China OEM Silent A/C Water Cooled Oil Free Rotary Screw Air Compressor with Good quality

Product Description

Silent A/C Water Cooled Oil Free Rotary Screw Air Compressor Advantages:

1.Clean air 100% oil-free
2.Use water instead of oil, higher cooling efficiency and compression efficiency
3.Optimal isothermal compression
4.Powerful MAM microcomputer controller and touch screen
5.Reasonable Structure, with perfect balancing
6.Components made of anti-rust and anti-corrosion materials ensure the durability
7.Significant energy saving, environmental-friendly and pollution-free
8.Designed especially for medical, pharmacy, instrument, coating, chemical industry and food processing, etc.

Technical Parameters Of Silent A/C Water Cooled Oil Free Rotary Screw Air Compressor :

Model Maximum 
working pressure
Capacity FAD Installed 
motor power
Noise Dimensions
Weight Air outlet 
bar(e) psig m³/min cfm kW hp dB(A) L*W*H kg
DAW-7A 8 116 1.24 43.8 7.5 10 58 1550*775*1445 630 3/4″
10 145 1.1 38.8 7.5 10
DAW-11A 8 116 1.67 59 11 15 58 1550*775*1445 650 3/4″
10 145 1.43 50.5 11 15
12.5 181 1.1 38.8 11 15
DAW-15A 8 116 2.27 80.2 15 20 63 1400*1000*1200   900 1″
10 145 2.05 72.4 15 20
12.5 181 1.51 53.3 15 20
DAW-18A 8 116 3.01 106.3 18.5 25 65 1400*1000*1200   970 1″
10 145 2.65 93.6 18.5 25
12.5 181 2.07 73.1 18.5 25
DAW-22A 8 116 3.46 122.2 22 30 65 1400*1000*1200 1000 1″
10 145 3.08 108.8 22 30
12.5 181 2.59 91.5 22 30
DAW-30A 8 116 5.4 190.7 30 40 66 1850*1150*1300 1250 1-1/2″
10 145 4.54 160.3 30 40
12.5 181 4.11 145.1 30 40
DAW-37A 8 116 6.26 221 37 50 67 1850*1150*1300 1297 1-1/2″
10 145 5.51 194.6 37 50
12.5 181 5.19 183.3 37 50
DAW-45A/W 8 116 7.56 266.9 45 60 68 1850*1150*1300 1500 2″
10 145 6.59 232.7 45 60
12.5 181 5.94 209.7 45 60
DAW-55A/W 8 116 9.61 339.3 55 75 70 1900*1500*1700 1596 2″
10 145 8.75 309 55 75
12.5 181 7.54 266.2 55 75
DAW-75A/W 8 116 12.42 438.6 75 100 73 1900*1500*1700 1790 2″
10 145 11.34 400.4 75 100
12.5 181 9.83 347.1 75 100
DAW-90A/W 8 116 16.19 571.7 90 120 73 1900*1500*1700 2250 2-1/2″
10 145 14.42 509.2 90 120
12.5 181 12.23 431.8 90 120
DAW-110W 8 116 19.28 680.8 110 150 78  2150*1600*1800 2270 2-1/2″
10 145 16.74 591.1 110 150
12.5 181 15 529.7 110 150
DAW-132W 8 116 22.06 778.9 132 175 78  2150*1600*1800 2330 2-1/2″
10 145 20.25 715 132 175
12.5 181 18.14 640.5 132 175
DAW-160W 8 116 28.66 1012 160 215 78  2150*1600*1800 3660 3″
10 145 24.36 860.2 160 215
12.5 181 22.03 777.9 160 215
DAW-200W 8 116 36.39 1284.9 200 270 78 3100*1700*2090 3690 4″
10 145 29.81 1052.6 200 270
12.5 181 27.43 968.6 200 270
DAW-250W 8 116 42.6 1504.2 250 350 79 3100*1700*2090 3900 4″
10 145 38.75 1368.3 250 350
12.5 181 34.43 1215.7 250 350


Q1: Are you factory or trade company?  
A1: We are factory.

Q2: What the exactly address of your factory? 
A2: No. 366, YangzhuangBang Street, Pingxing Rd., Xindai Town,HangZhou, ZHangZhoug Province, China 

Q3: Warranty terms of your machine? 
A3: One year warranty for the machine and technical support according to your needs.

