China factory Best Selling Dry Nitrogen Air Compressor for Hydraulic Accumulators air compressor for car

Product Description

Oil-free Gas Compressor

Product Description

Completely oil-free reciprocating piston compressor series: flow rate from 0.01m ³/ Min, pressure ranging from 0.1MPa to 15Mpa, motor power ranging from 0.1KW to 132KW, compressed medium including air, oxygen, nitrogen, sulfur hexafluoride, oil gas, hydrogen, helium, argon, carbon dioxide, biogas, natural gas, etc. According to user requirements, there are regular, silent, explosion-proof, anti-corrosion, etc.


Simultaneously equipped with post-processing equipment including coolers, high-efficiency oil removers, refrigerated dryers, adsorption dryers, filters, etc., we provide economical and reasonable configurations according to your different requirements for compressed gas quality. Oil content<0.01PPM, dust particles<0.01HM, CHINAMFG a low pressure dew point of -40 ºC. The gas storage tank series includes air storage tanks, oxygen storage tanks, steam storage tanks, chemical storage tanks, sandblasting tanks, sub cylinders, etc., with a volume of 0.05m ³ To 1000m ³, The pressure ranges from 0.1Mpa to 10.0Mpa. The above products are widely used in industries such as food, beverage, grain machinery, water treatment, medical, pharmaceutical, petroleum, chemical, laser, communication, national defense, scientific research, metallurgy, mining, electronics, power, instruments, automotive protection, advanced spraying, etc.

Product Type

Oxygen compressor Nitrogen compressor
Used in hospital oxygen supply centers to increase the pressure of the room's oxygen supply pipeline, boost oxygen, and fill it into steel cylinders. It can also be used for industrial acetylene combustion cutting, cutting scrap steel in steel plants, supporting boiler oxygen combustion, and recirculating the vapor oxygen from low-temperature liquid oxygen tanks into the tanks for various working conditions Mainly used for pressurization and filling of nitrogen gas cylinders, as well as nitrogen pressure testing and leakage testing of pipelines. The maximum filling pressure can reach 40MPA, which can be divided into air-cooled and water-cooled cooling according to the cooling method, and 3 and 4 stages of compression according to the compression stage.


Hydrogen compressor Carbon dioxide compressor
Used for pressurizing hydrogen in steel plant heat treatment, in the polycrystalline silicon industry, to provide continuous
pressure raw material hydrogen for reactors. In the future, with the widespread construction of hydrogen refueling stations, hydrogen compressors will be more used in hydrogen fuel cells, filling hydrogen vehicles with very high pressure to obtain clean, green, and pollution-free energy.
Used for the recovery of carbon dioxide gas in dry ice plants, and for the recovery, storage, and reuse of CO2 in the supercritical extraction process of carbon dioxide; In the dry ice factory and carbon dioxide extraction process, the suction pressure of the compressor is 0-1BARG, the discharge pressure can reach 80BAR, and the flow rate is 5NM3-600NM3/hour


Product Parameters

Detailed Photos

1.The friction components are made using special self-lubricating materials, allowing them to operate without the need for any additional lubricating oil.

2.The expelled air is oil-free, eliminating concerns about secondary pollution of gas facilities and products by oil.

3.It provides both environmental and societal benefits.

4.Only 2 daily inspections are required, making usage and maintenance more convenient.

5.The oil-free design is employed, with no oil present in the crankcase and compression cylinder.

6.These components boast a long lifespan. All models utilize a 4-level motor drive, ensuring low-speed, smooth operation. The mid-cooler is divided for better temperature control, resulting in lower exhaust temperatures and reduced resistance losses in the valve group design.



Project Case

Product Applications

The above products are widely used in industries such as food, beverage, grain machinery, water treatment, medical, pharmaceutical, petroleum, chemical, laser, communication, national defense, scientific research, metallurgy, mining, electronics, power, instruments, automotive protection, advanced spraying, etc.

Company Profile

WOBO has a comprehensive marketing service system and strong continuous research and development capabilities. Its products cover more than 30 types of gas chemical compressors, including oil free lubrication air compressors, oxygen compressors, nitrogen compressors, hydrogen compressors, carbon dioxide compressors, helium compressors, argon compressors, sulfur hexafluoride compressors, etc. The maximum pressure can reach 35Mpa. The products are widely used in petrochemical, textile, food, medicine, electricity, machinery, metallurgy, etc, In various fields such as home appliances and environmental protection, our company's multiple wind brand oil-free compressors have been exported to more than 40 countries and regions in Europe, America, Japan, South Korea, Southeast Asia, the Middle East, and Africa, winning widespread praise from many customers. The WOBO brand has established a good quality reputation in the hearts of users.

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After-sales Service: Online Support, Video Technical Support
Warranty: 12 Months
Lubrication Style: Oil-free
US$ 6500/Unit
1 Unit(Min.Order)


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

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

What are the different types of air compressors?

There are several different types of air compressors, each with its own unique design and operating principle. Here's an overview of the most commonly used types:

1. Reciprocating Air Compressors: Reciprocating air compressors, also known as piston compressors, use one or more pistons driven by a crankshaft to compress air. They operate by drawing air into a cylinder, compressing it with the piston's up-and-down motion, and discharging the compressed air into a storage tank. Reciprocating compressors are known for their high pressure capabilities and are commonly used in industrial applications.

2. Rotary Screw Air Compressors: Rotary screw air compressors utilize two interlocking screws to compress air. As the male and female screws rotate, the air is trapped between them and gradually compressed as it moves along the screw threads. These compressors are known for their continuous duty cycle, high efficiency, and quiet operation. They are widely used in industrial, commercial, and automotive applications.

3. Centrifugal Air Compressors: Centrifugal air compressors rely on the principle of centrifugal force to compress air. They use a high-speed impeller to accelerate the incoming air and then convert the kinetic energy into pressure energy. Centrifugal compressors are commonly used in large-scale industrial applications that require high volumes of compressed air.

4. Rotary Vane Air Compressors: Rotary vane air compressors employ a rotor with sliding vanes that compress the air. As the rotor rotates, the vanes slide in and out of the rotor, creating compression chambers. Air is drawn in, trapped, and compressed as the vanes move. These compressors are compact, reliable, and suitable for small to medium-sized applications.

5. Axial Flow Air Compressors: Axial flow air compressors are primarily used in specialized applications such as aircraft engines and gas turbines. They utilize a series of rotating and stationary blades to compress air in a continuous flow. Axial flow compressors are known for their high flow rates and are designed for applications that require large volumes of compressed air.

6. Scroll Air Compressors: Scroll air compressors consist of two interlocking spirals or scrolls that compress the air. One spiral remains stationary while the other orbits around it, creating a series of expanding and contracting pockets that compress the air. Scroll compressors are compact, reliable, and commonly used in applications where low noise and oil-free air are required, such as medical and dental equipment.

These are just a few examples of the different types of air compressors available. Each type has its own advantages, capabilities, and ideal applications. The choice of air compressor depends on factors such as required pressure, flow rate, duty cycle, noise level, oil-free operation, and specific application requirements.

China factory Best Selling Dry Nitrogen Air Compressor for Hydraulic Accumulators   air compressor for carChina factory Best Selling Dry Nitrogen Air Compressor for Hydraulic Accumulators   air compressor for car
editor by CX 2024-02-08