Description
DF-0.45/(8-10)-250 CNG Compressor
High-Pressure Skid-Mounted CNG Compressor
The DF-0.45/(8-10)-250 CNG Compressor is a high-pressure, skid-mounted reciprocating piston compressor designed for CNG compression in CNG fueling stations, natural gas distribution systems, and industrial gas applications.
With a rated flow capacity of approximately 0.45 m³/min, an inlet pressure of 0.9 MPa.G, and a discharge pressure of up to 25 MPa.G, the compressor is designed to provide stable and reliable natural gas compression under demanding operating conditions.
The integrated skid package combines the main compressor, explosion-proof motor, gas circuit, cooling system, control system, safety equipment, and drainage arrangements into a compact package. This configuration simplifies installation and allows the compressor to be integrated efficiently into CNG stations and industrial gas systems.
The compressor can also be configured for continuous operation and frequent start-stop cycles, making it suitable for demanding environments including cold climates, dry regions, and locations where cooling water availability is limited.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | DF-0.45/(8-10)-250 |
| Compressor Type | Reciprocating Piston Compressor |
| Application | CNG / Natural Gas Compression |
| Rated Flow | 0.45 m³/min |
| Inlet Pressure | 0.9 MPa.G |
| Maximum Discharge Pressure | Up to 25 MPa.G |
| Installation | Skid-Mounted |
| Drive | Explosion-Proof Motor |
| Cooling | Natural Cylinder Cooling + Forced Air Cooling |
| Lubrication | Low-Oil Lubrication |
| Gas Circuit | Optimized Low-Velocity Gas Circuit |
| Primary Applications | CNG Stations, Gas Distribution, Industrial Gas Systems |
Final equipment configuration and operating parameters should be confirmed according to the project-specific technical specification.
Key Features
1. Low Surface Pressure Design for Extended Component Life
The compressor incorporates a low surface pressure design across key load-bearing components, including big-end bearing shells, small-end bushings, and crosshead sliding surfaces.
By reducing localized loading and associated thermal and mechanical stresses, the design helps minimize component wear and surface temperature rise.
This contributes to:
- Improved component durability
- Reduced mechanical wear
- Longer service intervals
- Stable continuous operation
- Lower maintenance requirements
2. Precision Piston Movement
Accurate piston movement is essential for reliable high-pressure reciprocating compression.
The DF-0.45/(8-10)-250 utilizes metal or engineering-plastic guide rings together with a planar self-aligning structure to support accurate linear piston movement.
This arrangement helps:
- Reduce piston movement deviation
- Minimize gas leakage
- Reduce wear on piston components
- Improve sealing performance
- Extend the service life of wear components
3. Low External Gas Leakage
The compressor incorporates high-performance sealing components designed to minimize external gas leakage during operation.
The specified external leakage rate is approximately 0.02%–0.03% of the gas supply volume, according to the supplied technical information.
The sealing arrangement includes components such as:
- PTFE-filled sealing rings
- Tin-bronze throttling rings
- Scraper rings
- High-performance packing components
Effective sealing helps improve operational efficiency while supporting safer gas handling.
4. Optimized Low-Velocity Gas Circuit
The compressor uses an optimized low-velocity gas circuit designed specifically for CNG compression applications.
The gas circuit configuration is intended to reduce unnecessary pressure losses and support stable gas flow through the compressor.
Key benefits include:
- Reduced pressure loss
- Stable gas flow
- Improved compression efficiency
- Reduced stress on gas circuit components
- Extended component service life
5. Natural Cylinder Cooling & Forced Air Cooling
The DF-0.45/(8-10)-250 combines natural cooling for the cylinders with forced-air cooling for the main compressor assembly.
This configuration provides an effective cooling solution without relying entirely on water-based cooling systems.
It can be particularly useful for:
- Continuous-duty CNG stations
- Frequent start-stop operation
- Cold-weather installations
- Dry and arid regions
- Water-scarce locations
- Remote and industrial sites
The final cooling arrangement should be selected according to the compressor configuration, ambient conditions, and project requirements.
6. Low-Oil Lubrication System
The compressor incorporates a low-oil lubrication design intended to provide adequate protection for critical mechanical components while minimizing oil carryover into the compressed gas.
According to the supplied specifications, the compressed gas oil content can be controlled to approximately 8 ppm (0.5 lb/MMSCF) under specified operating conditions.
This arrangement helps provide:
- Reduced lubricant carryover
- Cleaner compressed gas
- Protection of critical wear components
- Reduced contamination risk
- Improved compressor reliability
Integrated Skid-Mounted Design
The DF-0.45/(8-10)-250 is designed as an integrated skid-mounted compressor package.
Major components can be assembled on a common structural base, including:
- Reciprocating compressor
- Explosion-proof motor
- Gas piping and gas circuit
- Cooling system
- Control system
- Safety systems
- Drainage system
- Associated instrumentation
This integrated configuration simplifies transportation, positioning, installation, and commissioning at the project site.
CNG Compressor Applications
CNG Fueling Stations
The DF-0.45/(8-10)-250 can be integrated into CNG fueling stations serving commercial vehicles, industrial fleets, municipal fleets, and other natural gas-powered vehicles.
