DW-3.8/(4~6)-14
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The DW-3.8/(4~6)-14 Nitrogen Compressor is developed for industrial nitrogen pressure boosting and process gas supply applications.
In many industrial production systems, nitrogen is required as an inert gas, protective gas, or process medium with stable pressure and continuous availability. When the existing nitrogen source cannot directly meet equipment requirements, a nitrogen compressor is used to increase pressure and maintain a reliable gas supply.
The DW-3.8/(4~6)-14 uses nitrogen as the compression medium and provides a flow capacity of 1200 Nm³/h. The compressor operates with an inlet pressure of 0.4~0.6 MPa.G and discharge pressure of 1.4 MPa.G. Driven by a 75 kW motor, it adopts a D-type balanced reciprocating piston structure with water cooling and partial oil-free lubrication.
The compressor is suitable for chemical, petrochemical, industrial gas, and manufacturing systems requiring nitrogen pressure control.
The DW-3.8/(4~6)-14 is configured specifically for nitrogen compression applications. Its design focuses on maintaining suitable compression conditions for nitrogen gas in industrial process systems.
Dedicated Nitrogen Service
The compressor uses nitrogen as the compression medium and is configured according to nitrogen operating conditions, including flow capacity, inlet pressure, and discharge pressure requirements.
Balanced Compression Structure
The D-type symmetrical balanced reciprocating design is applied to this model to support stable piston movement during nitrogen compression.
Clean Gas Compression Design
The partial oil-free lubrication configuration is used for the nitrogen compression process to reduce the possibility of oil contact with compressed gas areas.
Application Area
The DW-3.8/(4~6)-14 Nitrogen Compressor can be used in industrial systems requiring nitrogen compression.
Typical application areas include:
Chemical industry process systems
Petrochemical production facilities
Industrial gas supply systems
Manufacturing processes requiring nitrogen compression
The final application depends on the customer's nitrogen conditions and operating requirements.
Highlight Advantages
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| High reliability and stable nitrogen supply for continuous industrial operation. | Low maintenance requirements with reduced vibration and noise during operation. | Skid-mounted design simplifies transportation and on-site installation. | Optimized components ensure long service life and operating efficiency. |
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
The DW-3.8/(4~6)-14 Nitrogen Compressor adopts a D-type symmetrical balanced reciprocating piston structure with water cooling and partial oil-free lubrication. The skid-mounted design allows easy transportation and installation.
The optimized structure and oil-free compression design help prevent nitrogen contamination and ensure stable gas quality. Reliable sealing, lubrication, and transmission systems provide efficient and long-term operation.
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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 |
Technical Parameter
| No. | Model | Medium | Flow rate (Nm3/h) | Exhaust pressure (MPa.G) | Motor power (kW) | Cooling method | Overall dimensions (mm) | Weights (kg) | |
| 1 | DW-1.6/(8～12)-120 | Hydrogen | 800 | 12 | 160 | Water-cooled | 5800×3000×2300 | 8500 | |
| 2 | DW-1.8/15-30 | Hydrogen | 1500 | 3.0 | 75 | Water-cooled | 3200×3000×1850 | 5800 | |
| 3 | DW-6.74(3.3)/0.7(5～12)-12 | Hydrogen | 600 | 1.2 | 90 | Water-cooled | 5000×3200×2100 | 8000 | |
| 4 | DW-17.9/(4～5)-6.5 | Hydrogen | 1270 | 0.65 | 132 | Water-cooled | 3500×3000×2300 | 8000 | |
| 5 | DW-1.8/15-30 | Hydrogen | 1500 | 3.0 | 75 | Water-cooled | 3200×3000×1850 | 5800 | |
| 6 | DW-9.55/0.03-16 | Hydrogen | 515 | 1.6 | 90 | Water-cooled | 3500×3200×2500 | 6500 | |
| 7 | DW-96.5/（ 15～23 ）-（ 21~29 ） | Hydrogen | 4500 | 2. 1～2.9 | 185 | Water-cooled | 5000×3000×2500 | 12000 | |
| 8 | DW-48/（ 15～23 ）-（ 21~29 ） | Hydrogen | 2642～4500 | 2. 1～2.9 | 55 | Water-cooled | 4000×2700×2300 | 6000 | |
| 9 | D-0.57/16-200 | Hydrogen | 500 | 20 | 75 | Water-cooled | 5800×3200×2350 | 9000 | |
| 10 | ZW-0. 18/15-22 | Hydrogen | 150 | 2.2 | 11 | Water-cooled | 2200×1600×1700 | 2000 | |
Project Case
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| Alibek oilfield in Southern Kazakhstan | Zaozhuang CNG compressor project of Chengdu Shenliang Technology Co., Ltd. | Beijing Hongke Qingneng Technology Co., Ltd. associated gas compressor for Shanxi Yan'an 60000 m3 project |
What makes the DW-3.8/(4~6)-14 suitable for nitrogen compression?
The DW-3.8/(4~6)-14 is configured with nitrogen as the compression medium and is designed for industrial systems where nitrogen compression is required under specific pressure conditions.
The partial oil-free lubrication configuration is applied to the compressor design to meet the requirements of nitrogen compression applications.
The D-type balanced reciprocating structure provides a balanced arrangement for the piston compression system and is used in this model for industrial nitrogen compression.
The compressor configuration can be selected according to nitrogen flow requirements, inlet pressure, discharge pressure, and specific operating conditions.
