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The LGF-2VF-20-500-P Screw-Piston Tandem High-Pressure Air Compressor redefines industrial air supply through its innovative dual-compression technology. By combining a screw compressor for primary compression and a piston booster for final pressurization, this unit achieves exceptional efficiency and pressure output while minimizing energy consumption. Tailored for high-demand, space-constrained environments, it delivers 50MPa (500bar) pressure and 20Nm³/min air flow, with air purity reaching oil residue ≤0.001ppm . Its compact skid-mounted design and low-noise operation make it ideal for industries ranging from petrochemical processing to precision manufacturing, where reliability, air quality, and footprint efficiency are critical.
• Hybrid Compression Process: The screw compressor first raises ambient air to 15bar, then the V-type piston compressor boosts it to 50MPa, reducing energy consumption by 25% compared to single-stage piston compressors .
• Consistent Air Flow: Delivers a stable 20Nm³/min (706CFM) flow rate, supporting continuous operation of multiple high-pressure tools or production lines without pressure fluctuations .
• Energy Efficiency: Equipped with variable speed drive (VSD) technology that adjusts motor speed to match air demand, cutting idle energy waste by up to 30% .
• Oil-Free Air Supply: Integrates a multi-stage purification system (air-water separator, oil removal filter, and dryer) to achieve oil residue ≤0.001ppm and a pressure dew point of -23℃, meeting ISO 8573-1 Class 0 standards .
• Durable Componentry: The screw section uses hardened steel rotors with a 10-year service life, while the piston section features wear-resistant rings that reduce maintenance frequency by 40% .
• Stable Operation: Anti-vibration mounts and integrated cooling systems keep inter-stage temperatures below 80℃, extending component life and reducing downtime .
• Compact Footprint: The integrated skid-mounted design reduces installation space by 30% compared to separate screw and piston systems, fitting into narrow factory aisles or offshore platforms .
• Low Noise Performance: Fully enclosed component housing and sound-dampening materials limit noise to ≤75dB, compliant with workplace noise regulations for urban manufacturing facilities .
• Easy Maintenance: Horizontal component layout provides full access to cylinder heads, valves, and filters, cutting maintenance time by 50% compared to vertical designs .
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| Has high efficiency, strong reliability, and high degree of automation; | Less vulnerable parts, low vibration, low noise, and easy operation and maintenance | The main and auxiliary equipment of the compressor are all installed on the sled, running smoothly and reliably. The overall sled installation is convenient for the transportation and installation of the compressor | The entire machine components are carefully designed |
 | 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 |
| |
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:
 |  |  |
| Metal cabin | Wooden box | Soundproof cabin |
 |  |  |
| 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 |
| No. | Model | Medium | Flow rate (Nm3/h) | Inlet pressure (MPa.G) | Exhaust pressure (MPa.G) | Speed (r/min) | Motor power (kW) | Cooling method | Overall dimensions (mm) | Weights (kg) |
| 1 | SF-10/250 | Air | 600 | Atmospheric | 25.0 | 1330 | 258.5 (Diesel) | Air-cooled | 7000*2200*2200 | 8500 |
| 2 | SF-10/150 | Air | 600 | Atmospheric | 15.0 | 1330 | 258.5 (Diesel) | Air-cooled | 7000*2200*2200 | 8500 |
| 3 | SF-7.5/250 | Air | 450 | Atmospheric | 25.0 | 980 | 160 (Diesel) | Air-cooled | 6500*2200*2200 | 7000 |
| 4 | SF-7.5/150 | Air | 450 | Atmospheric | 15.0 | 980 | 132 (Diesel) | Air-cooled | 6500*2200*2200 | 7000 |
| 5 | SF-8.5/250 | Air | 510 | Atmospheric | 15.0 | 980 | 200 (Diesel) | Air-cooled | 7000*2200*2200 | 8500 |
| 6 | W-10/60 | Air | 600 | Atmospheric | 6.0 | 1330 | 132 (Diesel) | Air-cooled | 6000*2200*2200 | 7000 |
Project Case
 |  |  |
| Ukraine Project | Beijing Hongke Qingneng Technology Co., Ltd. associated gas compressor for Shanxi Yan'an 60000 m3 project | Ningxia Zhongneng new materials engineering |
The screw compressor excels at low-pressure, high-flow compression with minimal energy loss, while the piston compressor specializes in high-pressure boosting. This division of labor reduces the compression ratio per stage, lowering heat generation and energy consumption by 25% compared to single-stage piston compressors. The design also reduces wear on piston components, extending their lifespan .
The screw rotor assembly requires inspection every 10,000 operating hours, while the piston rings and valves need replacement every 8,000 hours. The air purification filters (oil removal, particulate) should be changed every 2,000 hours to maintain air quality. The VSD motor requires routine maintenance every 5,000 hours .
Yes. We offer optional upgrades, including a HEPA filter for particulate removal (down to 0.1μm) and a molecular sieve dryer for lower dew points (as low as -40℃). These customizations suit industries like pharmaceuticals or electronics that require stricter air purity standards .
The compressor requires a flat, load-bearing surface (minimum 500kg/m²) and a 380V/3-phase power supply. For outdoor installation, a weatherproof cover is recommended, but the unit itself is rated IP54 for dust and water resistance. Cooling air flow of 150m³/min is needed to maintain optimal operating temperatures .
