1. Product Overview
The AEROPRO A8312 Automatic Mixing Paint Tank Gun is designed for both amateur and professional use, offering sturdy construction and a compact design. It is ideal for painting large areas such as buses, trucks, and vans. The system includes a pressure spray gun equipped with a pressure gauge and fluid pressure regulator for precise settings, along with a twin set of hoses for easy movement and operation.

2. Specifications
| Attribute | Value |
|---|---|
| Model | A8312 |
| Brand Name | XMSJ (AEROPRO) |
| Paint Capacity | 10L |
| Working Pressure | 1.4-2.1 bar |
| Paint Output | 1/4" |
| Dimension | 283x283x383mm |
| Origin | Mainland China (Zhejiang) |
| Certification | CE |
| Feed Type | Pressure Feed |
| Application | Coating |
| Usage | Car Body Coating |
| Quality | High Industrial Quality |
| Function | Painting Tool |
| Warranty | 1 Year Limited |
3. Components and Features
The AEROPRO A8312 is designed with several key components to ensure efficient and safe operation:

- Handle: Convenient and portable for easy transport.
- Pressure Spray Gun: Equipped with a pressure gauge and fluid pressure regulator for accurate settings and precise control.
- Barometer: Displays the pressure inside the paint pot.
- AIR Pressure Adjustment Knob: Allows adjustment of the air pressure in the barrel for high-precision control and efficient spraying.
- Safety Valve: Prevents the pressure inside the barrel from becoming too high, ensuring safe operation.
- High-Strength Lock: Provides efficient sealing to prevent paint wastage and ensure a secure closure.
- 10L Aluminum Paint Tank: Constructed for corrosion resistance against acid and alkali, offering stronger sealing and durability.
- Feed/Intake Pipe: Twin set of hoses designed for easy movement and operation of the spray gun.
4. Setup and Installation
Before operating the AEROPRO A8312, ensure proper setup and installation:
- Placement: Place the paint tank gun on a stable, level surface to prevent tipping during operation.
- Connections:
- Connect the air compressor to the air intake port on the pressure pot.
- Connect the fluid hose from the pressure pot to the spray gun's fluid inlet.
- Connect the air hose from the pressure pot's air outlet to the spray gun's air inlet.
- Ensure all connections are secure and leak-free.
- Filling the Tank:
- Release any residual pressure from the tank using the safety valve or pressure adjustment knob.
- Open the high-strength locks and remove the lid.
- Pour the desired paint into the 10L aluminum tank. Do not overfill.
- Securely replace the lid and engage all high-strength locks.
- Initial Pressure Setting:
- Slowly introduce air pressure from the compressor.
- Use the AIR Pressure Adjustment Knob and observe the Barometer to set the desired working pressure (1.4-2.1 bar).
- Adjust the fluid pressure regulator on the spray gun for optimal paint flow.
5. Operating Instructions
Follow these steps for effective operation of your paint tank gun:
- Preparation: Ensure the work area is well-ventilated and protected from overspray. Wear appropriate personal protective equipment (PPE), including a respirator, safety glasses, and gloves.
- Test Spray: Before painting your target surface, perform a test spray on a scrap piece of material to check the spray pattern and paint consistency. Adjust the air pressure and fluid flow as needed using the adjustment knobs on the gun and tank.
- Spraying Technique:
- Hold the spray gun perpendicular to the surface, maintaining a consistent distance (typically 6-10 inches).
- Use smooth, even strokes, overlapping each pass by about 50%.
- Release the trigger at the end of each stroke to avoid paint buildup.
- The twin set of hoses allows for easy movement around large objects.
- Refilling: If the paint tank needs refilling, always release the air pressure from the tank before opening the lid.
- Shut Down: When finished, turn off the air compressor, release all pressure from the tank and hoses, and disconnect the air supply.

