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The compressor operates through a three-stage process to produce clean, oil-free air:
Intake Phase: Ambient air is drawn into the system through a high-efficiency air filter, which removes dust, debris, and other particles to protect internal components.
Compression Phase: Filtered air enters the compression section, where a pair of precision-machined helical rotors rotate to reduce air volume and increase pressure. During this stage, water is injected into the compression chamber—acting as a lubricant to minimize rotor friction and a coolant to absorb heat generated by compression, preventing overheating.
Exhaust Phase: The compressed air (now fully oil-free) is discharged through the exhaust section for use in downstream processes. The used water is either recycled (via a built-in treatment system) or safely disposed of, with no oil waste produced.


The compressor operates through a three-stage process to produce clean, oil-free air:
Intake Phase: Ambient air is drawn into the system through a high-efficiency air filter, which removes dust, debris, and other particles to protect internal components.
Compression Phase: Filtered air enters the compression section, where a pair of precision-machined helical rotors rotate to reduce air volume and increase pressure. During this stage, water is injected into the compression chamber—acting as a lubricant to minimize rotor friction and a coolant to absorb heat generated by compression, preventing overheating.
Exhaust Phase: The compressed air (now fully oil-free) is discharged through the exhaust section for use in downstream processes. The used water is either recycled (via a built-in treatment system) or safely disposed of, with no oil waste produced.


The compressor stands out with several competitive advantages:
Low Maintenance Costs: It eliminates the need for oil changes, oil filters, and oil-gas separators—cutting annual maintenance expenses to a fraction of traditional oil-lubricated compressors.
High Energy Efficiency: Its volumetric efficiency outperforms single-stage dry screw compressors by a significant margin, reducing electricity use and operational costs over time.
Environmental Friendliness: No waste oil is produced, and discharged water requires minimal treatment to meet environmental standards, aligning with sustainable manufacturing goals.
Stable Performance: The low-load rotor design reduces wear and tear, extending component life and ensuring reliable operation even in continuous 24/7 production cycles.
The compressor stands out with several competitive advantages:
Low Maintenance Costs: It eliminates the need for oil changes, oil filters, and oil-gas separators—cutting annual maintenance expenses to a fraction of traditional oil-lubricated compressors.
High Energy Efficiency: Its volumetric efficiency outperforms single-stage dry screw compressors by a significant margin, reducing electricity use and operational costs over time.
Environmental Friendliness: No waste oil is produced, and discharged water requires minimal treatment to meet environmental standards, aligning with sustainable manufacturing goals.
Stable Performance: The low-load rotor design reduces wear and tear, extending component life and ensuring reliable operation even in continuous 24/7 production cycles.
The QuietTech Water-Lubricated Oil-Free Compressor is tailored for industries demanding ultra-clean air:
Pharmaceutical Industry: Used for drug fermentation, capsule filling, and injection manufacturing, where oil contamination could render products unsafe or non-compliant.
Electronics Industry: Provides ultra-clean air for semiconductor lithography and circuit board welding, preventing oil-induced defects in sensitive components.
Food & Beverage Industry: Supports baking, filling, and packaging processes—ensuring no oil contaminates food products or violates hygiene regulations.
Medical Industry: Powers hospital oxygen supply systems, ventilators, and dental equipment, where oil-free air is critical for patient safety.
Textile Industry: Used in air-jet weaving and fiber processing, preventing oil stains on fabrics and maintaining product quality.
The QuietTech Water-Lubricated Oil-Free Compressor is tailored for industries demanding ultra-clean air:
Pharmaceutical Industry: Used for drug fermentation, capsule filling, and injection manufacturing, where oil contamination could render products unsafe or non-compliant.
Electronics Industry: Provides ultra-clean air for semiconductor lithography and circuit board welding, preventing oil-induced defects in sensitive components.
Food & Beverage Industry: Supports baking, filling, and packaging processes—ensuring no oil contaminates food products or violates hygiene regulations.
Medical Industry: Powers hospital oxygen supply systems, ventilators, and dental equipment, where oil-free air is critical for patient safety.