The LGF-2VF-20-500-P Screw-Piston Tandem High-Pressure Air Compressor redefines industrial air supply through its innovative dual-compression technology. By combining a screw compressor for primary compression and a piston booster for final pressurization, this unit achieves exceptional efficiency and pressure output while minimizing energy consumption. Tailored for high-demand, space-constrained environments, it delivers 50MPa (500bar) pressure and 20Nm³/min air flow, with air purity reaching oil residue ≤0.001ppm . Its compact skid-mounted design and low-noise operation make it ideal for industries ranging from petrochemical processing to precision manufacturing, where reliability, air quality, and footprint efficiency are critical.
• Hybrid Compression Process: The screw compressor first raises ambient air to 15bar, then the V-type piston compressor boosts it to 50MPa, reducing energy consumption by 25% compared to single-stage piston compressors .
• Consistent Air Flow: Delivers a stable 20Nm³/min (706CFM) flow rate, supporting continuous operation of multiple high-pressure tools or production lines without pressure fluctuations .
• Energy Efficiency: Equipped with variable speed drive (VSD) technology that adjusts motor speed to match air demand, cutting idle energy waste by up to 30% .
• Oil-Free Air Supply: Integrates a multi-stage purification system (air-water separator, oil removal filter, and dryer) to achieve oil residue ≤0.001ppm and a pressure dew point of -23℃, meeting ISO 8573-1 Class 0 standards .
• Durable Componentry: The screw section uses hardened steel rotors with a 10-year service life, while the piston section features wear-resistant rings that reduce maintenance frequency by 40% .
• Stable Operation: Anti-vibration mounts and integrated cooling systems keep inter-stage temperatures below 80℃, extending component life and reducing downtime .
• Compact Footprint: The integrated skid-mounted design reduces installation space by 30% compared to separate screw and piston systems, fitting into narrow factory aisles or offshore platforms .
• Low Noise Performance: Fully enclosed component housing and sound-dampening materials limit noise to ≤75dB, compliant with workplace noise regulations for urban manufacturing facilities .
• Easy Maintenance: Horizontal component layout provides full access to cylinder heads, valves, and filters, cutting maintenance time by 50% compared to vertical designs .
| | | |
| Has high efficiency, strong reliability, and high degree of automation; | Less vulnerable parts, low vibration, low noise, and easy operation and maintenance | The main and auxiliary equipment of the compressor are all installed on the sled, running smoothly and reliably. The overall sled installation is convenient for the transportation and installation of the compressor | The entire machine components are carefully designed |
| 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 |
| |
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:
| | |
| Metal cabin | Wooden box | Soundproof cabin |
| | |
| 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 |
| No. | Model | Medium | Flow rate (Nm3/h) | Inlet pressure (MPa.G) | Exhaust pressure (MPa.G) | Speed (r/min) | Motor power (kW) | Cooling method | Overall dimensions (mm) | Weights (kg) |
| 1 | SF-10/250 | Air | 600 | Atmospheric | 25.0 | 1330 | 258.5 (Diesel) | Air-cooled | 7000*2200*2200 | 8500 |
| 2 | SF-10/150 | Air | 600 | Atmospheric | 15.0 | 1330 | 258.5 (Diesel) | Air-cooled | 7000*2200*2200 | 8500 |
| 3 | SF-7.5/250 | Air | 450 | Atmospheric | 25.0 | 980 | 160 (Diesel) | Air-cooled | 6500*2200*2200 | 7000 |
| 4 | SF-7.5/150 | Air | 450 | Atmospheric | 15.0 | 980 | 132 (Diesel) | Air-cooled | 6500*2200*2200 | 7000 |
| 5 | SF-8.5/250 | Air | 510 | Atmospheric | 15.0 | 980 | 200 (Diesel) | Air-cooled | 7000*2200*2200 | 8500 |
| 6 | W-10/60 | Air | 600 | Atmospheric | 6.0 | 1330 | 132 (Diesel) | Air-cooled | 6000*2200*2200 | 7000 |
Project Case
| | |
| Ukraine Project | Beijing Hongke Qingneng Technology Co., Ltd. associated gas compressor for Shanxi Yan'an 60000 m3 project | Ningxia Zhongneng new materials engineering |
The screw compressor excels at low-pressure, high-flow compression with minimal energy loss, while the piston compressor specializes in high-pressure boosting. This division of labor reduces the compression ratio per stage, lowering heat generation and energy consumption by 25% compared to single-stage piston compressors. The design also reduces wear on piston components, extending their lifespan .
The screw rotor assembly requires inspection every 10,000 operating hours, while the piston rings and valves need replacement every 8,000 hours. The air purification filters (oil removal, particulate) should be changed every 2,000 hours to maintain air quality. The VSD motor requires routine maintenance every 5,000 hours .
Yes. We offer optional upgrades, including a HEPA filter for particulate removal (down to 0.1μm) and a molecular sieve dryer for lower dew points (as low as -40℃). These customizations suit industries like pharmaceuticals or electronics that require stricter air purity standards .
The compressor requires a flat, load-bearing surface (minimum 500kg/m²) and a 380V/3-phase power supply. For outdoor installation, a weatherproof cover is recommended, but the unit itself is rated IP54 for dust and water resistance. Cooling air flow of 150m³/min is needed to maintain optimal operating temperatures .
