Product Description

CHINAMFG Oil-free Air Compressor

BROTIE oil-free lubricated air compressors belong to reciprocating, piston, single action and air-cooled portable air compressors, they are designed for the departments which need pure air source and higher environmental requirements. There is no need to add lubricating oil for this product, the exhaust gas does not contain oil and oil vapor and won’t pollute environment, compressed air consuming equipment and its product, therefore, it is an environment-friendly energy-saving product.

1. When it is used as a general power gas source, it is more convenient in use than oil lubricated air compressor and its maintenance cost is lower.
2. As the simplest and optimum equipment which provides high-quality oilless compressed air, it saves complicated oil filtering and treatment equipment, thus saving a lot of equipment expenditure and maintenance cost.

Select a machine type with at least 20% allowance when determining compressed air consumption.
Please take into account the condition that consumption of compressed air may be increased in the future. Correct type selection will reduce purchase and use cost.
For detailed models, please contact with CHINAMFG with no hesitation.

Model Capacity
(m 3 /min)
Discharge pressure
Motor Power
Size of discharge Air Container Volume
ZW-0.1/7 0.1 0.7 980 ≤ 78 1.5(220V) G1/4″ 0.04 750*350*750
ZW-0.24/7 0.24 0.24 950 ≤ 81 2.2(380V) G1/2″ 0.08 1140*400*900
ZW-0.3/7 0.3 0.7 950 ≤ 81 2.2(380V) G1/2″ 0.08 1140*400*900
VW-0.45/7 0.45 0.7 920 ≤ 83 4(380V) G1/2″ 0.12 1300*460*960
VW-0.6/7 0.6 0.7 950 ≤ 84 5.5(380V) G1/2″ 0.12 1300*460*960
VW-0.42/10 0.42 1.0 920 ≤ 84 4(380V) G1/2″ 0.12 1300*460*960
VW-0.5/14 0.5 1.4 670 ≤ 84 5.5(380V) G1/2″ 0.18 1450*500*1100
WW-0.6/10 0.6 1.0 740 ≤ 84 5.5(380V) G1/2″ 0.18 1450*500*1100
WW-0.9/7 0.9 0.7 810 ≤ 84 7.5(380V) G1/2″ 0.18 1450*500*1100
WW-0.9/10 0.9 1.0 810 ≤ 84 7.5(380V) G1/2″ 0.18 1450*500*1100
WW-0.7/12.5 0.7 1.25 740 ≤ 84 7.5(380V) G1/2″ 0.18 1450*500*1100
WW-1.25/7 1.25 0.7 860 ≤ 85 11(380V) G3/4″ 0.28 1600*650*1200
WW-1.25/10 1.25 1.0 770 ≤ 85 11(380V) G3/4″ 0.28 1600*650*1200
WW-1.6/10 1.6 1.0 820 ≤ 85 15(380V) G3/4″ 0.32 1660*650*1220
WW-1.8/10 1.8 1.0 900 ≤ 86 15(380V) G3/4″ 0.32 1660*650*1220
WW-1.2/10 1.2 1.0 740 ≤ 84 5.5*2(380V) G1″ 0.30 1850*1250*1400
WW-1.8/7 1.8 0.7 810 ≤ 84 7.5*2(380V) G1″ 0.30 1850*1250*1400
WW-1.8/10 1.8 1.0 810 ≤ 84 7.5*2(380V) G1″ 0.30 1850*1250*1400
WW-1.4/12.5 1.4 1.25 740 ≤ 84 7.5*2(380V) G1″ 0.30 1850*1250*1400
WW-2.5/7 2.5 0.7 860 ≤ 86 11*2(380V) G1″ 0.30 1850*1250*1400
WW-2.5/10 2.5 1.0 770 ≤ 86 11*2(380V) G1″ 0.30 1850*1250*1400
WW-3.0/7 3.0 0.7 770 ≤ 86 11*2(380V) G1″ 0.32 1850*1250*1400
WW-3.0/10 3.0 1.0 810 ≤ 86 11*2(380V) G1″ 0.32 1850*1250*1400
WW-3.2/7 3.2 0.7 820 ≤ 86 15*2(380V) G1″ 0.32 1900*1500*1500
WW-3.2/10 3.2 1.0 820 ≤ 86 15*2(380V) G1″ 0.32 1900*1500*1500
WW-3.6/7 3.6 0.7 900 ≤ 86 15*2(380V) G1″ 0.32 1900*1500*1500
WW-3.6/10 3.6 1.0 900 ≤ 86 15*2(380V) G1″ 0.32 1900*1500*1500
WW-4.8/10 4.8 1.0 900 ≤ 86 15*2(380V) 11*1(380V) G3/2″ / 2210*1360*1050

