Air Dryers


Heatless Regenerative Desiccant Air Dryers

PUREGAS offers a wide selection of regenerative desiccant compressed air dryers. Using Pressure Swing Adsorption (PSA) technology, the PUREGAS regenerative air dryers are designed to maximize the efficiency of the drying process with low velocity air through the desiccant for more efficient drying and large internal air passages to reduce pressure drop.

Capabilities of our Regenerative Desiccant Air Dryers

Ultra-Dry compressed air with dew points to better than -100°F can be achieved. With our selection of Mini (0.40 to 3.2 SCFM), Mid-Range (to 12 SCFM), High Capacity (3.0 - 50 SCFM), and Large Desiccant Air Dryers (55 -5000 SCFM) we can meet your clean dry air needs. PUREGAS desiccant air dryers are dependable, low maintenance and easy to monitor.

Miniature Desiccant Air Dryers

These ultra-small desiccant compressed air dryers can be used for low-flow applications.  Heatless regenerative desiccant air dryers are designed to produce low dew points.

Mid-Range Desiccant Air Dryers

The mid-range heatless desiccant compressed air dryers provide low dew points to -100°F ADP (atmospheric dew point). Design with Pressure Swing Adsorption (PSA) technology.

MDH Series Miniature Air Dryers
VSA Series Mid-Range Air Dryers

MDH Series

0.4 to 3.2 SCFM

VSA Series

To 12 SCFM

High Capacity Desiccant Air Dryers

Using Pressure Swing Adsorption (PSA) technology, these
regenerative air dryers maximize the efficiency of the drying process.
Ultra-Dry compressed air dew points of -40°F to better than -100°F can be achieved.

HR Series High Capacity Air Dryers

HR Series

3.0 to 50 SCFM

Membrane Air Dryers

SUNSEP™ brand technology is the patented membrane fibers developed by Asahi Glass Company (AGC) which has nearly 50 years of experience in the separation of gases with membranes. 

The Membrane Air Dryer Process

The drying process works by passing compressed air inside the hollow fiber membranes where the water vapor molecules permeate through the wall of the membrane leaving the oxygen and nitrogen molecules to exit the outlet as dry air. The permeated water vapor is then removed by a small amount of dry air fed back over the outside of the membrane fibers through the purging valve or orifice.  With a countercurrent purge flow on the outside of the tubing, drying is continuous.  In order for infrared or UV-based gas analyzers to operate efficiently and deliver accurate results it is critical to remove water vapors.  Water vapors in the gas sample acts as either a physical interferant or a spectral.

Membrane Air Dryers

Sunsep's barrel type dryers are used in applications with higher flow requirements. The cassette type dryers are especially well suited for installation in "point -of-use" tight spaces and OEM's. Flex membrane dryers are ideal for drying compressed air or gas, as well as for removing moisture from sample gas.

Gas Sample Dryers

Sunsep's SWG 35 - 100 series are multi tube Flemion dryers, designed for high flow, high performance gas drying applications. Flemion has a very specific chemical affinity for water vapor, which is why it makes such a great dryer.

Membrane Air Dryers Membrane Gas Dryers

Membrane Air Dryers

0.06 to 25 SCFM

Membrane Gas Dryers

2.0 to 10 lpm

Refrigerated Air Dryers

Economy/Compact Refrigerated Air Dryer

PUREGAS' RDC economy / compact refrigerated air dryers use aluminum cooling heat exchangers that produce the lowest pressure drop ratings in the compressed air industry.  Oversized condensers allows dryer to operate in ambient temperatures in excess of standard conditions. RDC economy / compact refrigerated air dryer's design saves space and uses less energy.

High Inlet Temperature Refrigerated Air Dryer

RDH refrigerated air dryers are used for high inlet air temperatures (up to 210°F). These units are designed with an aluminum cooling heat exchanger that reduces energy consumption and lowers pressure drop. They eliminate the need for a separate aftercooler, moisture separator, and particulate filter.  Designed for applications in environments with high ambient temperatures ranging from 35°F to 210°F.

RDC Series Refrigerated Air Dryers RDH Series Refrigerated Dryers

RDC Series

Economy / Compact

RDH Series

High Inlet Temperature

Additional Air Dryers

Compressed Dry Air Packages

Clean and dry air system includes oilless compressor and desiccant air dryer, custom designed for your application requirements.

Manual Desiccant Air Dryers

X-series manually regenerated desiccant air dryers are an excellent choice for point-of-use applications. Ideal dryers for removing moisture from intermittent use or very low flow compressed air lines. Color change desiccant or moisture indicators show instant status of the compressed air system.

Compressed Dry Air Packages Manual Desiccant Air Dryers


Compressed Dry Air Package


Manual Desiccant Air Dryers