Product Description
Product name |
Oil Free Water Lubricated Screw Air Compressor |
Model |
WLS |
Cooling Method |
Air Cooling |
Pressure |
8/1013 bar |
Power |
5.5-250 kw |
Capacity |
0.3~33.97 m3/min |
Voltage |
380V/50HZ, 220V/60HZ, 400V/50HZ, 415V/50HZ or Customer′s Requirements |
Color |
Customized |
Advantage
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.
Model | Pressure (mpa) |
Displacement (m³/min) |
Power (kw) |
Noise (db) |
Water Inlet Diameter | Lubricating Water (L) |
Air Outlet |
WLS-0.8/5.5 | 0.8 | 0.3-0.78 | 5.5 | 57 | 3/4″ | 10 | 3/4″ |
WLS-1.0/5.5 | 1.0 | 0.2-0.65 | |||||
WLS-0.8/7.5 | 0.8 | 0.35-0.17 | 7.5 | 57 | 3/4″ | 10 | 3/4″ |
WLS-1.0/7.5 | 1.0 | 0.3-1.05 | |||||
WLS-1.25/7.5 | 1.25 | 0.24-0.81 | |||||
WLS-0.8/11 | 0.8 | 0.54-1.72 | 11 | 60 | 1″ | 26 | 3/4″ |
WLS-1.0/11 | 1 | 0.45-1.42 | |||||
WLS-1.25/11 | 1.3 | 0.35-1.10 | |||||
WLS-0.8/15 | 0.8 | 0.75-2.43 | 15 | 60 | 1″ | 26 | 1″ |
WLS-1.0/15 | 1.0 | 0.65-2.17 | |||||
WLS-1.25/15 | 1.25 | 0.6-1.80 | |||||
WLS-0.8/18.5 | 0.8 | 0.9-3.31 | 18.5 | 63 | 1″ | 30 | 1″ |
WLS-1.0/18.5 | 1 | 0.9-2.82 | |||||
WLS-1.25/18.5 | 1.3 | 0.6-2.05 | |||||
WLS-0.8/22 | 0.8 | 1.1-3.7 | 22 | 63 | 1″ | 30 | 1″ |
WLS-1.0/22 | 1.0 | 0.97-3.21 | |||||
WLS-1.25/22 | 1.25 | 0.85-2.87 | |||||
WLS-0.8/30 | 0.8 | 1.55-5.2 | 30 | 63 | 1 1/2″ | 40 | 1 1/2″ |
WLS-1.0/30 | 1 | 1.255-4.43 | |||||
WLS-1.25/30 | 1.3 | 1.1-3.63 | |||||
WLS-0.8/37 | 0.8 | 1.91-6.50 | 37 | 66 | 1 1/2″ | 40 | 1 1/2″ |
WLS-1.0/37 | 1.0 | 1.6-5.53 | |||||
WLS-1.25/37 | 1.25 | 1.42-4.47 | |||||
WLS-0.8/45 | 0.8 | 2.5-8.3 | 45 | 66 | 1 1/2″ | 90 | 2″ |
WLS-1.0/45 | 1 | 1.91-6.3 | |||||
WLS-1.25/45 | 1.3 | 1.7-5.56 | |||||
WLS-0.8/55 | 0.8 | 3.0-10.3 | 55 | 69 | 1 1/2″ | 100 | 2″ |
WLS-1.0/55 | 1.0 | 2.6-8.55 | |||||
WLS-1.25/55 | 1.25 | 2.3-7.67 | |||||
WLS-0.8/75 | 0.8 | 3.95-13 | 75 | 72 | 1 1/2″ | 100 | 2″ |
WLS-1.0/75 | 1 | 3.4-11.5 | |||||
WLS-1.25/75 | 1.3 | 3.0-9.7 | |||||
WLS-0.8/90 | 0.8 | 5.0-16.6 | 90 | 73 | 1 1/2″ | 120 | 2 1/2″ |
WLS-1.0/90 | 1.0 | 4.3-14.66 | |||||
WLS-1.25/90 | 1.25 | 3.72-12.6 | |||||
WLS-0.8/110 | 0.8 | 6.0-20.2 | 110 | 77 | 2″ | 120 | 2 1/2″ |
WLS-1.0/110 | 1 | 5.0-16.66 | |||||
WLS-1.25/110 | 1.3 | 4.65-15.56 | |||||
WLS-0.8/132 | 0.8 | 6.75-22.52 | 132 | 77 | 2″ | 120 | 2 1/2″ |
WLS-1.0/132 | 1.0 | 6.0-19.97 | |||||
WLS-1.25/132 | 1.25 | 5.07-16.90 | |||||
WLS-0.8/160 | 0.8 | 8.5-28.11 | 160 | 79 | 3″ | 160 | 3″ |
WLS-1.0/160 | 1 | 7.6-25.45 | |||||
WLS-1.25/160 | 1.3 | 6.7-22.52 | |||||
WLS-0.8/185 | 0.8 | 10-33.97 | 185 | 79 | 3″ | 160 | 3″ |
WLS-1.0/185 | 1.0 | 8.72-29 | |||||
WLS-1.25/185 | 1.25 | 7.75-25.21 | |||||
WLS-0.8/200 | 0.8 | 11.2-36.75 | 200 | 80 | 4″ | 200 | 4″ |
WLS-1.0/200 | 1 | 9.68-32.78 | |||||
WLS-1.25/200 | 1.3 | 9.2-29.24 | |||||
WLS-0.8/250 | 0.8 | 13.5-45 | 250 | 80 | 4″ | 200 | 4″ |
WLS-1.25/250 | 1.3 | 10.2-33.97 |
ZheJiang CHINAMFG Gas Compressor Manufacturing Co.,Ltd. founded in 2005, is a leading high technology of machine and equipment manufacturer integrating the design, R&D, production, sales and service for air compressors & Mining Equipment. Adopting advanced technology, design concept and quality control, and we are able to provide customized products to meet customers’ OEM needs.
Our company has more than 520 employees, including 86 senior technicians and professional engineers. Our technical team provides our customers with professional air system solutions. With the total 15000 square meters of the facility, 4 modern advanced production lines are built up to ensure production capacity to meet customer requirements.