The high-pressure compression capability makes the unit suitable for systems where natural gas must be compressed before storage or dispensing.
Natural Gas Distribution Systems
The compressor can be used in selected natural gas distribution and gas boosting systems requiring stable high-pressure gas compression.
Remote & Off-Grid Facilities
The air-cooled configuration can be advantageous for facilities operating in locations where water availability is limited.
It can be considered for installations in:
- Remote areas
- Dry climates
- Arid regions
- Cold environments
- Water-constrained sites
Industrial Gas Systems
The compressor can provide high-pressure natural gas for industrial applications requiring a stable compressed gas supply.
Potential applications include selected manufacturing, energy, process, and power-generation systems.
Operational Reliability
The DF-0.45/(8-10)-250 is designed for demanding operating environments where compressor reliability and consistent gas supply are important.
Its design incorporates:
- Balanced reciprocating compression
- Low surface pressure on critical components
- Precision piston guidance
- High-performance sealing
- Low-oil lubrication
- Optimized gas flow
- Air-based cooling
- Integrated safety and control systems
Together, these features support stable compressor operation and help reduce maintenance requirements.
Safety & Control
The integrated compressor package can incorporate appropriate monitoring and protection systems for CNG applications.
Depending on the project configuration, these may include:
- Pressure monitoring
- Temperature monitoring
- Compressor protection
- Emergency shutdown
- Motor protection
- Gas leakage monitoring
- Safety interlocks
- Automatic shutdown logic
- Local control panel
- Remote monitoring interfaces
The final safety and control system should be configured according to the project design and applicable requirements.
Key Advantages
High-Pressure Compression
Designed to provide CNG compression up to 25 MPa.G.
Compact Skid Package
Main and auxiliary equipment are integrated into a single skid for simplified installation.
Low-Oil Compression
The low-oil lubrication arrangement helps reduce oil carryover into the compressed gas.
Efficient Cooling
Natural cylinder cooling combined with forced-air cooling provides a practical solution for demanding operating conditions.
Reduced Leakage
High-performance packing and sealing components help minimize external gas leakage.
Durable Construction
Low surface pressure and precision piston guidance help reduce mechanical wear.
Flexible Installation
Suitable for CNG stations, industrial facilities, remote sites, and water-constrained locations.
Why Choose Aegis Projects?
Aegis Projects Technology Pvt. Ltd. provides engineered solutions for CNG compressor systems, natural gas compressor skids, high-pressure gas compression, industrial gas systems, automation, instrumentation, and turnkey project execution.
Our project scope can include:
- Compressor package selection
- Skid integration
- Gas piping
- Valves and fittings
- Instrumentation
- Electrical systems
- PLC controls
- Safety systems
- Cooling systems
- Installation support
- Testing and commissioning
We can configure the compressor package according to the required gas flow, inlet pressure, discharge pressure, operating environment, cooling requirements, control architecture, and installation conditions.
Enquire About DF-0.45/(8-10)-250 CNG Compressor
Looking for a high-pressure CNG compressor for a filling station, natural gas distribution system, or industrial application?
Contact Aegis Projects Technology Pvt. Ltd. with your required flow rate, inlet pressure, discharge pressure, gas composition, operating conditions, and site requirements for a suitable CNG compression solution.
Aegis Projects Technology Pvt. Ltd. — CNG Compression, Natural Gas Systems & Industrial Automation Solutions.
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 | |
| 11 | ZW-0.82/(6～8)-20 | Hydrogen | 300 | 2.0 | 22 | Water-cooled | 2500×1500×1750 | 2000 | |
| 12 | W-3/0.1-150 | Hydrogen | 212 | 15 | 55 | Water-cooled | 6000×2700×2100 | 15000 | |
| 13 | MW-7.7/9.8-40 | Hydrogen | 4200 | 4.0 | 355 | Water-cooled | 7500×3600×2000 | 22000 | |
| 14 | MW-25.2/（1.5～1.7）-10 | Hydrogen | 3300 | 1.0 | 315 | Water-cooled | 8000×3000×2200 | 20000 | |
| 15 | PW-0.6/(10～15)-30 | Hydrogen | 0~560 | 3.0 | 30 | Mixed cooling | 2200×1800×1600 | 1800 | |
| 16 | PW-13.7/17-25 | Hydrogen | 820 | 2.5 | 30 | Mixed cooling | 4000×2700×2300 | 6000 | |
| 17 | D-0.26/（28～31）-150 | Hydrogen | 400 | 15 | 45 | Mixed cooling | 3800×3200×1950 | 4800 | |
| 18 | PW-13.7/17-25 | Hydrogen | 820 | 2.5 | 30 | Mixed cooling | 4000×2700×2300 | 6000 | |
| 19 | VW-14.3/7 | Hydrogen | 750 | 0.7 | 110 | Mixed cooling | 4800×2250×2100 | 8000 | |
| 20 | DW-7.6/（4～5.7）-6.5 | Hydrogen | 2000 | 0.65 | 55 | Mixed cooling | 3500×3000×2300 | 6000 | |
