the dryer switches towers automatically, allowing continuous drying without manually regenerating the desiccant.

Protects the Desiccant

High-temperature compressed air can contain a significant moisture load.

Cooling the air and removing condensed moisture, oils, and particulates before the regenerative towers greatly reduces the load placed on the molecular sieve desiccant.

Wall-Mounted Design Saves Floor Space

The complete aftercooler, filtration, and drying package is designed for wall mounting, making it particularly useful in trailers, mobile rigs, compact mechanical spaces, and smaller shops where floor space is limited.

Designed for Mobile Applications

The High Temperature Pure Series is specifically designed for mobile and vehicle-mounted applications where equipment must tolerate transportation, vibration, and changing operating conditions.

Best For

The Tsunami High Temperature Pure-5 is an excellent choice for:

• Spray foam rigs
• Spray foam insulation equipment
• Automotive painting and refinishing
• Mobile paint refinishing
• Wheel resurfacing
• Mobile service vehicles
• Equipment trailers
• Small shops
• Professional coating applications
• Hot compressor discharge applications
• Point-of-use compressed air drying
• Approximately 5 HP compressor systems
• Applications without a separate aftercooler
• Applications requiring very dry air from high-temperature compressor discharge

Technical Specifications

Integrated High-Temperature Air Treatment

The 21999-1255 treats compressed air in three primary stages.

Stage 1 – Air-Cooled Aftercooler

Hot compressed air first enters the integrated 50 CFM aftercooler.

The aftercooler:

• Accepts inlet temperatures up to 300°F
• Lowers compressed air temperature to approximately 5°F–20°F above ambient
• Condenses up to 75% of incoming water vapor
• Has less than 1 PSI pressure drop
• Reduces the moisture load placed on the downstream filtration and dryer

Cooling compressed air before filtration is critical because water vapor must first condense into liquid before a water separator can effectively remove it.

Stage 2 – Two-Stage Pre-Filtration

After cooling, the compressed air passes through two filtration stages.

Water Separator

• Water Separator: PN 21999-0390
• Removes liquid water
• Filters particulate down to 10 micron
• Automatic float drain
• Replacement Element: PN 21999-0846

Oil Coalescing Filter

• Oil Coalescing Filter: PN 21999-0390-Z-FD
• Removes bulk oils and aerosols
• Filters particulate down to 0.01 micron
• Automatic float drain
• Replacement Element: PN 21999-0394

These filters protect the regenerative desiccant from condensed water, compressor oil, and particulate contamination.

Stage 3 – Regenerative Desiccant Dryer

Once the compressed air has been cooled and filtered, it enters the twin-tower regenerative dryer.

Molecular sieve desiccant removes the remaining water vapor, allowing the system to provide dew points down to approximately -40°F.

How the Tsunami High Temperature Pure-5 Works

The High Temperature Pure-5 uses a three-step process to turn hot, moisture-laden compressed air into clean, dry air.

1. Hot compressed air enters the aftercooler.
2. The aftercooler lowers the air temperature toward ambient, causing water vapor to condense.
3. The water separator removes bulk liquid condensate.
4. The oil coalescing filter removes compressor oil, aerosols, and fine particulate contamination.
5. Properly cooled and filtered air enters the regenerative dryer.
6. One molecular sieve tower removes water vapor from the compressed air.
7. The second tower regenerates using approximately 1 CFM of dry sweep air.
8. Approximately every 120 seconds, the dryer switches towers.
9. The regenerated tower begins drying while the previously active tower regenerates.

This integrated process allows the dryer to efficiently handle high-temperature compressor discharge without requiring separate aftercooling and filtration equipment.

Why High Inlet Temperature Matters

Hot compressed air can hold significantly more water vapor than cool compressed air.

If that hot air is sent directly into a desiccant dryer, the desiccant must deal with both the high temperature and a much greater moisture load. This can reduce drying performance and increase demand on the desiccant.

The 21999-1255 solves this problem by cooling the compressed air before it reaches the pre-filters and regenerative dryer.

As the air cools, moisture condenses into liquid where it can be efficiently removed by the water separator.

High Temperature Pure-5 vs. Standard Pure-5

Although both models are rated for approximately 15 CFM / 5 HP, they are designed for different inlet conditions.

Choose the High Temperature Pure-5 when compressed air is coming directly from a hot compressor discharge or when a suitable aftercooler is not already installed.

The standard Pure-5 may be more appropriate when the compressed air is already adequately cooled before entering the dryer.

High Temperature Regenerative vs. Refrigerated Air Dryer

A conventional refrigerated air dryer works very well in many stationary compressed air systems, but refrigerated dryers normally have limits on how hot the incoming compressed air can be.

The Tsunami High Temperature Pure-5 takes a different approach.

Instead of relying on refrigeration alone, it combines an air-cooled aftercooler, moisture separation, oil coalescing filtration, and regenerative desiccant drying.