Our company has been awarded the honorary title of “ZheJiang high-tech enterprise” and our products enjoy high honors in the industry. Our company has the ISO9001 certification and was awarded the qualification certificate of equipment through military contracts in 2018.
We offer the following products and services:
1. Screw air compressor
1.1 Oil-free screw air compressor
1.2 Oil-injected air compressor
2. Reciprocating piston air compressor
2.1 Piston air compressor
2.2 Oil-free piston air compressor
2.3 Piston medium & high-pressure air compressor
3.Portable air compressor & Mining Equipment
3.1 Diesel or Electric portable screw air compressor
3.2 Air Pick, Rock Drill, DTH Drilling Rig, Crawler Drilling Rig
4. Air compressor accessories
4.1 CHINAMFG or Adsorption compressed air drier
4.2 Compressed air filter or tank
4.3 Lubrication oil
We have a complete system of after-sales service and quality assurance. The company’s material purchase, inspection, manufacturing, installation, and testing are strictly in accordance with the ISO procedures. which will ensure each compressor has reliable quality and has a complete record to trace, if needed.
Q: Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery.
Q: How can we start order with your factory?
A: First, leave us an inquiry and advise which item you’re interested, and then we will contact you in 24 hours. You’re so kind if provide all detailed information, will better for us to know exactly what you need.
Q: What are your MOQ?
A: Different products have different MOQ, most is 1 set.
Q: What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We’ll show you the photos of the products and packages.
Q: How about your delivery time?
A: Generally, it will take 90 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.
Q: Do you a trade company or real factory?
A: We are 100% factory; we located in ZheJiang city, China.
Shipping Cost:
Estimated freight per unit. |
To be negotiated |
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After-sales Service: | Online Support |
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Warranty: | Unit 1 Year, Air End 2 Years |
Lubrication Style: | Oil-free |
Customization: |
Available
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Are There Oil-Free Screw Compressors Available?
Yes, oil-free screw compressors are available in the market to cater to applications where oil contamination is a concern. Here’s a detailed explanation:
Oil-free screw compressors, as the name suggests, are designed to operate without the use of lubricating oil in the compression chamber. These compressors offer several advantages in industries where oil-free compressed air or gas is required, such as in food and beverage, pharmaceutical, electronics, and certain manufacturing processes.
The key features and considerations of oil-free screw compressors include:
- 1. Specialized Design: Oil-free screw compressors are designed with specialized materials, coatings, and sealing systems to eliminate the need for lubricating oil in the compression process. The rotors and other internal components are constructed to ensure minimal friction and wear, even in the absence of oil.
- 2. Dry Compression: Unlike lubricated screw compressors, oil-free screw compressors rely on dry compression methods. The compression chamber is designed to achieve compression without the presence of oil, ensuring that the discharged air or gas is free from oil contaminants. This is particularly critical in industries where oil contamination can have detrimental effects on product quality or equipment performance.
