Water Injected Screw Compressor

The innovative water lubrication system completely eliminates the risk of oil contamination, ensuring clean, high-quality compressed air at all times while reducing maintenance costs and enhancing overall reliability. It guarantees pure, oil-free air, making it an ideal choice for applications with the highest purity and performance standards.

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Power Range

6kW~460kW | 8HP~615HP

Air Pressure

4 Bar~40 Bar | 25 CFM ~ 1765 CFM

Exhaust Volume

0.72~42m³/min | 25.43~1483.2CFM

Internal view of RUEGO oil-free screw air compressor showcasing its efficient motor and clean, oil-free compressed air system components.

Water Injected Screw Compressor: Durable and Pure Air Solution

The oil-free water lubrication system is designed with stainless steel for excellent durability and corrosion resistance, ensuring long service life. Advanced engineering design and innovative structure enable ultra-quiet operation and efficient heat dissipation.
The efficient cooling mechanism and self-cleaning and automatic water replacement functions keep internal components free from impurities, thereby achieving stable and consistent performance. With these features, water-lubricated screw compressors provide high reliability and uncompromising air purity, making them the best choice for industries where clean air and sustainability are crucial.

Schematic diagram of an oil-free screw air compressor.

Principle and Performance

Effortless Purity: The Water Circulation Advantage

The water circulation system lies at the heart of this oil-free water injected screw compressor, delivering pure, clean air with unmatched reliability. By using water as a natural lubricant and coolant, the system ensures consistent performance while maintaining air purity. A water-gas separator efficiently removes water from compressed air, while precision solenoid valves regulate water flow seamlessly.

Advanced self-cleaning and automatic water replacement features reduce maintenance efforts, keeping the system running smoothly and free of impurities. Equipped with smart water level sensors, it safeguards stable operation with minimal intervention. This eco-friendly design not only eliminates oil but also enhances durability and efficiency, making it a perfect choice for industries that demand clean and sustainable air solutions.

Pharmaceutical manufacturing
In the pharmaceutical industry, where absolute air purity is critical, the oil-free water injected screw compressor ensures clean, contaminant-free compressed air. Its innovative water-based lubrication eliminates oil carryover risks, safeguarding the production of sensitive medicines and medical devices. With a maximum pressure of 40 Bar, it supports high-pressure applications like sterile filling and packaging processes.
Food and beverage production
Maintaining hygiene and safety standards is essential for food and beverage production. water injected screw compressors provide 100% oil-free, clean air for applications such as bottling, food packaging and ingredient mixing. The self-cleaning system ensures consistent performance while reducing maintenance downtime, making it ideal for continuous operation in demanding environments.
Electronics and semiconductor manufacturing
The precision required for electronics and semiconductor production requires a contamination-free environment. water injected screw air compressor provide ultra-pure air to maintain product integrity during chip manufacturing, circuit assembly and coating processes. Their environmentally friendly design minimizes vibration and noise, supporting stable operation in sensitive workspaces.
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Technical Parameters of Water Injected Screw Compressor

* For higher specifications please contact our sales team.

Model: A08-A/W
Power: 8 kW / 11 HP
Lubricating Water: 10 L
Noise: 57±3 Db(A)
Air Outlet Pipe Diameter: 3/4"

Air Pressure & Volume Flow

Air pressure Volume flow
8 bar 1.05 m³/min
10 bar 0.8 m³/min

Size & Weight

Length*width*height Weight
800*800*1200 mm 300 kg
Model: A15-A/W
Power: 15 kW / 20 HP
Lubricating Water: 26 L
Noise: 60±3 Db(A)
Air Outlet Pipe Diameter: 1"

Air Pressure & Volume Flow

Air pressure Volume flow
8 bar 1.72 m³/min
10 bar 1.42 m³/min

Size & Weight

Length*width*height Weight
1200*755*1130 mm 420 kg
Model: A22-A/W
Power: 22 kW / 30 HP
Lubricating Water: 30 L
Noise: 63±3 Db(A)
Air Outlet Pipe Diameter: 1"

Air Pressure & Volume Flow

Air pressure Volume flow
8 bar 3.65 m³/min
10 bar 3.0 m³/min

Size & Weight

Length*width*height Weight
1400*900*1270 mm 620 kg
Model: A37-A/W
Power: 37 kW / 50 HP
Lubricating Water: 40 L
Noise: 66±3 Db(A)
Air Outlet Pipe Diameter: 1¼"

Air Pressure & Volume Flow

Air pressure Volume flow
8 bar 6.3 m³/min
10 bar 5.33 m³/min

Size & Weight

Length*width*height Weight
1500*1080*1505 mm 860 kg
Model: A55-A/W
Power: 55 kW / 75 HP
Lubricating Water: 100 L
Noise: 69±3 Db(A)
Air Outlet Pipe Diameter: 1¼"

Air Pressure & Volume Flow

Air pressure Volume flow
8 bar 10.01 m³/min
10 bar 7.9 m³/min

Size & Weight

Length*width*height Weight
1800*1360*1670 mm 1080 kg
Model: SH37KW/W
Power: 37 kW / 50 HP
Lubricating Water: 80 L
Noise: 66±3 Db(A)
Air Outlet Pipe Diameter: 1"

Air Pressure & Volume Flow

Air pressure Volume flow
40 bar 3.5 m³/min

Size & Weight

Length*width*height Weight
1800*1360*1710 mm 1200 kg
Model: SH65KW/W
Power: 65 kW / 90 HP
Lubricating Water: 120 L
Noise: 70±3 Db(A)
Air Outlet Pipe Diameter: 1"

Air Pressure & Volume Flow

Air pressure Volume flow
40 bar 6 m³/min

Size & Weight

Length*width*height Weight
1800*1360*1710 mm 1800 kg
Model: SH110KW/W
Power: 110 kW / 150 HP
Lubricating Water: 160 L
Noise: 72±3 Db(A)
Air Outlet Pipe Diameter: 1½"

Air Pressure & Volume Flow

Air pressure Volume flow
40 bar 10 m³/min

Size & Weight

Length*width*height Weight
3000*1560*1680 mm 2260 kg

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