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Eco-Silent High-Purity Water-Lubricated Compressor

The oil-free water-lubricated air compressor is an innovative compressed air device that utilizes groundbreaking water lubrication technology to replace traditional oil-lubricated systems. As a new generation of environmentally friendly air compressors, it perfectly meets the stringent demand for completely oil-free compressed air in industrial applications. Below is a detailed introduction to this equipment.
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Working Principles


Water-Lubrication & Sealing Mechanism

A precision-engineered water injection system supplies specially treated purified water to the compression chamber during operation. This water forms a uniform molecular protective film on the metal surfaces of the rotors and cylinders, serving dual roles: as a lubricant to reduce friction and as a sealant to prevent air leakage. Unlike oil, water leaves no residues, ensuring the compressed air remains oil-free.


Heat Dissipation Through Water Conductivity

Water’s excellent thermal conductivity rapidly absorbs and dissipates the heat generated during compression. This reduces the compressor’s operating temperature significantly compared to oil-lubricated models, preventing overheating and maintaining consistent efficiency—even during long working cycles.


Oil-Free Compression Cycle

By eliminating oil from the compression process, the system avoids the risk of oil contamination in the compressed air. The final air output meets the ISO 8573-1 Class 0 standard (the highest for oil-free air), making it safe for applications where even trace oil could compromise product quality or safety.


air compressor
Eco-Silent High-Purity Water-Lubricated Compressor
exhibition




Characteristic Advantages


Absolute Oil-Free Guarantee

With 0 ppm oil content in the compressed air, the compressor fully complies with ISO 8573-1 Class 0—the gold standard for oil-free air. This eliminates the risk of oil contamination, making it indispensable for food, pharmaceutical, and electronics industries.


Significant Energy & Cost Savings

By removing oil separators and eliminating the need for oil changes, the compressor reduces annual operational costs by a substantial margin. The water-lubricated technology and variable frequency control also boost system efficiency, lowering electricity consumption compared to traditional oil-lubricated models.


Exceptional Durability & Corrosion Resistance

Key components, including nano-ceramic-coated cylinders and special stainless steel rotors, are resistant to corrosion and wear. These materials withstand the constant contact with water, extending the compressor’s service life to tens of thousands of hours.


Low Noise & Environmental Friendliness

The EcoSilent design minimizes noise during operation, creating a quieter working environment—critical for indoor facilities like food processing plants or laboratories. Additionally, the absence of oil reduces waste generation and environmental impact, aligning with sustainable industrial practices.


 



Oil-free Water Lubricated Screw Air Compressor
Model Motor
power
Maximiu
m
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



Applications


Food & Beverage Industry

In food processing and beverage production, the compressor supplies oil-free air for material conveying, packaging, and filling. It prevents oil contamination of food products, ensuring compliance with strict food safety regulations and maintaining product freshness.


Pharmaceutical Industry

During pharmaceutical manufacturing (e.g., fermentation, drying, filling), sterile oil-free air is essential to avoid compromising drug purity. The compressor’s output meets pharmaceutical hygiene standards, supporting the production of safe, high-quality medications.


Electronics Industry

Chip manufacturing and circuit board assembly require high-purity air to prevent oil particles or impurities from damaging sensitive electronic components. The compressor’s 100% oil-free air ensures the precision and reliability of electronic products.


Textile Industry

For air-jet looms (used in weaving), the compressor provides clean air for weft insertion. Without oil mist, textiles remain free from stains or defects, improving product quality and reducing waste in weaving and finishing processes.


Environmental Protection Industry

In sewage treatment, the compressor supplies air for aeration systems, where oil-free air prevents contamination of wastewater and ensures the efficiency of biological treatment processes. It also supports eco-friendly agricultural applications like precision spraying.



FAQ


What makes your EcoSilent Water-Lubricated Compressor better than dry oil-free models?

Our compressor uses water-lubricated technology instead of dry friction, which reduces wear on components and improves energy efficiency. It also delivers more stable oil-free air (meeting ISO 8573-1 Class 0) and requires less maintenance than dry models, lowering long-term costs.


What warranty do you offer for this compressor?

We provide a two-year warranty for the entire compressor, covering defects in materials and workmanship. Additionally, we offer technical support tailored to your operational needs, ensuring the equipment runs smoothly throughout its service life.


Can the compressor be customized for specific industry needs?

Yes. We offer customization options, including adjustments to air pressure, flow rate, and control systems, to meet the unique requirements of industries like pharmaceuticals (higher sterility) or electronics (higher air purity).


How do you ensure the water used in the system is safe and effective?

The integrated triple water treatment system (softening, filtration, sterilization) removes impurities and microorganisms. Combined with online water quality monitoring, this ensures the water remains clean and effective for lubrication and sealing at all times.


Is the compressor easy to install and integrate into existing production lines?

Yes. The compressor features a compact design and flexible installation options, allowing it to fit into most existing production layouts. Our team provides installation guidance and can assist with integrating the compressor into your existing air supply system.


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+86-185-1600-2261
+86-135-0168-1255

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86-185-1600-2261
86-135-0168-1255

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