Stabilize Your Airbrush Performance with Extra Tank Capacity

The Hobby Mio Cylinder Module is the perfect add-on for your HM-04 Portable Airbrush Compressor, designed to transform your mobile setup into a more stable, professional-grade painting station. Featuring a 1.3L air tank capacity and an adjustable pressure regulator, this module smooths out pressure fluctuations, stores compressed air for quieter operation, and gives you precise control over your spraying pressure. The integrated safety valve automatically releases pressure at 45PSI for worry-free operation. Universal 1/8" threading makes it compatible with most hobby compressors, but it's specifically optimized for the Hobby Mio HM-04.

Key Features & Benefits

• 1.3L Large Capacity Tank: Stores compressed air to reduce compressor cycling, providing more consistent pressure and quieter operation during painting sessions.
• Adjustable Pressure Regulator: Fine-tune your spraying pressure with the precision control knob – clockwise to increase, counterclockwise to decrease. Achieve the exact PSI needed for fine detail work or broad coverage.
• 45PSI Safety Relief Valve: Built-in automatic pressure relief valve opens at 45PSI to prevent over-pressurization, ensuring safe operation at all times.
• Universal 1/8" Thread Compatibility: Standard 1/8" male thread connections work with most hobby air compressors, including HM-04, HM-03, HM-01, and many others.
• Integrated Mounting System: The module features a slide rail that perfectly matches the HM-04's back panel, allowing secure attachment without tools (mounting bracket included).
• Stable Desktop Operation: Adds significant weight (approx. 1.7kg) and a wide footprint to your compressor setup, preventing tipping and vibrations during use.
• Complete Mounting Hardware: Includes a dedicated HM-04 mounting bracket, airbrush holder, and all necessary connection hoses.

Technical Specifications

• Product Name: Desktop Air Tank Module for Air Compressors
• Brand: Hobby Mio
• Model Compatibility: Optimized for HM-04 Portable; also compatible with HM-03, HM-01, and most compressors with 1/8" outlets
• Tank Capacity: 1.3L internal volume
• Pressure Safety Limit: 45PSI (automatic relief valve activates above this pressure)
• Thread Size: 1/8" male thread (standard hobby fitting)
• Weight: Approximately 1.7kg (3.75 lbs)
• Dimensions (with HM-04 attached): 205mm × 200mm × 165mm (excluding airbrush holder)
• Product Code: 30020011
• EAN: 6972852119367

What's Included in the Package

• 1 × Air Tank Module (1.3L capacity)
• 1 × Connection Hose (for linking compressor to tank)
• 1 × HM-04 Portable Compressor Mounting Bracket
• 1 × Airbrush Holder / Stand
• 1 × Instruction Manual

Note: Airbrush and airbrush hose are NOT included. The package contains everything needed to connect your HM-04 to the tank module.

Installation & Setup Guide (for HM-04)

1. Attach Mounting Bracket: Secure the provided mounting bracket to the tank module using the included hardware.
2. Slide Compressor into Place: Align the slide rails on the back of your HM-04 compressor with the corresponding grooves on the tank module's mounting bracket. Slide the compressor down until it clicks securely into place.
3. Connect Air Hose: Use the provided connection hose to link the air outlet of your HM-04 compressor to the air inlet port on the tank module. Ensure connections are hand-tight.
4. Attach Airbrush Hose: Connect your airbrush hose to the tank module's regulated output port (the port with the pressure adjustment knob).
5. Adjust Pressure: Turn the pressure adjustment knob clockwise to increase output pressure, counterclockwise to decrease. Note: It may take several rotations before pressure begins to change – this is normal.
6. Begin Painting: Power on your compressor and start spraying. The tank will fill and maintain stable pressure, reducing compressor cycling.

Important: The airbrush hose is not included. Please purchase separately if needed.