Q4: Will you provide some spare parts of the machines? 
A4: Yes, of course.

Q5: How long will you take to arrange production? 
A5: 380V 50HZ we can delivery the goods within 10 days. Other electricity or other color we will delivery within 22 days

Q6: Can you accept OEM orders? 
A6: Yes, with professional design team, OEM orders are highly welcome.


Lubrication Style: Lubricated
Cooling System: Air Cooling
Cylinder Position: Vertical


.shipping-cost-tm .tm-status-off{background: none;padding:0;color: #1470cc}

Shipping Cost:

Estimated freight per unit.

about shipping cost and estimated delivery time.
Payment Method:


Initial Payment

Full Payment
Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

air compressor

How Do Water-Lubricated Air Compressors Impact Compressed Air Quality?

Water-lubricated air compressors can have an impact on the quality of the compressed air they produce. Here’s a detailed explanation of how water-lubricated air compressors can affect compressed air quality:

Moisture Content:

  • Condensation: Water-lubricated compressors introduce moisture into the compressed air system. During the compression process, as the air cools downstream, moisture can condense and accumulate. This moisture can lead to issues such as corrosion, rust, and contamination of downstream equipment or processes.
  • Water Carryover: If the compressor’s water separation mechanisms are not efficient or if there are malfunctions in the water removal systems, water droplets or mist may carry over into the compressed air. This can negatively impact the quality of the compressed air and introduce moisture-related issues downstream.


  • Oil Contamination: In some water-lubricated compressors, there is a potential for oil to mix with the water used for lubrication. If oil and water emulsify or if there are leaks in the compressor system, oil contamination may occur. Oil-contaminated compressed air can have adverse effects on downstream processes, equipment, and products. It can lead to contamination, reduced performance of pneumatic components, and potential health and safety concerns.
  • Particulate Contamination: Water-lubricated compressors can introduce particulate matter, such as sediment, debris, or rust, into the compressed air system. This can occur if the water supply or water treatment systems are not adequately filtered or maintained. Particulate contamination can clog or damage pneumatic equipment, affect product quality, and cause operational issues in downstream applications.

Preventive Measures:

  • Water Separation: Water-lubricated compressors employ various water separation mechanisms to remove moisture from the compressed air. This includes moisture separators, water traps, or coalescing filters that are specifically designed to capture and remove water droplets or mist from the compressed air stream. Regular maintenance and inspection of these separation systems are necessary to ensure their proper functioning.
  • Air Treatment: Additional air treatment components, such as air dryers or desiccant systems, can be installed downstream of water-lubricated compressors to further reduce moisture content in the compressed air. These systems help to remove moisture that may have carried over from the compressor and ensure that the compressed air meets the required dryness standards for specific applications.
  • Proper Maintenance: Regular maintenance of water-lubricated compressors is essential to minimize the potential impact on compressed air quality. This includes routine inspection, cleaning, and replacement of filters, lubrication systems, and water separation components. Addressing any leaks, malfunctioning components, or system issues promptly can help maintain the integrity of the compressed air and prevent contamination or excessive moisture levels.

By implementing appropriate water separation mechanisms, air treatment systems, and maintenance practices, the impact of water-lubricated air compressors on compressed air quality can be minimized. It is important to consider the specific requirements of the application and follow industry standards and guidelines to ensure the desired compressed air quality is achieved.

air compressor

How Do Water-Lubricated Air Compressors Compare in Terms of Maintenance Costs?

When comparing water-lubricated air compressors to other types of compressors, there are several factors that can influence the maintenance costs. Here’s a detailed explanation of how water-lubricated air compressors compare in terms of maintenance costs:

Initial Investment:

  • Higher Initial Cost: Water-lubricated air compressors tend to have a higher initial cost compared to oil-lubricated compressors. This is primarily due to the additional components required for the water-lubrication system, such as water pumps, filters, and separators. The higher initial investment can impact the overall cost of the compressor system.

