The term Dew Point comes up often when talking about drying compressed air for our customers. Depending on the application, we will specify the right products in order to come up with the most cost effective dew point for any given facility. The dew point — which is the temperature where moisture starts to condense — is important when talking about compressed air as we want to prevent dew from forming inside piping and valves. Ambient temperatures may vary in a manufacturing environment as compressed air line may run indoors, outdoors, through air conditioned or refrigerated areas, etc. To ensure condensation does not reach the machinery the compressed air is being fed to, our products are designed to dry compressed air to a dew point that is at least 10°F below the lowest ambient temperature that the piping is exposed to.


Van Air Systems D-Series Compressed Air Dryers are single tower deliquescent compressed air dryers for stationary applications. D-Series Dryers remove harmful water vapor from compressed air lines. Wet compressed air enters the bottom of the dryer and flows upward through a bed of deliquescent desiccant, which absorbs moisture as it slowly dissolves. Condensate drops to the bottom of the vessel to be drained. Dry compressed air exits the top of the vessel. When used with Dry-O-Lite desiccant, the D-Series Compressed Air Dryer automatically provides a dew point that is approximately 20°F lower than temperature of the air at the vessel inlet. For example, if the air inlet temperature is 80°F, the D-series Dryer delivers a 60°F dew point. If the air inlet temperature is 50°F, the dryer delivers a 32°F dew point.


>> Low Cost
>> No power required and no moving parts
>> 10 year vessel warranty
>> 20°F to 63°F dew point suppression
>> Prevent air line freeze-ups


MHL-3 through MHL-50 are compact, simple to install, and easy to maintain. These dryers deliver a -40°F pressure dew point to protect pneumatic equipment and processes from the harmful and costly effects of moisture. When treating small volumes of compressed air, an MHL series heatless regenerative desiccant compressed air dryer can deliver dew points down to -100°F in critical applications. Clean and dry compressed air keeps the most vital pneumatic equipment and processes operating smoothly and efficiently.


>> 3-50 SCFM
>> Automatic Controller
>> Solid state timer with LED status indicator lights for visual monitoring
>> NEMA 4 electrical rating is standard (NEMA 4 optional)
>> Easily serviceable components
>> Low air velocity through the desiccant bed for efficient drying


Engineered for long service life and superior protection of your air-operated equipment and processes, Van Air Systems HL series heatless regenerative desiccant compressed air dryers deliver the peace of mind of high quality, value and fast delivery.

All HL series compressed air dryers include patented Interlock Logic valve sequencing to protect compressed air systems from premature loss of flow or pressure. Interlock Logic guarantees that each phase of the drying cycle is completed before the next can begin. This ensures uninterrupted air flow at constant pressure for downstream equipment and prevents accidental vessel re-pressurization, a vital safety feature.

HL series compressed air dryers have a full range of control features. Standard touchpad controllers (on models HL-2500 and below) include real-time status displays, plus a hold feature to preserve system pressure and conserve energy. The controller also features a switching failure monitor for immediate notification of any cycle disruption.


>> 200-2000 SCFM
>> Interlock logic 3-way transfer valve
>> Solid state timer with LED status indicator lights for visual monitoring
>> -40°F to -100°F pressure dew point
>> ASME code stamped vessels
>> Standard touch pad controller


Van Air Systems HLSXA regenerative desiccant compressed air dryers deliver extremely dry compressed air in the harshest and most challenging operating environments, where safety and performance are of central importance. HLSXA dryers are explosion proof and have been designed to operate in areas classified as hazardous, Class 1 Division 1, Groups C & D, per the National Electric Code.

In the oil & gas and petrochemical industries, operators often rely on compressed air to run essential equipment and instrumentation within confined spaces where explosive gases may be present. In these environments, all equipment must be designed to eliminate the possibility of spark generation and explosions. All electrical enclosures and components on HLSXA have been designed and tested with these conditions in mind.


>> 55-800 SCFM at 100 PSIG
>> -40°F pressure dew point
>> Explosion proof controls, Class 1 Division 1 Groups C&D NEMA 4/7
>> 250 PSID maximum working pressure
>> Power supply 115V-1PH-60HZ or 12 V DV
>> Small footprint for convenient installation


Van Air Systems In-line Desiccant Dryers supply a -40°F pressure dew point and are ideal for pneumatic equipment or instruments that require small volumes of extremely dry compressed air or gas. Van Air offers two types of desiccant cartridges. Model ID15/SW uses a disposable silica gel cartridge. The beads are impregnated with a moisture indicator. A sight window on the body of the dryer is present to view the condition of the silica gel, which turns from blue to pink when saturated with moisture, signaling that it’s time to replace the cartridge.


>> -40°F pressure dew point
>> Low pressure drop, less than 1 PSID
>> Industrial grade materials of construction
>> No power or moving parts
>> Ideal for intermittent flow applications
>> Easily replaceable desiccant cartridge (ID-15 only)
>> Visual indication of desiccant life