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The DFW-5.3/3-15 oil-free reciprocating compressor from Bengbu United Compressor serves natural gas pressurization for LNG, petrochemical and environmental protection processes.Flow: 1100Nm³/h, inlet 0.3MPa.G, discharge 1.5MPa.G, 90kW motor. Size ~6500×3000×2500mm, weight ~6t. Skid-mounted compact structure fits harsh industrial long-term operation.
D-type balanced air-cooled two-stage double-acting modular unit
• Cylinders: HT250 for 1st stage, QT600-3 for 2nd stage, wear & pressure resistant
• PTFE self-lubricating packing, oil-free, no gas contamination
• Axial cylinder head valves for optimized gas flow and efficiency
Low vibration & noise, stable energy-saving running, compatible with intelligent control
Integrated skid for fast delivery and installation, fewer wearing parts for low maintenance
Customizable cooling, installation and drive modes to match on-site pressure & flow demands
Highlight Advantages
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| High compression efficiency with full automatic control system for unattended running. | Low vibration and noise, fewer consumable parts to guarantee long steady operation. | Simplified internal structure cuts routine inspection and repair workload. | All supporting units pre-assembled on one skid, easy to ship and install on site. |
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 |
Whole Machine Description
This D-type balanced water-cooled oil-free reciprocating compressor features two-row three-stage modular structure, equipped with multi-port gray cast iron crankcase with external drain ball valve, exclusive double intermediate body to prevent medium oil pollution, and cast iron/forged steel oil-free cylinders fitted with axial air valves for high gas transmission efficiency.
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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 | |
Applicable Medium
DFW-5.3/3-15 is customized for natural gas. Hydrogen and special process gases are covered by our dedicated special gas compressor models.
Maintenance Cycle
Few wearing parts and oil-free construction cut upkeep work. Routine inspection is required every 3000–5000 working hours without regular oil change.
Quality & Patents
It owns independent patents on piston rod thread protective sleeve and piston ring support structure, meeting international quality norms.
Shipping& Packaging
The DFW-5.3/3-15 high-efficiency natural gas compressor balances strong performance, long service life and flexible configuration. Get customized technical solutions by contacting our team.
