California Air Tools 20040DC Powerful 4.0 HP Ultra Quiet & Oil-Free 20 Gallon Air Compressor with 80% Air Drying System – 220V

Product Description

The California Air Tools 20040DC is a powerful 4.0 HP ultra-quiet and oil-free air compressor equipped with an integrated 80% air drying system. Designed for professional workshops, garages, dental applications, milling equipment, CNC systems, plasma cutting, and other applications requiring cleaner, drier compressed air, it combines high airflow with reduced noise and low-maintenance operation.

The compressor features twin 2.0 HP SP-9421-22060 motors operating at only 1,680 RPM. The oil-free dual-piston pump delivers 12.80 CFM at 40 PSI and 10.60 CFM at 90 PSI while producing only 75 dB of operating noise. The 20-gallon steel tank provides substantial air storage for demanding applications.

The integrated air drying system uses an aftercooler and activated alumina desiccant dryer to remove water vapor from compressed air. California Air Tools states that the system is designed to remove approximately 80% of water vapor, helping protect sensitive tools, machinery, and equipment from moisture.

Key Features

• 4.0 HP rated/running power
• Twin 2.0 HP SP-9421-22060 motors
• Oil-free dual-piston pump system
• 20-gallon horizontal steel air tank
• Integrated 80% air drying system
• Aftercooler and activated alumina desiccant dryer
• 12.80 CFM at 40 PSI
• 10.60 CFM at 90 PSI
• 125 PSI maximum pressure
• Ultra-quiet 75 dB operating noise level
• Motors operate at only 1,680 RPM for reduced noise and wear
• Two pressure control gauges
• Female industrial push-to-connect quick connector
• Condor pressure switch
• Thermal overload protection
• 70/30 duty cycle
• Low 14-amp draw
• Oil-free pump supports cold starts and uneven terrain
• Non-ASME steel air tank
• Assembled in the USA with global components

Specifications

• Brand: California Air Tools
• Model: 20040DC
• Motor Power: 4.0 HP Rated/Running
• Motor Configuration: Twin 2.0 HP Motors
• Motor Model: SP-9421-22060
• Motor Speed: 1,680 RPM
• Pump Type: Oil-Free Dual Piston
• Tank Capacity: 20 Gallons
• Tank Material: Steel
• Tank Orientation: Horizontal
• CFM at 40 PSI: 12.80 CFM
• CFM at 90 PSI: 10.60 CFM
• Maximum Pressure: 125 PSI
• Noise Level: 75 dB
• Voltage: 220V
• Frequency: 60 Hz
• Phase: Single Phase
• Current Draw: 14 Amps
• Plug Type: NEMA 6-15P
• Tank Fill Time: Approximately 150 Seconds
• Recovery Time: Approximately 40 Seconds from 95 to 125 PSI
• Duty Cycle: 70/30
• Air Drying: 80% Air Drying System
• Drying System: Aftercooler with Activated Alumina Desiccant
• Desiccant Life: Approximately 3,000–4,000 motor/pump running hours
• Dimensions: 37.5 × 25 × 28 Inches
• Weight: 191 lbs
• Tank Rating: Non-ASME
• Warranty: 1-Year Limited Manufacturer Warranty

What's Included

• California Air Tools 20040DC Air Compressor
• 20-Gallon Horizontal Steel Air Tank
• Twin 2.0 HP SP-9421-22060 Motors
• Oil-Free Dual-Piston Pump System
• Integrated 80% Air Drying System
• Aftercooler
• Activated Alumina Desiccant Dryer
• Two Pressure Control Gauges
• Female Industrial Push-to-Connect Quick Connector
• Four Air Filters
• Condor Pressure Switch
• Thermal Overload Protector

Applications

The California Air Tools 20040DC is designed for applications where reliable airflow and reduced moisture are important, including:

• Dental offices and dental laboratories
• Dental milling equipment
• Large dental milling machines
• General dental tools
• CNC equipment
• Plasma cutting systems
• Medium-duty pneumatic equipment
• Workshops and garages
• Machine shops
• Lathe applications
• General compressed-air applications requiring dry air
• Tools and machinery sensitive to moisture

Maintenance

The oil-free dual-piston pump eliminates the need for compressor oil and reduces routine lubrication requirements. The integrated air drying system uses activated alumina desiccant, which should be replaced approximately every 3,000–4,000 motor/pump running hours, typically every 1–2 years depending on usage.

The two air filters attached to the motor-pump should be replaced every two years under normal operating conditions or annually when the compressor is exposed to dirty or dusty environments. Replacement air filter part number is 90260.