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Electrostatic Automatic Spray Gun

AirCoat Spray Method for Solvent-Based




For large workpiece from machine make or large complex workpiece and require high pressure spray for fast operating

High Pressure Spraying with supporting from electrostatic technology

Electrostatic Automatic Air Spray Gun GA5000EAC reproduce the atomizing system from GA5000EAC which is the manual type for nozzle, air cap and needle that it is used same set with automatic type. Even the paint hose are the same. The different is GA5000EAC structure will include the control section replace handle and trigger in order to use air pressure to switch on/off gun control so the air hose will be different type from manual type but the basis of using pneumatic system are the same which following as below explanation; 

The example of large workpiece, machine making by order, water tank, large metal furniture that it take operating time more than other type of workpiece even there have an electrostatic technology to support. In order to achieve the objective of production that there have the time limit but it need to increase a production volume and reduce the material consumption. We can separate the condition and solution for following below requirement.

1. Quick Painting Cover a huge surface area and spend a few timing. Spraying with airless high pressure can respond this requirement.

2. Cover totally a workpiece surface for whole body  Spraying with air spray can reach the paint into the workpiece surface.


From above 2 requirements, there have only 1 spraying method that can achive a both 2 requirements in the same spray gun which is AirCoat method (Air assist airless). This method combine the advantages of air spray and airless spray which are the performance of spray pattern control (air spray) and high speed spraying without air (airless) then it make 2 main component of aircoat spray that it include high pressure spray pattern with start from 100 - 150 bar and low air pressure to control the high pressure spray pattern that it support to make atomizing flow cover the workpiece surface better than using airless spray only. The result that it spend a few operating time as it is sprayed with high speed pattern but it still cover completely a workpiece surface. So the GA5000EAC can achive the 3rd requirement on below;

3. Reducing the material consumption rate The electrostatic technology support the wrap around effect that it help to save the material consumption rate and also increase pace of operating time.

Therefore. the combination of 3 advantages make the GA5000EAC to be high speed spray gun, high performance of wrap around effect and material saving so many of user use this spray gun for large work piece.

Component of GA5000EACIC (Pattern Adjustment at Spray Gun)

Every automatic spray gun divide sub spray gun type for spray pattern adjustment, first, the GA5000EACIC which is setting spray pattern at spray gun. IC is came from internal control. The structure are following as below;

GA5000EACIC Picture.png

List of GA5000EACIC Component


1. Front Cover

2. Union nut with nozzle protection

3. Air Cap

4. Flat jet nozzle

5. Gun adapter

6. Piston Housing

7. Rear cover

8. Air diffuser housing

9. Spray Pattern air setting

10. Gun holder

11. Paint hose

12. Sealing fitting

13. Nozzle screw joint

14. Nozzle attachment

15. Round jet nozzle

Structure of GA5000EACIC

GA5000EA Rear Connection Internal Versio

Connecting Position of GA5000EAIC


1. Connection closed with dummy plug

2. Paint Connection NPSM 1/4''

3. Control air connection D6

4. Gun cable connection

5. Shaping air or atomizing air connection D10

Connections on the rear side: GA5000EACIC

Structure of GA5000EAEC (Spray Pattern adjustment at control unit)

The other sub type of GA5000EAC is GA5000EACEC that the spray pattern must be adjusted at EPG5000 control unit. EC is mean external control or adjustment will be performed at external spray gun which support an operating progress more easy and suitable for spray booth which has limited area for reaching to spray and that's why the VM5000 control unit can not be applicable with automatic spray gun type.

GA5000EACEC Picture.png

List of GA5000EACEC Component


1. Front cover

2. Union nut with nozzle protection

3. Air Cap

4. Flat jet nozzle

5. Gun Adapter

6. Piston Housing

7. Rear Cover

8. Air diffuser housing

9. Gun holder

10. Paint hose

11. Sealing fitting

12. Nozzle screw joint

13. Nozzle attachment

14. Round jet nozzle

GA5000EA Rear Connection External Versio

Connecting Position of GA5000EACEC


1. Atomizing air connection D10

2. Paint Hose Connection NPSM 1/4''

3. Control air connection D6

4. Gun cable connection

5. Spray Pattern Air (Shaping Air) connection D8


The significant different between EACIC and EACEC is connection position no.1 due EACEC require that air hose D10 to connect this position for atomizing air. In other hand, the pattern air is moved to position No.5 that the air hose link with EPG5000.