Textile Industry: Used in air-jet weaving and fiber processing, preventing oil stains on fabrics and maintaining product quality.
Yes, the compressor includes a water recycling system that filters and treats used lubricating water, minimizing consumption. Only a small amount of make-up water is needed to replace evaporation or minor losses, reducing water waste.
The QuietTech Water-Lubricated Oil-Free Compressor is significantly quieter. Its water-lubricated rotors and sound-dampening design reduce noise levels far below oil-lubricated compressors, making it suitable for indoor facilities where noise compliance is required.
The compressor uses standard industrial water (with minimal impurities) for lubrication. The built-in recycling system filters out debris, so no specialized treatment is needed—though using softened water in hard-water areas can help prevent mineral buildup.
Yes, the compressor includes a water recycling system that filters and treats used lubricating water, minimizing consumption. Only a small amount of make-up water is needed to replace evaporation or minor losses, reducing water waste.
The QuietTech Water-Lubricated Oil-Free Compressor is significantly quieter. Its water-lubricated rotors and sound-dampening design reduce noise levels far below oil-lubricated compressors, making it suitable for indoor facilities where noise compliance is required.
The compressor uses standard industrial water (with minimal impurities) for lubrication. The built-in recycling system filters out debris, so no specialized treatment is needed—though using softened water in hard-water areas can help prevent mineral buildup.
The QuietTech Water-Lubricated Oil-Free Compressor delivers three key functional benefits:
100% Oil-Free Air Output: Its water-lubricated design ensures no oil enters the compression chamber, meeting the strictest purity standards for industries like pharmaceuticals and semiconductors.
Temperature Regulation: The water injection system maintains optimal operating temperatures, preventing rotor damage from overheating and ensuring consistent compression efficiency.
Low-Noise Operation: The water-lubricated rotors reduce friction and vibration, while sound-dampening components further lower noise levels—making it suitable for indoor facilities where noise pollution is a concern.
| Oil-free Water Lubricated Screw Air Compressor | ||||||||||
| Model | Motor power | Maximium working pressure | FAD | Cooling water outlet/inlet diameter | Noise | Dimension L*W*H | Weight | Quantity of cooling water Inlet water 32℃ | Quantity of lubricating water | Air outlet |
| KW/HP | Bar | M3/min | DB | mm | KG | T/H | L | |||
| LY-5.5WPM | 5.5/7.5 | 8 | 0.3-0.78 | 3/4" | 57 | 800*800*1200 | 320 | 1.5 | 10 | 3/4" |
| 10.0 | 0.2-0.65 | |||||||||
| LY-7.5WPM | 7.5/10 | 8 | 0.35-1.17 | 3/4" | 57 | 800*800*1200 | 320 | 2 | 10 | 3/4" |