How the Tank Module Improves Your Workflow

• Pressure Stabilization: The 1.3L tank stores compressed air, smoothing out the pressure pulses from the compressor's piston. You'll experience more consistent paint flow and fewer pressure drops during long, continuous sprays.
• Quieter Operation: With stored air available, the compressor runs less frequently. The HM-04 can fill the tank and then shut off, allowing you to paint from the tank's reserve for short periods in near silence.
• Precise Pressure Control: The adjustable regulator lets you dial in exact pressures from 0–45PSI, giving you complete control over paint atomization for everything from fine detail work to broad base coats.
• Added Stability: The module's weight and wide base prevent your compressor from tipping, even with longer hoses and airbrush movements.

Important Usage Notes

• Pressure Fluctuation: When using this module, the real-time output pressure will fluctuate slightly between the regulator setting and the compressor's start/stop pressure. This is normal behavior for tank systems.
• Initial Pressure Adjustment: The first time you adjust the pressure knob, you may need to turn it several times before the pressure gauge responds. This is normal as the regulator seats itself.
• Safety Valve: The integrated safety valve automatically opens at 45PSI to prevent over-pressurization. If it activates, reduce your compressor's output pressure immediately.
• HM-05 Compatibility Note: The tank module cannot fully replicate the performance of the HM-05 Pro's integrated tank system when used with the standard HM-05. Performance will be similar but not identical.
• Hose Not Included: The airbrush hose connecting the module to your airbrush is NOT included. Please ensure you have a compatible 1/8" thread hose.

Compatible Hobby Mio Compressors

• HM-04 Portable Airbrush Compressor – Perfect match with included mounting bracket
• HM-03 Mini Desktop Compressor – Compatible with standard 1/8" connection
• HM-01 Mini Portable Compressor – Compatible with standard 1/8" connection
• Most hobby compressors with 1/8" outlet threads – Universal fit for maximum versatility

Why Choose the Hobby Mio Tank Module?

• Transform Your Portable Compressor: Upgrade your HM-04 to near-studio performance without buying a whole new compressor.
• Professional Results at Home: Achieve smoother finishes, finer details, and more consistent paint flow with stabilized pressure.
• Safety First: Built-in 45PSI relief valve and robust construction ensure worry-free operation.
• Easy Integration: Tool-free slide mounting and clear instructions get you painting in minutes.
• Expandable System: Part of Hobby Mio's growing ecosystem of airbrush tools and accessories.

Safety Information & Precautions

• Not intended for use by children under 14 years of age.
• This is a pressurized air tank. Always operate within the specified pressure limits (max 45PSI).
• Never exceed the 45PSI safety limit – the relief valve is a backup, not a regular operating feature.
• Inspect all hoses and connections before each use. Replace any damaged components immediately.
• Use only with clean, dry air from a hobby airbrush compressor.
• Do not modify the tank, regulator, or safety valve.
• Store in a cool, dry place away from direct sunlight and heat sources.
• If the safety valve activates, turn off the compressor immediately and investigate the cause.
• Disconnect the compressor from power before making any connections or adjustments.
• Keep fingers and loose clothing away from moving parts during operation.

Related Products

• Hobby Mio: Portable Airbrush Compressor – HM-04 – The perfect companion compressor for this tank module.
• Airbrush Tools Category – Browse airbrushes, hoses, and cleaning supplies.
• Airbrush Paint Category – Explore our selection of airbrush-ready paints.

Upgrade Your Airbrushing Experience

The Hobby Mio Desktop Air Tank Module is the smart addition every HM-04 owner needs. It transforms your capable portable compressor into a more stable, quieter, and more controllable painting system – without the expense of a whole new unit. With 1.3L of tank capacity, precise pressure adjustment, and safety features you can trust, this module delivers the performance serious modelers demand. Whether you're painting delicate 1/144 scale details or laying down smooth base coats on large surfaces, the added tank capacity makes every session better. Select yours today and feel the difference stable air makes.