Devilbiss QC3 Air Filter, Dryer and Regulator

The Devilbiss QC3 is a complete air control unit (desiccant cartridge dryer type) that includes an air filter, dryer and regulator. It is a three stage, 0.1 micron filtration unit that produces clean, oil and moisture free air for spray guns and other air tools.

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Technical Specifications

Brand: Devilbiss
Part Number:
Type:  Desiccant Cartridge Dryer
Filtering Size/Rating:
0.1 micron
Inlet Pressure (max.): 150 PSI [10.3 bar]
Operating Temp.(max): 150°F [65.6°C]
Inlet Port Size: 1/2″ NPT (male)
Output Port Size: 1/4″ NPSM (male)
Pressure Drop: 2 psi (at 30 psi flowing 16 cfm)
Air Filter Included: Desiccant Cartridge (130524)
Qty. of Air Regulators Included: 1 unit (HAR-520)


The Devilbiss QC3 is a three-stage filtering unit with 0.1 micron rating. Special: The filtration comes with only 2 PSI pressure drop.

Service Manual / Parts Breakdown

Service Manual Devilbiss QC3 (*.pdf, source: manualzz)

FAQ: Desiccant Dryers for Air Spray Guns

  • What is a Desiccant Dryer?
    A desiccant dryer is basically a container that contains a certain amount of a drying medium that has the ability to dehydrate the air. One of the most common drying media is silica gel activated alumina. The compressed air stream passes through the granules and the moisture is removed by absorption without reducing the temperature.
  • What kind of contamination such a Desiccant Dryer can remove?
    This type of desiccant dryer is designed to remove only moisture, oil and dirt. They have no effect on carbon monoxide, carbon dioxide, hydrocarbons or similar contaminants.
  • What else must be considered when using a desiccant dryer?
    Removing too much moisture can be just as bad as having too much. Therefore, the full effect of such a dryer must be considered before installing it in the compressed air line.


(not included)

  • Replacement Desiccant Cartridge (130524)
  • Regulator HAR-520 (130100)
  • Shut-off Valve VA-595 (802188)
  • Pressure Gauge GA-375 (192314)

Additional information