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Sullair DBP Desiccant Dryer

Sullair DBP Series
Desiccant Regenerative Blower Purge Dryer


The dual tower design of the DBP, blower purge dryer, allows for continuous absorption of water from compressed air by using a desiccant. Drying is accomplished by passing wet compressed air through the desiccant bed of one of the towers where moisture is absorbed. Regeneration of the desiccant is accomplished using a blower to pass ambient air through a low watt density heater because heated air has a greater affinity to absorb moisture. When passed through the regenerating tower at near ambient pressure, the heated air flows through the wet bed, removing water vapor previously absorbed by the desiccant.


  • 500 to 10,000 acfm (14.16 to 283.17 m3/min)

  • Adjustable purge valves
  • ASME/CRN code welded pressure vessels
  • Easy front access control panel
  • Fail safe design in event of power failure
  • Field adjustable drying cycle time
  • Fully automatic self contained dryer
  • High outlet temperature shut off and alarm
  • High quality valves
  • Insulated heater housing and piping
  • Low-watt density heater
  • Pilot air filter
  • PLC control and display
  • Pre- and after-filter pre-piped and mounted
  • Purge flow indicator
  • Robust steel frame with floor stand
  • Safety back-up contactors
  • Safety heater thermostat
  • Separate drain and fill port
  • Separate safety pressure relief valve for each tank
  • Stainless steel inlet/outlet diffusers
  • Thermostatically controlled heating
  • Tower pressure gauges
  • UL/CUL electrical certified

  • 3 Valve and 9 valve bypass options
  • -4°F and -100°F pressure dew point
  • Demand Cycle Control
  • Dew point monitoring system
  • Failure to shift alarm
  • High heater remote temperature alarm
  • Low ambient package
  • Low bed temperature shut off with light and contact
  • Microprocessor based controls/Modbus
  • NEMA 4, 4x enclosures
  • Optional voltage
  • Pre-piped filter and bypass packages
  • Purge flow meter
  • Visual moisture indicator

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