Explosion Proof Air Dryers

Van Air Systems HLSXA Regenerative Desiccant Compressed Air Dryers

Van Air Systems HLSXA regenerative desiccant compressed air dryers deliver extremely dry compressed air in the harshest and most challenging operating environments, w here 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 w here 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. Note: HLSXA dryers are only for compressed air service. For natural gas service, please see the HLSXG product page.

HLSXA dryers remove water vapor from saturated compressed air through the process of pressure swing adsorption. Each dryer consists of two desiccant columns. While one column is on-line drying compressed air, the other column is regenerated using a portion of depressurized purge air. The flow of process and purge air is automatically and continuously switched between the two desiccant columns by an integrated timer. Pressure dew points of -40 degrees or lower can be achieved with a properly sized HLXA dryer. HLSXA dryers meet the limits of moisture content in compressed air, as defined by the International Society for Automation (ISA) publication 7.0.1 – 1996. HLSXA dryers are available in flow capacities of 55-800 standard cubic feet per minute and 100 PSIG, with control voltages of 115V or 12V DC and a standard design pressure of 250 PSIG. Nonstandard capacities, please contact AVP.


MAXIMUM CAPACITIES HLSXA/G SCFM/ Nm3hr for -40°F PDP

Maximum capacities based on 100°F inlet and 100% RH. HLSXA dryers must have clean, lubricant free feed air.

  80 PSIG 90 PSIG 100 PSIG 150 PSIG 200 PSIG 250 PSIG
Model No.   5.5 BARG 6.2 BARG 6.9 BARG 10.3 BARG 13.8 BARG 17.2 BARG
HLSXA-55 45 72 50 80 55 88 66 106 75 121 127 204
HLSXA-80 66 106 73 117 80 129 96 154 110 177 184 296
HLSXA-120 99 159 110 177 120 193 144 232 164 264 276 444
HLSXA-150 124 199 137 220 150 241 180 289 205 330 345 555
HLSXA-250 206 331 228 366 250 401 300 482 342 549 380 610
HLSXA-500 413 663 456 732 500 803 599 961 684 1089 760 1220
HLSXA-800 661 1061 730 1172 800 1284 959 1539 1095 1757 1215 1950

 

Temperature Corrections Factors              

Multiply maximum capcity by .9 for 110°F
or .8 for 120°F inlet temperature. For assistance selecting a dryer, contact AVP.

 Operating Conditions Maximum Minimum
Pressure 250 PSIG 80 PSIG
Inlet Air 120°F 40°F
Ambient Temperature 120°F 40°F

 

  • Features & Benefits
  • Applications
  • Brochure
  • -40ºF pressure dew point
  • Flow capacities for 55-800 SCFM at 100 PSIG
  • Explosion proof controls, Class 1 Division 1 Groups C & D
  • Pow er supply 115V-1PH-60HZ or 12V DC
  • Small footprint for convenient installation
  • 250 PSIG maximum working pressure
  • Left and right tow er pressure gauges
  • Color changing moisture indicator
  • Adjustable purge flow control
  • Purge exhaust mufflers
  • Optional coalescing pre-filter and after-filter
  • Instrument air drying in hazardous area locations