China factory VSD Industrial Air Oil Free CHINAMFG with Germany Technology Industrial Silent Oil-Free Rotary Screw Air Compressor air compressor for sale

Product Description

VSD Industrial Air Oil Free CHINAMFG with Germany Technology Industrial Silent Oil-Free Rotary Screw Air Compressor 

The ETC oil-free conversion technology opens up completely new possibilities for providing oil free compressed air in meeting with ISO 8573-1 Class 0 quality standard.

When it comes to holding down up-front operational costs, converter technology is ideally suited for the provision of entirely oil free compressed air. And it is dependable too: Penetration of oil into the compressed air network is absolutely impossible!

Operating costs are extremely low because no costly checkups are required. Commonly occurring risks such as oil penetration have been discarded, and frequent replacement of component elements as with filters has been completely eliminated.


Features of CHINAMFG ETC Series Oil Free Rotary Screw Air Compressor
1. Air quality to ISO8573-1 Class 0 standard with TUV certificate on request
2. Proven Eco-Tec Oil Free Converter technology from Germany and over thousands successful installation reference worldwide
3. Single stage airend design for easy and cost saving maintenance
4. T. E. F. C. IP55 class F electric motor in compliance with IEC/DIN standards
5. Modern concept suction valve with energy saving modulation control as option
6. Intelligent PLC control panel with sequential / remote control functions
7. Reliable automatic control box with “Siemens” contactors
8. High efficiency aftercooler (air- or water- cooled available)

Proper disposal is no problem either as a matter of fact, in terms of oil content the condensate is of drinking water quality! In the ETC converter the long hydrocarbon chains of the residual oil contained in the compressed air are broken up into harmless carbon dioxide and water, i.e. substances occurring naturally in the air. 

The catalytic converter incorporates a container with compact granulated pellets through which the compressed air circulates. This process breaks down and converts both oil droplets and oil vapors. The condensate that forms afterwards is therefore completely oil free and can be disposed of much less expensively and without the need for additional treatment. 

Oil/hydrogen concentration is below 0,0571 mg/m3. The addition of the catalytic converter guarantees class 1 compressed air (ISO 8573-1) for all applications where oil free compressed air is essential. 

ADEKOM (ASIA PACIFIC) LIMITED founded in the late 90’s is a specialized air/gas compressors and treatment system manufacturer with headquarter in Hong Kong. Its partners located in Vicenza, Italy and Germering, Germany are the world’s leading manufacturers with global recognition and experience in designing, manufacturing and marketing of rotary screw air/gas compressors for decades. QUALITY, RELIABILITY and ENERGY EFFICIENCY have been the main objectives of serving customers all over the world. CHINAMFG follows the company core of its European partners, is committed to the research & development, quality assurance and satisfaction of customers’ needs. Today, what CHINAMFG can do is not just to supply the best products to the market, but to provide THE TOTAL SOLUTION TO YOUR NEEDS!


Asia Pacific Market: Spencer Lau (Ms.)

European/ Middle Eastern/ African Market: Echo Lok (Ms.)

American Market: Alice Kwok (Ms.)
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After-sales Service: Yes
Warranty: 12 Months
Lubrication Style: Oil-free
Cooling System: Air Cooling
Power Source: AC Power
Cylinder Position: Angular


air compressor

What is the impact of humidity on compressed air quality?

Humidity can have a significant impact on the quality of compressed air. Compressed air systems often draw in ambient air, which contains moisture in the form of water vapor. When this air is compressed, the moisture becomes concentrated, leading to potential issues in the compressed air. Here’s an overview of the impact of humidity on compressed air quality:

1. Corrosion:

High humidity in compressed air can contribute to corrosion within the compressed air system. The moisture in the air can react with metal surfaces, leading to rust and corrosion in pipes, tanks, valves, and other components. Corrosion not only weakens the structural integrity of the system but also introduces contaminants into the compressed air, compromising its quality and potentially damaging downstream equipment.

2. Contaminant Carryover:

Humidity in compressed air can cause carryover of contaminants. Water droplets formed due to condensation can carry particulates, oil, and other impurities present in the air. These contaminants can then be transported along with the compressed air, leading to fouling of filters, clogging of pipelines, and potential damage to pneumatic tools, machinery, and processes.

3. Decreased Efficiency of Pneumatic Systems:

Excessive moisture in compressed air can reduce the efficiency of pneumatic systems. Water droplets can obstruct or block the flow of air, leading to decreased performance of pneumatic tools and equipment. Moisture can also cause problems in control valves, actuators, and other pneumatic devices, affecting their responsiveness and accuracy.

4. Product Contamination:

In industries where compressed air comes into direct contact with products or processes, high humidity can result in product contamination. Moisture in compressed air can mix with sensitive products, leading to quality issues, spoilage, or even health hazards in industries such as food and beverage, pharmaceuticals, and electronics manufacturing.

5. Increased Maintenance Requirements:

Humidity in compressed air can increase the maintenance requirements of a compressed air system. Moisture can accumulate in filters, separators, and other air treatment components, necessitating frequent replacement or cleaning. Excessive moisture can also lead to the growth of bacteria, fungus, and mold within the system, requiring additional cleaning and maintenance efforts.

6. Adverse Effects on Instrumentation:

Humidity can adversely affect instrumentation and control systems that rely on compressed air. Moisture can disrupt the accuracy and reliability of pressure sensors, flow meters, and other pneumatic instruments, leading to incorrect measurements and control signals.