6. Safety Information
Please read and adhere to the following safety guidelines to prevent injury and damage to the equipment:
- This product is NOT explosion-proof. Do not use in flammable or explosive environments.
- Always disconnect power (air supply) before performing any maintenance, cleaning, or adjustments.
- Keep away from strong electromagnetic interference sources.
- Do not disassemble or modify the product yourself; this will void the warranty.
- Always follow industrial safety standards during installation and use.
- Wear appropriate personal protective equipment (PPE), including eye protection, gloves, and a respirator, especially when spraying paints or chemicals.
- Ensure adequate ventilation in the work area to prevent inhalation of fumes.
- Never point the spray gun at people or animals.
- Keep children and unauthorized personnel away from the operating area.
7. Maintenance
Regular maintenance ensures the longevity and optimal performance of your AEROPRO A8312:
- Cleaning After Each Use:
- Release all pressure from the tank and spray gun.
- Empty any remaining paint from the tank.
- Clean the inside of the paint tank thoroughly with an appropriate cleaning solution for the type of paint used.
- Flush the spray gun and hoses with cleaning solution until clear.
- Disassemble the spray gun nozzle and air cap for detailed cleaning.
- Lubricate moving parts of the spray gun as recommended by the manufacturer.
- Regular Checks:
- Inspect hoses for cracks, leaks, or damage. Replace if necessary.
- Check all connections for tightness.
- Examine the pressure gauge and safety valve for proper function.
- Ensure the high-strength locks on the tank lid are operating correctly.
- Storage: Store the unit in a clean, dry place, away from extreme temperatures and direct sunlight.
8. Troubleshooting
Here are some common issues and their potential solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No paint flow | Clogged nozzle, insufficient air/fluid pressure, empty tank, kinked hose. | Clean nozzle, adjust pressure, refill tank, straighten hose. |
| Uneven spray pattern | Incorrect pressure settings, dirty air cap/nozzle, paint too thick. | Adjust air/fluid pressure, clean air cap/nozzle, thin paint as per manufacturer's instructions. |
| Air leaks | Loose connections, damaged seals/gaskets, faulty valve. | Tighten connections, replace damaged seals/gaskets, inspect valves. |
| Paint spitting | Low fluid level, loose fluid connection, worn needle packing. | Refill paint, tighten fluid connections, replace needle packing. |
If you encounter issues not listed here or if the suggested solutions do not resolve the problem, please contact customer support.
9. Package Contents
Upon receiving your AEROPRO A8312, please verify that all the following items are included:
- 1 x Automatic Mixing Paint Tank (10L)
- 1 x Pressure Spray Gun with Pressure Gauge and Fluid Regulator
- 1 x Set of Twin Hoses (Air and Fluid)
- 1 x User Manual (this document)
- 1 x Seal Gasket (spare)
10. User Tips
Based on general feedback and product characteristics, here are some tips for optimal use:
- Always ensure the paint is properly thinned according to the paint manufacturer's specifications for spray application. This helps prevent clogging and ensures a smooth finish.
- Practice on scrap material to get a feel for the spray pattern and pressure adjustments before working on your main project.
- Thorough cleaning after each use is crucial to prevent paint from drying inside the gun and hoses, which can lead to blockages and reduced performance.
- Regularly check all hose connections and seals for wear and tear to maintain consistent pressure and prevent leaks.
No specific user tips were found in the provided customer reviews or Q&A for this product model.
11. Warranty and Support
Your AEROPRO A8312 Automatic Mixing Paint Tank Gun comes with a comprehensive warranty and dedicated support:
- Warranty: 12 months limited warranty, excluding easy-wearing parts.
- Free After-Sales Service: Provided for non-human quality defects.
- Technical Support: Professional technical support is available for wiring and application queries.
For any inquiries or support, please contact customer service:
- WhatsApp: +86 15232138097
- Email: kaigui8881@163.com
12. Frequently Asked Questions (FAQ)
- Q1: What's your MOQ?
- A: Our R8312 MOQ is 100 units per model for AEROPRO brand.
- Q2: What's your payment terms?
- A: We could accept L/C, T/T and Credit card, also accept the payment against B/L copy after discuss detailed.
- Q3: What is the lead time?
- A: Sample: 1-3 days, mass production 20-40 days for the first order.
- Q4: Can we put our logo on our products? Is there extra charge for it?
- A: Yes, we accept the OEM brand and the different logo way on the housing. Stickers are without extra charge, mould and laser engraving with different cost and we can discuss detailed.
- Q5: Can samples be delivered free charge?
- A: For quality reference, we can supply FOC 1-2 samples, but Freight Collect please.
- Q6: How about your company scale?
- A: Our company is with 1400 employees and covers 100,000 square meters, more than 120 engineers and 100QC for quality control and improvement.
- Q7: What’s your warranty?
- A: Our warranty is 12 months limited warranty except the easy wearing parts.
- Q8: What are your QC inspection steps?
- A: We have 7 QC steps inspection steps:
- Raw material inspection
- Metal work inspection
- Heat treatment inspection
- Assemble line 100% inspection
- Life inspection test
- Packing inspection
- Final inspection in the warehouse
- Q9: What’s your heat-treatment?
- A: We are using the Germany Ipsen heat-treatment machine for our key parts which extend the long working life.
- Q10: What’s your production capacity?
- A: Air tools: 300,000pcs per month, air spray guns 500,000pcs per month, air nailers 300,000pcs per month, airless sprayers 30,000pcs per month.
- Q11: What’s your certification?
- A: We have CE/GS/EMC/ETL/UL by TUV Rheinland and SUD, we also pass the BSCI/SA8000/ISO9000.