- 3. Sealing Technology: Oil-free screw compressors employ advanced sealing technologies to prevent air or gas leakage between the high-pressure and low-pressure sides of the compressor. These sealing systems ensure efficient compression while maintaining the required clearances between the rotors and the compressor housing.
- 4. Cooling Systems: Oil-free screw compressors utilize alternative cooling methods, such as air or water cooling, to dissipate the heat generated during compression. Efficient cooling is crucial to prevent overheating and ensure reliable operation.
- 5. Filtration Systems: Oil-free compressors often incorporate high-quality filtration systems to remove particulates, moisture, and other contaminants from the incoming air or gas. These filtration systems help maintain the integrity of the compressor and ensure the delivery of clean, oil-free compressed air or gas.
- 6. Application-Specific Solutions: Oil-free screw compressors are available in various sizes and configurations to meet specific application requirements. They can be tailored to deliver the desired air or gas flow rates, pressures, and purity levels.
It’s important to note that oil-free screw compressors generally have higher initial costs compared to lubricated compressors due to their specialized design and materials. However, they offer benefits such as reduced maintenance, minimized risk of oil contamination, and compliance with stringent industry standards or regulations.
When considering an oil-free screw compressor, it’s crucial to assess the specific application needs, air quality requirements, and operating conditions. Consulting with manufacturers or suppliers can help in selecting the most suitable oil-free screw compressor for a particular industry or process.
In summary, oil-free screw compressors are available and offer a reliable and efficient solution for applications where oil-free compressed air or gas is essential. These compressors are designed with specialized features to ensure dry compression, reliable sealing, effective cooling, and high-quality filtration.
What Is the Role of Air Dryers in Screw Compressor Systems?
Air dryers play a crucial role in screw compressor systems by removing moisture from the compressed air. Here’s a detailed explanation:
Air contains moisture in the form of water vapor, which can be problematic when compressed. As air is compressed, its temperature rises, causing the moisture to condense into liquid water. This moisture can cause various issues within the compressed air system, including equipment corrosion, decreased efficiency, and compromised air quality.
The role of air dryers in screw compressor systems is to remove this moisture from the compressed air, ensuring dry and clean air for reliable and efficient operation. Here are the key functions and benefits of air dryers:
1. Moisture Removal:
Air dryers extract moisture from the compressed air, reducing its dew point temperature. By lowering the dew point, the risk of condensation and subsequent issues, such as corrosion and water damage to pneumatic equipment, is minimized. Dry air is essential for maintaining the integrity and longevity of the system components.
2. Protection of Pneumatic Equipment:
Moisture in the compressed air can negatively impact pneumatic equipment, including valves, actuators, and air tools. It can cause rust, corrosion, and malfunctioning of these components. By using air dryers to remove moisture, the risk of damage to the equipment is significantly reduced, extending their lifespan and ensuring reliable performance.
3. Prevention of Contamination:
Moisture in compressed air can also lead to the growth of microorganisms, such as bacteria and fungi, within the system. These contaminants can contaminate the air and pose a health risk or cause product spoilage in sensitive applications, such as food and pharmaceutical industries. Air dryers help prevent the growth of these contaminants, ensuring clean and safe compressed air.
4. Enhanced Efficiency:
Dry compressed air improves the efficiency of the overall system. Moisture in the air can cause pressure drop issues, affecting the performance of pneumatic tools and equipment. Dry air allows for optimal operation, reducing energy consumption and enhancing system efficiency.
5. Reduced Maintenance and Downtime:
Moisture-related issues can lead to increased maintenance requirements and system downtime. By removing moisture with air dryers, the need for frequent maintenance and repairs caused by water-related problems is minimized. This helps in reducing costly downtime and improving productivity.
There are different types of air dryers commonly used in screw compressor systems:
a) Refrigerated Air Dryers: These dryers cool the compressed air, causing moisture to condense and separate from the air stream. The condensed water is then drained from the system, leaving behind dry air.
b) Desiccant Air Dryers: These dryers utilize desiccant materials, such as silica gel or activated alumina, to adsorb moisture from the compressed air. The desiccant material undergoes a regeneration process to remove the accumulated moisture, ensuring continuous drying of the compressed air.
c) Membrane Air Dryers: These dryers use permeable membranes to selectively remove moisture from the compressed air. The membranes allow water vapor to pass through while retaining dry air, effectively drying the compressed air stream.
The selection of the appropriate air dryer depends on factors such as the desired level of moisture removal, the specific application requirements, and the operating conditions of the screw compressor system.