Power Source: AC Power
Configuration: Portable
Mute: Mute
Application: Back Pressure Type
Material: Cast Iron
Drive Mode: Electric


air compressor

How Do Water-Lubricated Air Compressors Contribute to Energy Savings?

Water-lubricated air compressors can contribute to energy savings in several ways, making them an attractive option for industries looking to optimize their energy consumption. Here are the key ways in which water-lubricated compressors help achieve energy efficiency:

  1. Reduced friction and improved efficiency: Water serves as a lubricant in water-lubricated compressors, creating a thin film between moving parts to reduce friction. This reduces the energy losses due to mechanical friction and improves the overall efficiency of the compressor. Compared to oil-lubricated compressors, water-lubricated models can achieve higher mechanical efficiency, translating into energy savings over the compressor’s operational lifetime.
  2. Elimination of oil vapor carryover: Oil-lubricated compressors require oil filtration systems to prevent oil carryover into the compressed air stream. These filtration systems consume energy and can introduce pressure drops. In contrast, water-lubricated compressors eliminate the need for oil filtration, reducing energy consumption associated with filtration equipment and minimizing pressure losses. This leads to improved system efficiency and energy savings.
  3. Improved heat transfer and cooling: Water-lubricated compressors offer enhanced heat transfer capabilities compared to oil-lubricated counterparts. Water has a higher specific heat capacity and thermal conductivity, allowing for more efficient heat dissipation. This results in lower operating temperatures and reduces the energy required for cooling the compressor. By optimizing heat transfer, water-lubricated compressors can minimize energy consumption associated with cooling systems or air conditioning in compressor rooms.
  4. Optimized system design: Water-lubricated compressors often employ advanced system designs that further enhance energy efficiency. For example, they may incorporate variable speed drive (VSD) technology, which adjusts the compressor’s speed and power consumption based on the actual air demand. This eliminates energy waste associated with constant-speed operation and reduces energy consumption during periods of low compressed air demand. Additionally, water-lubricated compressors may feature optimized internal components and improved air flow dynamics, resulting in reduced energy losses and improved overall system efficiency.
  5. Heat recovery opportunities: Water-lubricated compressors can provide opportunities for heat recovery. The heat generated during compression can be captured and utilized for various heating applications within the facility, such as space heating, water heating, or process heating. By harnessing this waste heat, water-lubricated compressors contribute to energy savings by offsetting the need for additional energy sources for heating purposes.

By combining these energy-saving features, water-lubricated air compressors help optimize energy consumption, reduce operational costs, and minimize the environmental impact associated with compressed air systems. Implementing water-lubricated compressors with a comprehensive energy management strategy can result in significant energy savings and improved overall sustainability for industrial operations.

air compressor

Are There Any Potential Water-Related Issues with These Compressors?

Yes, there are potential water-related issues that can arise with water-lubricated compressors. Here’s a detailed explanation of some of the common water-related issues associated with these compressors:


  • Internal Corrosion: Water-lubricated compressors are susceptible to internal corrosion due to the presence of water within the system. If the water used is not properly treated or if corrosion prevention measures are insufficient, the internal components of the compressor can corrode over time. Corrosion can lead to reduced performance, component damage, and the potential for leaks or system failures.
  • External Corrosion: External components such as piping, valves, and fittings can also be affected by corrosion if exposed to water and moisture. Corrosion on these external surfaces can lead to compromised integrity, leaks, and reduced system efficiency.

Water Quality:

  • Water Contaminants: The quality of the water used in water-lubricated compressors is crucial. If the water contains contaminants such as sediment, debris, oil, or chemicals, it can negatively impact the performance and reliability of the compressor. Contaminants can cause blockages, clogging, increased wear on components, reduced lubrication effectiveness, and potential damage to the compressor.
  • Water Hardness: Water hardness, characterized by high mineral content, can lead to scaling and deposits within the compressor and associated components. Scaling can restrict flow, impede heat transfer, and reduce the efficiency of the compressor. It can also contribute to fouling and corrosion issues.