To mitigate the impact of humidity on compressed air quality, various air treatment equipment is employed, including air dryers, moisture separators, and filters. These devices help remove moisture from the compressed air, ensuring that the air supplied is dry and of high quality for the intended applications.

air compressor

Are there differences between single-stage and two-stage air compressors?

Yes, there are differences between single-stage and two-stage air compressors. Here’s an in-depth explanation of their distinctions:

Compression Stages:

The primary difference between single-stage and two-stage air compressors lies in the number of compression stages they have. A single-stage compressor has only one compression stage, while a two-stage compressor has two sequential compression stages.

Compression Process:

In a single-stage compressor, the entire compression process occurs in a single cylinder. The air is drawn into the cylinder, compressed in a single stroke, and then discharged. On the other hand, a two-stage compressor utilizes two cylinders or chambers. In the first stage, air is compressed to an intermediate pressure in the first cylinder. Then, the partially compressed air is sent to the second cylinder where it undergoes further compression to reach the desired final pressure.

Pressure Output:

The number of compression stages directly affects the pressure output of the air compressor. Single-stage compressors typically provide lower maximum pressure levels compared to two-stage compressors. Single-stage compressors are suitable for applications that require moderate to low air pressure, while two-stage compressors are capable of delivering higher pressures, making them suitable for demanding applications that require greater air pressure.


Two-stage compressors generally offer higher efficiency compared to single-stage compressors. The two-stage compression process allows for better heat dissipation between stages, reducing the chances of overheating and improving overall efficiency. Additionally, the two-stage design allows the compressor to achieve higher compression ratios while minimizing the work done by each stage, resulting in improved energy efficiency.


Intercooling is a feature specific to two-stage compressors. Intercoolers are heat exchangers placed between the first and second compression stages. They cool down the partially compressed air before it enters the second stage, reducing the temperature and improving compression efficiency. The intercooling process helps to minimize heat buildup and reduces the potential for moisture condensation within the compressor system.


The choice between a single-stage and two-stage compressor depends on the intended application. Single-stage compressors are commonly used for light-duty applications such as powering pneumatic tools, small-scale workshops, and DIY projects. Two-stage compressors are more suitable for heavy-duty applications that require higher pressures, such as industrial manufacturing, automotive service, and large-scale construction.

It is important to consider the specific requirements of the application, including required pressure levels, duty cycle, and anticipated air demand, when selecting between a single-stage and two-stage air compressor.

In summary, the main differences between single-stage and two-stage air compressors lie in the number of compression stages, pressure output, efficiency, intercooling capability, and application suitability.

air compressor

Can you explain the basics of air compressor terminology?

Understanding the basic terminology related to air compressors can help in better comprehension of their operation and discussions related to them. Here are some essential terms related to air compressors:

1. CFM (Cubic Feet per Minute): CFM is a unit of measurement that denotes the volumetric flow rate of compressed air. It indicates the amount of air a compressor can deliver within a minute and is a crucial factor in determining the compressor’s capacity.

2. PSI (Pounds per Square Inch): PSI is a unit of measurement used to quantify pressure. It represents the force exerted by the compressed air on a specific area. PSI is a vital specification for understanding the pressure capabilities of an air compressor and determining its suitability for various applications.

3. Duty Cycle: Duty cycle refers to the percentage of time an air compressor can operate in a given time period. It indicates the compressor’s ability to handle continuous operation without overheating or experiencing performance issues. For instance, a compressor with a 50% duty cycle can run for half the time in a given hour or cycle.

4. Horsepower (HP): Horsepower is a unit used to measure the power output of a compressor motor. It indicates the motor’s capacity to drive the compressor pump and is often used as a reference for comparing different compressor models.

5. Receiver Tank: The receiver tank, also known as an air tank, is a storage vessel that holds the compressed air delivered by the compressor. It helps in stabilizing pressure fluctuations, allowing for a more consistent supply of compressed air during peak demand periods.

6. Single-Stage vs. Two-Stage: These terms refer to the number of compression stages in a reciprocating air compressor. In a single-stage compressor, air is compressed in a single stroke of the piston, while in a two-stage compressor, it undergoes initial compression in one stage and further compression in a second stage, resulting in higher pressures.

7. Oil-Free vs. Oil-Lubricated: These terms describe the lubrication method used in air compressors. Oil-free compressors have internal components that do not require oil lubrication, making them suitable for applications where oil contamination is a concern. Oil-lubricated compressors use oil for lubrication, enhancing durability and performance but requiring regular oil changes and maintenance.

8. Pressure Switch: A pressure switch is an electrical component that automatically starts and stops the compressor motor based on the pre-set pressure levels. It helps maintain the desired pressure range in the receiver tank and protects the compressor from over-pressurization.

9. Regulator: A regulator is a device used to control and adjust the output pressure of the compressed air. It allows users to set the desired pressure level for specific applications and ensures a consistent and safe supply of compressed air.

These are some of the fundamental terms associated with air compressors. Familiarizing yourself with these terms will aid in understanding and effectively communicating about air compressors and their functionality.

China factory VSD Industrial Air Oil Free CHINAMFG with Germany Technology Industrial Silent Oil-Free Rotary Screw Air Compressor   air compressor for saleChina factory VSD Industrial Air Oil Free CHINAMFG with Germany Technology Industrial Silent Oil-Free Rotary Screw Air Compressor   air compressor for sale
editor by CX 2024-03-11