In summary, air dryers play a vital role in screw compressor systems by removing moisture from the compressed air. They protect equipment, prevent contamination, enhance efficiency, and reduce maintenance and downtime. By ensuring dry and clean compressed air, air dryers contribute to the longevity, reliability, and optimal performance of the entire compressed air system.
What Is a Screw Compressor?
A screw compressor is a type of positive displacement compressor that operates based on the principle of rotary motion. Here’s a detailed explanation:
Working Principle:
A screw compressor consists of two helical rotors, typically called male and female rotors, that rotate in opposite directions within a housing. The rotors have specially designed profiles that interlock with each other, creating a series of compression chambers as they rotate. As the rotors rotate, the volume of these chambers decreases, compressing the air or gas trapped inside.
Compression Process:
As the air or gas enters the screw compressor, it gets trapped between the rotors’ lobes or threads. As the rotors continue to rotate, the trapped air or gas is carried along the length of the rotors and gradually compressed. The compression occurs continuously and smoothly as the air or gas moves from the suction side to the discharge side of the compressor. The interlocking rotors ensure a continuous flow of compressed air or gas without pulsation.
Oil-Injected and Oil-Free Variants:
Screw compressors are available in both oil-injected and oil-free variants. In oil-injected screw compressors, a small amount of lubricating oil is injected into the compression chamber to provide lubrication, cooling, and sealing between the rotors. The oil also helps in reducing friction and minimizing wear. Oil-injected screw compressors are commonly used in various industrial applications where a small amount of oil in the compressed air is acceptable.
On the other hand, oil-free screw compressors are designed to operate without the need for oil lubrication. These compressors use specialized rotor coatings, such as PTFE (polytetrafluoroethylene) or other non-stick materials, to reduce friction and prevent the need for oil. Oil-free screw compressors are often favored in applications where oil-free and contaminant-free compressed air is essential, such as in food and beverage, pharmaceutical, and electronics industries.
Applications:
Screw compressors are widely used in various industries for a range of applications. They are commonly employed in manufacturing plants, refineries, power generation facilities, and other industrial settings to supply compressed air or gas for pneumatic tools, process equipment, air conditioning systems, and more. The ability of screw compressors to deliver a continuous flow of compressed air or gas makes them suitable for applications that require a steady and reliable source of compressed air.
Advantages:
Screw compressors offer several advantages compared to other types of compressors. They provide high efficiency and can deliver a large volume of compressed air or gas. The continuous compression process results in smooth operation with minimal pulsation. Additionally, screw compressors are known for their compact design, low vibration levels, and relatively quiet operation.
In summary, a screw compressor is a rotary positive displacement compressor that uses interlocking helical rotors to compress air or gas. It operates based on a continuous compression process and is available in both oil-injected and oil-free variants. Screw compressors find widespread use in various industries for applications that require a reliable source of compressed air or gas.
editor by CX 2023-10-05
China best Water Lubricated Oil Free Stationary Electric Direct Driven Rotary Screw Air Compressor with Best Sales
Product Description
Working principle and characteristics of single screw compressor:
- Simple construction Low vibration
The single screw air compressor uses a single screw and 2 star wheels, 1 placed on either side of the screw. Radial and axial loads cancel each other, resulting a theoretically zero load. This is the most advanced designing structure of the single screw air compressor.
- High efficiency
Firstly, single screw air compressor theoretically doesn’t have any clearance volume. Secondly, the water used as a lubricating medium also seals gap inside the compression chamber, and enables high efficient operation at low speeds. Thirdly, using water as a cooling method keep compressor ideal isothermal compression.
- Energy saving
When the actual air usage is lower than rated air delivery, compressor consumes extra power without any air output during unloading. However, with inverter, compressor changes the rotary speed of motor depending on detected air pressure, resulting energy saving.
- Less noise
First, the motor and screw are directly connected without any rotation gear to cause gear noise. Meanwhile, sound absorbing materials are also used in the equipment shell to reduce noise.
- Stable air delivery
Depending on the valve of pressure sensor, the digital controller change the motor rotation speed through inverter. That is how it controls the discharge air pressure to make stable air output.
- Monitorable
Intelligent monitoring is used to prevent accidents. Emergency alarm appears on computers and short messages will also be sent to managers. All these are substantial to the prevention of production accidents.
