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The Van Air D42 is a single-tower deliquescent compressed air dryer designed for low-pressure, intermittent-flow, and point-of-use applications. It uses Dry-O-Lite desiccant to absorb water vapor, offering 20°F to 63°F dew point suppression depending on inlet conditions.

Unit of Measure

Specifications

Brand

 N/A Van Air Systems

Model

 N/A D42

Weight

 N/A 1275 lb

Compressed Air Temperature

 N/A Up to 250 ºF

Standard Systems

 N/A 250 through 1600 scfm

Diameter

 N/A 42.75 in

Flow Rating

 N/A Up to 1250 scfm

Inlet/Outlet (I/O) Connection Size

 N/A 4 in

Inlet/Outlet (I/O) Connection Type

 N/A Flanged

DRY-O-LITE® Per Unit

 N/A 1700 lb

Dew Point Suppression

 N/A 20 to 63 ºF

Maximum Capacities at 10 Pound Per Square Inch Gauge (PSIG) Pressure

 N/A 269 scfm

Maximum Capacities at 25 Pound Per Square Inch Gauge (PSIG) Pressure

 N/A 378 scfm

Maximum Capacities at 100 Pound Per Square Inch Gauge (PSIG) Pressure

 N/A 1250 scfm

Maximum Capacities at 125 Pound Per Square Inch Gauge (PSIG) Pressure

 N/A 1522 scfm

Maximum Capacities at 150 Pound Per Square Inch Gauge (PSIG) Pressure

 N/A 1795 scfm

Recommended Afterfilter

 N/A F200-1250-3-RB-MD-PD6

Recommended Prefilter

 N/A F200-1250-3-B-MD-PD6

Type

 N/A Single tower, deliquescent dryer (no power, no moving parts)

Applications

N/A

  • Paint booths, blast rooms
  • Rail yards
  • Landfill/digester gas
  • Ready mix, cement, asphalt plants
  • Sawmills and wood production

Recommended Accessories

N/A , Pressure TemPerature Gauge ($120.00)
, MDV Series 1 Inch (in) Connection Size and 600 Pound Per Square Inch Gauge (psig) Maximum Allowable Working Pressure (MAWP) Motorized Ball Valve ($1,075.00)

Features and Benefits

Portability

 N/A Mounts to trucks, trailers, or skid-packaged equipment; operates safely in explosive vapor areas

Vessel

 N/A ASME code-certified pressure vessel with pressure relief valve required

Operational Notes

 N/A
  • No electrical components — ideal for hazardous environments
  • Low cost and long service life (10-year vessel warranty)

Maintenance

 N/A
  • Drain condensate at least once every 8 hours of operation
  • Replace desiccant several times per year

Safety

N/A

  • Always depressurize before maintenance; never work on the dryer under pressure
  • Replace hatch cover gasket after each removal or annually; replace cover every 5 years
  • Do not weld, grind, or alter the vessel — voids certific

Additional Information

N/A The Van Air D42 is a rugged, low-maintenance, portable deliquescent dryer suited for industrial air drying where simplicity, safety, and portability are priorities. It’s especially effective in low-pressure, intermittent-use, and hazardous environments.