The GST DJ2700M is an industrial gas-fuel High-Velocity Oxygen Fuel (HVOF) spray gun for applying powder coatings. It is designed for stable operation and straightforward maintenance and can be used as a handheld gun or installed on mechanized and robotic motion systems. In the GST MP3M-GF configuration, LPG/propane is used as the fuel gas.
The GST DJ2700M is an industrial gas-fuel High-Velocity Oxygen Fuel (HVOF) spray gun for applying powder coatings. It is designed for stable operation and straightforward maintenance and can be used as a handheld gun or installed on mechanized and robotic motion systems. In the GST MP3M-GF configuration, LPG/propane is used as the fuel gas.
Powder is introduced through an internal axial-feed arrangement, keeping the feedstock concentrated in the core of the high-velocity gas stream. Oxygen and LPG/propane form the combustion mixture, while compressed air is supplied through the gun as part of the process. The water-cooled mixing and combustion sections provide efficient heat removal from the gun hardware and support stable generation of the high-energy gas stream.
During HVOF-GF spraying, powder particles are exposed to the high-velocity combustion jet for a short dwell time. They are heated sufficiently for plastic deformation while retaining a high level of kinetic energy. On impact with the prepared substrate, the accelerated particles flatten and build the coating in successive passes. This process arrangement supports the formation of dense, well-bonded coatings with low porosity and limited oxidation when suitable powder and qualified spray parameters are used.
The DJ2700M combines a compact gun layout with axial hose connections and accessible service components. The same gun can therefore support manual coating work as well as mechanized or robotic operation where controlled gun motion, repeatable spray distance and consistent traverse speed are required.
Key benefits
- Gas-fuel HVOF design using LPG/propane with oxygen for high-velocity powder deposition.
- Internal axial powder injection keeps the feedstock concentrated in the central high-energy region of the gas stream.
- Water-cooled mixing and combustion sections support thermal stability of the gun during operation.
- High particle kinetic energy and short thermal exposure support dense, well-bonded coatings with limited oxidation when the process is correctly qualified.
- Designed for handheld spraying while also supporting mechanized and robotic mounting.
- Compact axial hose arrangement improves handling and installation flexibility.
- Precision-machined components and service-oriented construction support stable operation and routine maintenance.
- Low fuel consumption and high thermal efficiency within the specified operating range.
Optional Accessories and Spare Parts
The GST DJ2700M can be supplied with a recommended spare-parts kit for routine maintenance and scheduled replacement of wear components. Because the source specification does not define a universal list of individual wear parts, the final spare-parts package should be confirmed for the selected gun configuration, operating duty and customer maintenance requirements.
- Recommended spare-parts kit for the GST DJ2700M.
- Gun mounting hardware for mechanized or robotic installation, where required.
- Matched gas, air and powder-feed hose connections as part of the configured HVOF system.
Applications
The GST DJ2700M is intended for industrial HVOF powder-spray applications where a dense, well-bonded coating and controlled thermal input are required. Final suitability depends on the coating powder, substrate, component geometry, required coating properties and qualified process parameters.
- Manual HVOF coating of industrial components.
- Mechanized spraying where repeatable gun travel and spray distance are required.
- Robotic HVOF applications using an appropriate gun mounting arrangement.
- Coating tasks requiring high particle velocity, low porosity and limited oxidation within a qualified process window.
Compatible HVOF System
The DJ2700M is used in the GST MP3M-GF manual gas-fuel HVOF spray system. In this configuration, the system supplies and controls oxygen, LPG/propane and compressed air to the gun, while the powder feeder meters the coating material and transports it to the axial powder-injection zone with carrier gas. The MP3M-GF platform is designed as a compact mobile HVOF solution and can support manual spraying or later integration of the gun with mechanized or robotic motion.
FAQ
What is the GST DJ2700M HVOF Spray Gun used for?
The DJ2700M is used for industrial HVOF powder spraying. It accelerates heated powder particles in a high-velocity gas stream to build dense, well-bonded coatings on a prepared substrate.
Which fuel does the DJ2700M use?
In the GST MP3M-GF configuration, the DJ2700M uses LPG/propane as the fuel gas together with oxygen. Compressed air is also supplied through the gun.
How is powder introduced into the DJ2700M?
Powder is delivered through an internal axial-feed arrangement so that the feedstock enters the central region of the high-velocity gas stream.
How is the DJ2700M cooled?
The gun uses water-cooled mixing and combustion sections to remove heat from the gun hardware and support stable operation.
Can the DJ2700M be used for manual spraying?
Yes. The DJ2700M is designed for handheld HVOF spraying and has a specified gun weight of 2.0 kg.
Can the DJ2700M be mounted on a robot or manipulator?
Yes. The source specification states that the gun can be used with mechanized and robotic mounting arrangements in addition to handheld operation.
What are the nominal gas flow ranges?
The specified flow ranges are 250-280 SLPM oxygen, 40-80 SLPM LPG/propane and 350-600 SLPM compressed air.
Which GST system is compatible with the DJ2700M?
The DJ2700M is configured with the GST MP3M-GF manual gas-fuel HVOF spray system.
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Cooling
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Water-cooled mixing and combustion sections |
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Oxidizer
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Oxygen (O₂) |
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Fuel gas
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LPG / propane |
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Oxygen flow rate
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250-280 SLPM |
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Fuel-gas flow rate
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40-80 SLPM |
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Gun type
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Handheld industrial HVOF spray gun; mechanized / robotic mounting possible |
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Auxiliary process gas
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Compressed air |
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Powder injection
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Internal axial powder feed into the high-velocity gas stream |
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Compatible system
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GST MP3M-GF manual gas-fuel HVOF spray system |
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Process setup
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Gas flows, powder feed, spray distance and gun motion are selected for the specific coating task |
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Operating mode
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Manual spraying; provision for mechanized / robotic gun mounting |
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Weight
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2.0 kg |
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Compressed-air flow rate
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350-600 SLPM |
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Process
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High-Velocity Oxygen Fuel - gas fuel (HVOF-GF) |
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