For other connecting position in each air hose diameter of EACEC will be located in different position of EACIC.

Connections on the rear side: GA5000EAEC

Spray Pattern adjustment of GA5000EAC

Spray Pattern GA5000EAC.png

Pattern Adjustment by EACIC

Position A is the adjusting screw for air pattern setting.

Spray Pattern GA5000EAC.png

Pattern Adjustment by EACEC

Spray pattern will be adjusted at EPG5000 at position B. This area is linked with spray gun by air pattern hose.

Technical Data of GA5000 EAC

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Dimension of GA5000EAC (Measurement unit is "mm")

GA5000EAC Dimension Flat Jet.png

GA5000EAC dimension by flat nozzle

GA5000EAC Dimension Round Jet.png

GA5000EAC dimension by round nozzle

GA5000 Connecting Dimension.png

Connecting Dimension of  GA5000EAC

Paint Resistant Information and suitable application

Recommend Paint Resistant

The recommend paint resistant value is more than 150 kOhm that electrode can add the electric charge and bring paint to wrap around workpiece automatically.

Generally, the paint for airless spray is small particle so there is no problem with electric charge. No problem about low resistant rate for high pressure spraying.

Summary of compatible application

  • Large work piece such as oil tank water tank gas tank

  • Large Size Pipe

  • Transformer Path

  • Large Scale of Metal or Wood Furniture with evenly smooth surface

  • Large Machine built by order

  • Metal Sheet

  • Workpiece for construction progress

Metal Tubes
Spray Booth for Automatic GA5000EA.png

Component of spray booth for automatic spray gun

A: Spray Booth

B: Controller

C: Reciprocator

D: Electrostatic Spray Gun

E: Work piece

F: Conveyor

Example of spray booth for automatic system

Suitable viscosity rate for GA5000EAC

The viscosity rate is referred to lacquer as the main material and the recommend rate scale is DIN Cup 4 which is the viscosity cup with diameter size at 4 mm.

The recommend viscosity rate is 25 and 40 DIN sec or even the viscosity at 60 DIN sec, it is still usable as according to below tale (Remark: DIN4 is the standard viscosity unit of industry at Germany, the measurement unit is second by counting from timing liquid falldown flow from cup. The below table is the comparative table with other standard rate)

Document: Viscosity Table Sheet


Please click on left icon to see the table of viscosity in bilingual version (Thai/English)

The guidance of viscosity table for GA5000EAC

The recommend rate is 25 and 34 DIN Cup 4 sec so if we use the other standard rate, please refer to number on row 10 to row 15 in left table Therefore, the viscosity rate in the same row can use. For example, if you use ANEST IWATA NK-2, the recommend rate is 25 and 49 NK-2 sec.

Accessories of GA5000EAC

(Please click "Details" for further information)


EPG5000 Control Unit


The control unit for electrostatic spray gun solvent-based only and compatible to GA5000EA and GA5000EAC. The main duty is setting the voltage and current rate of spray gun. It can not be used with manual spray gun and water-based spray gun version.

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Nozzle and Air Cap (High Pressure)

Technical Data for nozzle and air cap of GA5000EAC that 2 these components are built for high pressure spray only. Presented by separating to flat nozzle and round nozzle.


Hose for high pressure

The hose for high pressure spray gun include a high pressure hose from WAGNER for 250 bar and suitable size of air hose and also include gun cable for transferring control signal between spray gun and control unit.


Paint Resistivity Meter


If you don't sure about material that there have suitable resistant rate or not, WAGNER has paint resistant meter which are RS500 that it show the figure rate from Ohm kOhm and mOhm.

Feeding Unit for Electrostatic Spray Gun GA5000EAC

(Please click "Details" for further information)


Diaphragm Unit

  • WAGNER Cobra


Piston Pump Unit

  • WAGNER Ice Breaker

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2K Mixing Unit

  • WAGNER Twin Control

  • WAGNER 2K Smart

  • WAGNER 2K Comfort

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