Water Treatment and Filtration:

  • Inadequate Water Treatment: Insufficient or improper water treatment can lead to various issues. If the water is not adequately treated for contaminants, hardness, or pH levels, it can result in accelerated corrosion, scaling, fouling, and reduced lubrication effectiveness. Inadequate water treatment can also contribute to increased maintenance requirements and decreased overall compressor performance.
  • Filtration System Issues: Filtration systems play a crucial role in removing contaminants from the water. However, if the filtration system is not properly maintained, filters become clogged or damaged, or if there are design or installation issues, it can lead to inadequate filtration and compromised water quality. This can result in the accumulation of contaminants, reduced lubrication performance, and potential damage to the compressor.

Water Supply and Availability:

  • Insufficient Water Supply: Water-lubricated compressors rely on a consistent and reliable water supply. If the water supply is insufficient in terms of flow rate, pressure, or quality, it can impact the compressor’s operation and performance. Inadequate water supply can lead to inadequate lubrication, reduced cooling capacity, and increased wear on components.
  • Water Source Availability: The availability of a suitable water source is essential for water-lubricated compressors. In certain locations or applications, accessing clean water or meeting specific water quality requirements may pose challenges. Lack of a suitable water source can limit the feasibility or effectiveness of using water-lubricated compressors.

It is important to address these potential water-related issues by implementing proper water treatment, corrosion prevention measures, regular maintenance of filtration systems, and monitoring of water quality. Adhering to manufacturer guidelines, performing regular inspections, and taking proactive measures can help mitigate these issues and ensure the reliable and efficient operation of water-lubricated compressors.

air compressor

How Do Water-Lubricated Air Compressors Compare to Oil-Lubricated Ones?

Water-lubricated air compressors and oil-lubricated air compressors have distinct differences in terms of lubrication method, performance, maintenance, and environmental impact. Here is a detailed comparison between the two:

Water-Lubricated Air Compressors Oil-Lubricated Air Compressors
Lubrication Method Water is used as the lubricant in water-lubricated compressors. It provides lubrication and heat dissipation. Oil is used as the lubricant in oil-lubricated compressors. It provides lubrication, sealing, and heat dissipation.
Performance Water lubrication offers efficient heat dissipation and cooling properties. It can effectively remove heat generated during compressor operation, preventing overheating and prolonging the compressor’s lifespan. Water lubrication can be suitable for applications where high heat generation is a concern. Oil lubrication provides excellent lubrication properties, ensuring smooth operation and reduced friction. It offers good sealing capabilities, preventing air leakage. Oil-lubricated compressors are often preferred for heavy-duty applications that require high pressure and continuous operation.
Maintenance Water lubrication generally requires less maintenance compared to oil lubrication. Water does not leave sticky residues or deposits, simplifying the cleaning process and reducing the frequency of lubricant changes. However, water lubrication may require additional measures to prevent corrosion and ensure proper water quality. Oil lubrication typically requires more maintenance. Regular oil changes, filter replacements, and monitoring of oil levels are necessary. Contaminants, such as dirt or moisture, can adversely affect oil lubrication and require more frequent maintenance tasks.
Environmental Impact Water lubrication is more environmentally friendly compared to oil lubrication. Water is non-toxic, biodegradable, and does not contribute to air or water pollution. It has a lower environmental impact and reduces the risk of contamination in case of leaks or spills. Oil lubrication can have environmental implications. Oil leaks or spills can contaminate the environment, including air, soil, and water sources. Used oil disposal requires proper handling to prevent pollution. Oil-lubricated compressors also release volatile organic compounds (VOCs) into the air, contributing to air pollution.

In summary, water-lubricated air compressors excel in efficient heat dissipation, require less maintenance, and have a lower environmental impact. On the other hand, oil-lubricated air compressors offer excellent lubrication properties and are suitable for heavy-duty applications. The choice between water and oil lubrication depends on specific requirements, operating conditions, and environmental considerations.

China wholesaler CHINAMFG 100% Oil-Free Air Compressor   lowes air compressorChina wholesaler CHINAMFG 100% Oil-Free Air Compressor   lowes air compressor
editor by CX 2023-10-17

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