Lubrication System Maintenance:

  • Water Treatment and Filtration: Water-lubricated compressors may require additional maintenance for water treatment and filtration systems. Regular monitoring, maintenance, and replacement of filters or treatment media are necessary to ensure the water quality remains suitable for lubrication. The cost of water treatment and filtration maintenance should be considered in the overall maintenance costs.
  • Water Quality Monitoring: Monitoring the quality of the water used in water-lubricated compressors is crucial. This may involve periodic water analysis, temperature monitoring, and water chemistry checks. The cost of water quality monitoring should be factored into the maintenance costs.

Component Lifespan and Replacement:

  • Extended Component Lifespan: Proper water-lubrication and cooling can contribute to the extended lifespan of compressor components. Reduced friction, effective cooling, and contaminant control can minimize wear and damage to components, leading to lower replacement costs over time. Water-lubricated compressors may have advantages in terms of component longevity, potentially reducing the frequency of component replacements.

Corrosion Prevention:

  • Corrosion Protection Measures: Water-lubricated compressors require corrosion prevention measures due to the presence of water within the system. Corrosion-resistant materials, coatings, or regular maintenance procedures are necessary to prevent corrosion-related issues. The cost of implementing and maintaining corrosion protection measures should be considered in the overall maintenance costs.

Overall, the maintenance costs of water-lubricated air compressors can vary depending on factors such as the specific design and components of the compressor, the quality of the water used, the effectiveness of water treatment and filtration systems, and the implementation of corrosion prevention measures. While water-lubricated compressors may have higher initial costs and additional maintenance requirements, they can potentially offer advantages in terms of extended component lifespan, reduced component replacements, and effective lubrication. It is important to consider these factors and consult the manufacturer’s guidelines to accurately assess the maintenance costs associated with water-lubricated air compressors.

air compressor

What is a water lubrication air compressor?

A water lubrication air compressor, also known as a water-injected air compressor, is a type of compressor that utilizes water as a lubricant and cooling medium in its operation. Unlike traditional air compressors that rely on oil for lubrication, water lubrication air compressors offer specific advantages and are commonly used in certain applications. Here’s an overview of how water lubrication air compressors work and their key characteristics:

Working Principle:

In a water lubrication air compressor, the compression process involves injecting a controlled amount of water into the compression chamber. The water acts as a lubricant and cooling agent, ensuring smooth operation and preventing excessive heat buildup. As the air is compressed, the water lubricates the internal components, reducing friction and wear.


1. Reduced Environmental Impact: One of the significant advantages of water lubrication air compressors is their reduced environmental impact. These compressors eliminate the need for oil lubrication, resulting in lower oil consumption and the elimination of oil-related contamination risks. This makes them a more environmentally friendly option, particularly in applications where oil contamination must be avoided, such as in food processing or pharmaceutical industries.

2. Enhanced Air Quality: Water lubrication air compressors produce cleaner compressed air compared to oil-lubricated compressors. The absence of oil in the compression process eliminates the risk of oil carryover into the air system. This is essential in applications where clean and oil-free compressed air is required, such as in electronics manufacturing or spray painting.

3. Improved Energy Efficiency: Water lubrication air compressors can offer improved energy efficiency compared to oil-lubricated compressors. The water injected during the compression process helps in cooling the air, reducing the energy required for subsequent cooling and drying processes. This can lead to energy savings and lower operating costs.

4. Lower Maintenance Requirements: Water lubrication air compressors generally have lower maintenance requirements compared to oil-lubricated compressors. The absence of oil means no oil changes or oil filter replacements, simplifying maintenance tasks and reducing costs. However, regular checks and maintenance of the water filtration system are necessary to ensure the water quality and prevent any potential contamination issues.


Water lubrication air compressors are commonly used in applications where clean and oil-free compressed air is critical. Some typical applications include:

  • Food and beverage processing
  • Pharmaceutical manufacturing
  • Electronics manufacturing
  • Spray painting and coating
  • Laboratories and research facilities
  • Dental offices

These compressors provide a reliable and environmentally friendly solution for industries and applications that require high-quality compressed air without oil contamination.

China OEM Silent A/C Water Cooled Oil Free Rotary Screw Air Compressor   with Good qualityChina OEM Silent A/C Water Cooled Oil Free Rotary Screw Air Compressor   with Good quality
editor by CX 2023-10-30