This makes it particularly useful for:

• Mobile installations
• Hot compressor discharge
• Applications with limited floor space
• Environments where a traditional refrigerated dryer may be difficult to install
• Applications requiring lower dew points than a typical refrigerated dryer

Important Sizing Information

The High Temperature Pure-5 has a maximum rated flow of 15 CFM.

Tsunami's published dryer flow ratings are based on approximately:

• 100°F dryer inlet temperature after cooling
• 175 PSI inlet pressure
• 100 PSI outlet pressure
• 80 PSI minimum inlet pressure

The system can accept compressed air entering the integrated aftercooler at temperatures up to 300°F.

Lower operating pressure, higher temperatures, and increased airflow can affect downstream dew point and dryer performance.

The regenerative dryer also consumes approximately 1 CFM of compressed air during regeneration, which should be considered when determining the total compressor capacity required by the application.

Why Choose the Tsunami High Temperature Pure-5?

The Tsunami High Temperature Pure-5 solves a common compressed air problem: how to effectively dry extremely hot compressor discharge air in a compact package.

Rather than requiring the customer to separately size and install an aftercooler, water separator, coalescing filter, and regenerative dryer, Tsunami packages these components together into one system.

For spray foam rigs, mobile paint operations, trailers, small shops, and other high-temperature compressed air applications, the 21999-1255 provides a complete 15 CFM air treatment solution designed to handle inlet temperatures up to 300°F.

Why Buy from Compressed Air Advisors Online?

Compressed Air Advisors Online specializes in compressed air equipment, filtration, aftercooling, and air treatment systems. High-temperature compressed air applications require careful sizing because airflow, discharge temperature, pressure, ambient temperature, and moisture load all affect dryer performance.

If you are unsure whether the Tsunami High Temperature Pure-5 is the correct solution for your compressor or application, contact our compressed air specialists. We can help determine whether you need a high-temperature regenerative system, conventional Pure Series dryer, refrigerated dryer, or another compressed air treatment configuration.

Frequently Asked Questions

How much air can the Tsunami High Temperature Pure-5 handle?

The Tsunami High Temperature Pure-5, PN 21999-1255, is rated for up to 15 CFM and is designed for approximately 5 HP compressor systems.

What is the maximum inlet temperature?

The integrated system can accept compressed air temperatures up to 300°F at the aftercooler inlet.

What dew point can the High Temperature Pure-5 achieve?

Tsunami publishes dew points down to -40°F for the High Temperature Regenerative Dryer system under appropriate operating conditions.

Why is the dew point -40°F instead of the -80°F listed for the standard Pure-5?

The High Temperature Pure-5 is designed around very different inlet conditions. Its primary job is to accept extremely hot compressed air, cool it, remove bulk moisture, and then regenerate the desiccant while delivering very dry downstream air.

Tsunami publishes the High Temperature system at dew points down to -40°F, while the standard Pure Series is published with lower potential dew points under its specified operating conditions.

Does PN 21999-1255 include an aftercooler?

Yes. The system includes an integrated 50 CFM air-cooled aftercooler.

How cool does the aftercooler make the compressed air?

Tsunami states that the aftercooler can lower compressed air temperature to approximately 5°F to 20°F above ambient temperature.

How much moisture does the aftercooler remove?

Tsunami states that the system can condense up to 75% of the incoming water vapor before the air reaches the regenerative dryer.

Does the High Temperature Pure-5 include pre-filtration?

Yes. The system includes a water separator and oil coalescing filter between the aftercooler and regenerative dryer.

How does the regenerative dryer work?

The dryer contains two molecular sieve desiccant towers. One tower dries compressed air while the second tower regenerates using dry sweep air. The dryer automatically switches between towers approximately every two minutes.

How much regeneration air does the High Temperature Pure-5 use?

The regenerative dryer consumes approximately 1 CFM of compressed air during regeneration.

What type of drains does PN 21999-1255 use?

The High Temperature Pure-5 uses automatic float drains for condensate removal.

What voltage does the dryer require?

The High Temperature Pure-5 operates on 120 VAC and uses two electrical power cords for the complete system.

What size connections are on PN 21999-1255?

The dryer system has a 3/4" NPT inlet and a 1/2" NPT outlet.

What is the maximum operating pressure?

The maximum operating pressure is 175 PSI.

How large is the High Temperature Pure-5?

PN 21999-1255 measures approximately 22" H × 38" W × 13" D and weighs approximately 83 lbs.

Is the High Temperature Pure-5 designed for mobile applications?

Yes. Tsunami specifically designed the High Temperature Regenerative Dryer system for mobile and small-flow applications such as spray foam rigs, mobile refinishing, trailers, and compact workshops.

Can I use this instead of a refrigerated air dryer?

Potentially. The correct dryer depends on inlet temperature, airflow, pressure, required dew point, moisture load, available space, and whether the installation is mobile or stationary.

The High Temperature Pure-5 is particularly well suited to applications with very hot inlet air and limited installation space.

Tsunami High Temp Desiccant Manual

Tsunami High Temp Desiccant Brochure