| 10.0 | 0.3-1.05 | |||||||||
| LY-11WPM | 11/15 | 8 | 0.54-1.72 | 1" | 60 | 1200*755*1130 | 400 | 2.5 | 26 | 3/4" |
| 10.0 | 0.45-1.42 | |||||||||
| LY-15WPM | 15/20 | 8 | 0.75-2.43 | 1" | 60 | 1200*755*1130 | 440 | 3.5 | 26 | 3/4" |
| 10.0 | 0.65-2.17 | |||||||||
| LY-18.5WPM | 18.5/25 | 8 | 0.9-3.13 | 1" | 63 | 1400*900*1270 | 640 | 4 | 30 | 1" |
| 10.0 | 0.9-2.82 | |||||||||
| LY-22WPM | 22/30 | 8 | 1.1-3.7 | 1" | 63 | 1400*900*1270 | 640 | 5 | 30 | 1" |
| 10.0 | 0.97-3.21 | |||||||||
| LY-30WPM | 30/40 | 8 | 1.55-5.2 | 1%4" | 66 | 1400*950*1380 1500*1080*1300 | 760 | 7 | 40 | 14" |
| 10.0 | 1.255-4.43 | |||||||||
| LY-37WPM | 37/50 | 8 | 1.91-6.50 | 1/4" | 66 | 1580*1000*1475 1500*1080*1300 | 880 | 9 | 40 | 1/4" |
| 10.0 | 1.60-5.33 | |||||||||
| LY-45WPM | 45/60 | 8 | 2.50-8.30 | 2" | 68 | 2050*1360*1688 1800*1360*1670 | 1050 | 10 | 90 | 2" |
| 10.0 | 1.91-6.30 | |||||||||
| LY-55WPM | 55/75 | 8 | 3.0-10.3 | 2" | 69 | 2050*1360*1688 1800*1360*1670 | 1100 | 12 | 100 | 2" |
| 10.0 | 2.60-8.55 | |||||||||
| LY-75WPM | 75/100 | 8 | 3.95-13.00 | 2" | 72 | 2050*1360*1688 1800*1360*1670 | 1230 | 18 | 100 | 2" |
| 10.0 | 3.40-11.50 | |||||||||
| LY-90WPM | 90/120 | 8 | 5.0-16.60 | 2" | 73 | 2200*1550*1800 | 2080 | 20 | 120 | 2%" |
| 10.0 | 4.30-14.66 | |||||||||
| LY-110WPM | 110/150 | 8 | 6.0-20.2 | 2" | 75 | 2200*1550*1800 | 2230 | 24 | 120 | 2%" |
| 10.0 | 5.0-16.66 | |||||||||
| LY-132WPM | 132/180 | 8 | 6.75-23.52 | 2" | 75 | 2200*1550*1800 | 2360 | 30 | 120 | 2%2" |
| 10.0 | 6.0-19.97 | |||||||||
| LY-160WPM | 160/220 | 8 | 8.5-28.11 | 3" | 77 | 2700*1830*1850 | 3900 | 35 | 160 | DN80 |
| 10.0 | 7.6-25.45 | |||||||||
| LY-185WPM | 185/250 | 8 | 10-31.32 | 3" | 77 | 2700*1830*1850 | 4050 | 38 | 160 | DN80 |
| 10.0 | 8.72-29.00 | |||||||||
| LY-200WPM | 200/270 | 8 | 11.2-36.75 | 4" | 78 | 2700*1830*1850 | 4200 | 42 | 200 | DN100 |
| 10.0 | 9.68-31.8 | |||||||||
| LY-220WPM | 220/300 | 8 | 12.2-39.6 | 4" | 79 | 2700*1830*1850 | 4400 | 47 | 200 | DN100 |
| 10.0 | 11.2-35.7 | |||||||||
| LY-250WPM | 250/340 | 8 | 13.5-45.0 | 4" | 79 | 2700*1830*1850 | 4800 | 53 | 200 | DN100 |
| 10.0 | 12.3-40.0 | |||||||||
The QuietTech Water-Lubricated Oil-Free Compressor delivers three key functional benefits:
100% Oil-Free Air Output: Its water-lubricated design ensures no oil enters the compression chamber, meeting the strictest purity standards for industries like pharmaceuticals and semiconductors.
Temperature Regulation: The water injection system maintains optimal operating temperatures, preventing rotor damage from overheating and ensuring consistent compression efficiency.
Low-Noise Operation: The water-lubricated rotors reduce friction and vibration, while sound-dampening components further lower noise levels—making it suitable for indoor facilities where noise pollution is a concern.
