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The DFW-5.3/3-15 Oil-Free Natural Gas Compressor is designed for industrial natural gas pressurization applications in LNG, petrochemical, environmental protection, and related process systems.
Using natural gas as the compression medium, the compressor provides a flow rate of 1100Nm³/h, with an inlet pressure of 0.3MPa.G and a discharge pressure of 1.5MPa.G.
Driven by a 90kW motor, the DFW-5.3/3-15 adopts a D-type balanced reciprocating piston structure with oil-free lubrication, helping maintain clean gas compression while providing stable operation for industrial applications.
The compressor is supplied with a skid-mounted configuration, integrating the main unit and supporting components for easier transportation and installation.
The DFW-5.3/3-15 is developed for natural gas systems requiring pressure increase and continuous gas handling.
Typical applications include:
Used for natural gas boosting and gas handling processes in LNG-related facilities.
Suitable for process systems requiring stable natural gas compression.
Applied in gas recovery and treatment processes where natural gas compression is required.
Provides compressed natural gas for industrial production systems.
D-Type Balanced Reciprocating Compressor Structure
The DFW-5.3/3-15 adopts a D-type balanced reciprocating piston structure.
The main design features include:
Balanced D-type configuration
Double-acting compression design
Oil-free lubrication system
Air-cooled structure
Suitable for continuous industrial operation
The balanced structure helps reduce vibration during operation and supports stable performance under different working conditions.
Patent Certificates
 | A piston rod thread protective sleeve ZL 2017 2 1907021.7 | | A piston ring support device ZL 2018 2 0294776.2 | |
| A range piston ZL 2017 2 190177.0 for symmetrical balanced compressors | | Integrated long short double compartment ZL 2018 2 0294762.0 |
Integrated Skid-Mounted Package Design
The DFW-5.3/3-15 is designed as an integrated skid-mounted compressor package.
The package structure provides:
Simplified transportation
Faster installation
Reduced site assembly work
Convenient connection with customer systems
The skid-mounted arrangement is suitable for industrial projects requiring compact equipment installation.
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The compressor in this picture is a non-standard product. The product provides independent solutions tailored to customers' specific usage requirements (flow rate/purity/pressure, usage environment, main purpose, and customer specific requirements), from design to product customization.
Structural form: D-type/M-type/S-type/W-type/V-type/Z-type
Cooling method: water cooling/air cooling/mixed cooling
Installation form: fixed/mobile/pry mounted/cabin type
Drive mode: motor drive/diesel engine start
Transportation: sea/air/land
Packaging:
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| Metal cabin | Wooden box | Soundproof cabin |
Project Case
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| Lanzhou petrochemical company 240000 tonsyear ethylene production capacity restoration - adding butadiene and 1-butene unloading facilities project | Alibek oilfield in Southern Kazakhstan | Procurement of Molecular Sieve Dehydration, Ethylene Glycol Regeneration and Injection Device, and Fuel Gas Skid in Akimom Gas Field |
Technical Parameter
| No. | Model | Medium | Flow rate (Nm3/h) | Exhaust pressure MPa | Motor power (kW) | Cooling method | Overall dimensions (mm) | Weights (kg) | |
| 1 | VW-3.5/1-18 | Natural gas | 420 | 1.8 | 55 | Closed water coole | d 4000×1800×2200 | 5000 | |
| 2 | DF-0.4/（2～6）-250 | Natural gas | 160 | 25 | 30 | Air-cooled | 2800×1800×1500 | 3500 | |
| 3 | DFD-1.36/(30～50)-250 | Natural gas | 4167 | 25 | 315 | Air-cooled | 8500×3700×4100 | 22000 | |
| 4 | DFW-3.7/(8～12)-52 | Natural gas | 2083 | 5.2 | 200 | Air-cooled | 6000×3400×2300 | 15000 | |
| 5 | DFW-5.3/3-15 | Natural gas | 1100 | 1.5 | 90 | Air-cooled | 6500×3000×2500 | 6000 | |
| 6 | DFWD-5.7/(0. 1～0.5)-40 | Natural gas | 75～365 | 4 | 90 | Air-cooled | 7000×3400×2500 | 100000 | |
| 7 | DFWD-5/(1.5～3.6)-14.2 | Natural gas | 700 | 1.42 | 90 | Air-cooled | 5000×3200×2200 | 6500 | |
| 8 | DW-9/3-35 | Natural gas | 2000 | 3.5 | 250 | Air-cooled | 4800×4000×2000 | 13000 | |
| 9 | MFWD-7/(10～30)-35 | Natural gas | 6250 | 3.5 | 315 | Air-cooled | 6300×3200×3200 | 16000 | |
| 10 | VF-1.4/(5～7)-250 | Natural gas | 500 | 25 | 110 | Air-cooled | 5000×2400×2100 | 6800 | |
The DFW-5.3/3-15 adopts a D-type balanced oil-free reciprocating structure with a two-stage double-acting compression design. Compared with conventional lubricated compressors, its oil-free compression chamber helps prevent lubricating oil from entering the gas stream, making it suitable for natural gas applications requiring cleaner gas handling.
The oil-free structure uses PTFE self-lubricating packing and a separated lubrication system to reduce the risk of oil contamination during compression. This design helps maintain natural gas quality and is suitable for LNG, petrochemical, and process gas applications where gas purity is important.
The DFW-5.3/3-15 is designed for natural gas compression with a flow rate of 1100Nm³/h, an inlet pressure of 0.3MPa.G, and a discharge pressure of 1.5MPa.G. The unit is driven by a 90kW motor and supplied as a skid-mounted package.
The D-type balanced structure helps reduce vibration during reciprocating operation and improves mechanical stability. Combined with optimized cylinder arrangement and axial valves, it supports stable gas flow and long-term industrial operation.
The skid-mounted design integrates the compressor and supporting components on a common base, which simplifies transportation, installation, and connection with customer process systems. It is suitable for industrial projects requiring compact equipment layout.