| Oil-free Water Lubricated Screw Air Compressor | ||||||||||
| Model | Motor power | Maximium working pressure | FAD | Cooling water outlet/inlet diameter | Noise | Dimension L*W*H | Weight | Quantity of cooling water Inlet water 32℃ | Quantity of lubricating water | Air outlet |
| KW/HP | Bar | M3/min | DB | mm | KG | T/H | L | |||
| LY-5.5WPM | 5.5/7.5 | 8 | 0.3-0.78 | 3/4" | 57 | 800*800*1200 | 320 | 1.5 | 10 | 3/4" |
| 10.0 | 0.2-0.65 | |||||||||
| LY-7.5WPM | 7.5/10 | 8 | 0.35-1.17 | 3/4" | 57 | 800*800*1200 | 320 | 2 | 10 | 3/4" |
| 10.0 | 0.3-1.05 | |||||||||
| LY-11WPM | 11/15 | 8 | 0.54-1.72 | 1" | 60 | 1200*755*1130 | 400 | 2.5 | 26 | 3/4" |
| 10.0 | 0.45-1.42 | |||||||||
| LY-15WPM | 15/20 | 8 | 0.75-2.43 | 1" | 60 | 1200*755*1130 | 440 | 3.5 | 26 | 3/4" |
| 10.0 | 0.65-2.17 | |||||||||
| LY-18.5WPM | 18.5/25 | 8 | 0.9-3.13 | 1" | 63 | 1400*900*1270 | 640 | 4 | 30 | 1" |
| 10.0 | 0.9-2.82 | |||||||||
| LY-22WPM | 22/30 | 8 | 1.1-3.7 | 1" | 63 | 1400*900*1270 | 640 | 5 | 30 | 1" |
| 10.0 | 0.97-3.21 | |||||||||
| LY-30WPM | 30/40 | 8 | 1.55-5.2 | 1%4" | 66 | 1400*950*1380 1500*1080*1300 | 760 | 7 | 40 | 14" |
| 10.0 | 1.255-4.43 | |||||||||
| LY-37WPM | 37/50 | 8 | 1.91-6.50 | 1/4" | 66 | 1580*1000*1475 1500*1080*1300 | 880 | 9 | 40 | 1/4" |
| 10.0 | 1.60-5.33 | |||||||||
| LY-45WPM | 45/60 | 8 | 2.50-8.30 | 2" | 68 | 2050*1360*1688 1800*1360*1670 | 1050 | 10 | 90 | 2" |
| 10.0 | 1.91-6.30 | |||||||||
| LY-55WPM | 55/75 | 8 | 3.0-10.3 | 2" | 69 | 2050*1360*1688 1800*1360*1670 | 1100 | 12 | 100 | 2" |
| 10.0 | 2.60-8.55 | |||||||||
| LY-75WPM | 75/100 | 8 | 3.95-13.00 | 2" | 72 | 2050*1360*1688 1800*1360*1670 | 1230 | 18 | 100 | 2" |
| 10.0 | 3.40-11.50 | |||||||||
| LY-90WPM | 90/120 | 8 | 5.0-16.60 | 2" | 73 | 2200*1550*1800 | 2080 | 20 | 120 | 2%" |
| 10.0 | 4.30-14.66 | |||||||||
| LY-110WPM | 110/150 | 8 | 6.0-20.2 | 2" | 75 | 2200*1550*1800 | 2230 | 24 | 120 | 2%" |
| 10.0 | 5.0-16.66 | |||||||||
| LY-132WPM | 132/180 | 8 | 6.75-23.52 | 2" | 75 | 2200*1550*1800 | 2360 | 30 | 120 | 2%2" |
| 10.0 | 6.0-19.97 | |||||||||
| LY-160WPM | 160/220 | 8 | 8.5-28.11 | 3" | 77 | 2700*1830*1850 | 3900 | 35 | 160 | DN80 |
| 10.0 | 7.6-25.45 | |||||||||
| LY-185WPM | 185/250 | 8 | 10-31.32 | 3" | 77 | 2700*1830*1850 | 4050 | 38 | 160 | DN80 |
| 10.0 | 8.72-29.00 | |||||||||
| LY-200WPM | 200/270 | 8 | 11.2-36.75 | 4" | 78 | 2700*1830*1850 | 4200 | 42 | 200 | DN100 |
| 10.0 | 9.68-31.8 | |||||||||
| LY-220WPM | 220/300 | 8 | 12.2-39.6 | 4" | 79 | 2700*1830*1850 | 4400 | 47 | 200 | DN100 |
| 10.0 | 11.2-35.7 | |||||||||
| LY-250WPM | 250/340 | 8 | 13.5-45.0 | 4" | 79 | 2700*1830*1850 | 4800 | 53 | 200 | DN100 |
| 10.0 | 12.3-40.0 | |||||||||