Dry Type Oil-free Air Compressor Technical Parameters
Model | Capacity(FAD)* | Maxinmum working | Installed motor power | Lubricated Water Capacity | Noise | Dimensions(mm) | Weight | Air outlet | Cooling Water Capacity | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
pressure | level** | pipe diameter | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
m3/min | cfm | bar(g) | psig | kw | hp | L/min | dB(A) | L*W*H(mm) | kg | Inch | T/h | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
DVAWH-55(W) | 1.8-6.0 | 64-212 | 20 | 290 | 37+15 | 50+20 | 86 | 70 | 29, China Our factory is located in No. 366, YangzhuangBang Street, Pingxing Rd., Xindai Town, HangZhou, ZHangZhoug Province, China Q3: Warranty terms of your machine? Q4: Will you provide some spare parts of the machines? Q5: How long will you take to arrange production? Q6: Can you accept OEM orders?
What Is the Noise Level of Screw Compressors?The noise level of screw compressors can vary depending on several factors, including the compressor’s size, design, operating conditions, and the presence of noise-reducing features. Here’s a detailed explanation: Screw compressors are known for their relatively low noise levels compared to other types of compressors, such as reciprocating compressors. However, the actual noise level can still vary depending on the specific compressor model and its operating parameters. The noise level of screw compressors is typically measured in decibels (dB) and can range from around 60 dB to 90 dB or higher. It’s important to note that the noise level is logarithmic, meaning that a small increase in decibel level represents a significant increase in perceived noise intensity. Several factors can influence the noise level of screw compressors:
It’s worth noting that noise levels are typically provided by manufacturers as specifications for each compressor model. These specifications can help users select compressors with noise levels that meet their specific requirements or comply with local noise regulations. In summary, the noise level of screw compressors can range from around 60 dB to 90 dB or higher, depending on factors such as compressor size, design, operating conditions, and the presence of noise-reducing features. Proper installation, maintenance, and the use of sound insulation or enclosures can help minimize noise levels and create a more comfortable and quieter operating environment. Are There Regulations Governing the Use of Screw Compressors in Certain Industries?Yes, there are regulations governing the use of screw compressors in certain industries. Here’s a detailed explanation: 1. Occupational Safety and Health Administration (OSHA): In the United States, OSHA sets standards and regulations to ensure the safety and health of workers. While OSHA does not have specific regulations solely focused on screw compressors, they have general requirements that apply to compressed air systems, including screw compressors. These requirements cover aspects such as electrical safety, guarding of moving parts, and proper maintenance practices to ensure worker safety. 2. Environmental Protection Agency (EPA): The EPA in the United States regulates air emissions to protect the environment and public health. While screw compressors themselves are not directly regulated, if the compressed air is used in processes that emit pollutants, such as in industrial manufacturing, the EPA may have regulations that apply to those specific industries or processes. 3. Industry-Specific Regulations: Certain industries have specific regulations that govern the use of screw compressors or compressed air systems. These regulations are often aimed at ensuring product quality, safety, and environmental compliance. Some examples include: a) Food and Beverage Industry: The food and beverage industry often has strict regulations to ensure product safety and prevent contamination. Compressed air used in processes such as packaging, conveying, or powering equipment may need to meet specific quality standards, such as those established by the Food and Drug Administration (FDA) or the Global Food Safety Initiative (GFSI). b) Pharmaceutical Industry: The pharmaceutical industry has stringent regulations to ensure product quality, safety, and compliance with Good Manufacturing Practices (GMP). Compressed air used in pharmaceutical manufacturing processes must meet specific standards, such as those outlined in the United States Pharmacopeia (USP) or the European Pharmacopoeia (Ph. Eur.). c) Electronics Industry: The electronics industry often requires clean and dry compressed air to prevent damage to sensitive electronic components. Standards such as ISO 8573, which specify air purity classes for different contaminants in compressed air systems, may be applicable. d) Automotive Industry: The automotive industry may have regulations and standards related to the use of compressed air in manufacturing processes, such as painting or pneumatic tools. These regulations often focus on worker safety, product quality, and environmental compliance. It’s important for organizations in these industries to be aware of and comply with the relevant regulations governing the use of screw compressors. Compliance helps ensure the safety of workers, product quality, environmental protection, and overall regulatory compliance. It’s worth noting that regulations may vary by country and region, so it’s essential to consult the specific regulations applicable to the industry and location where the screw compressors are being used. Are There Different Types of Screw Compressors?Yes, there are different types of screw compressors available, catering to various application requirements. Here’s an overview of the main types: 1. Oil-Injected Screw Compressors: Oil-injected screw compressors, also known as lubricated screw compressors, are the most common type. These compressors require the injection of a small amount of lubricating oil into the compression chamber. The oil serves multiple purposes, including lubrication, cooling, sealing, and reducing friction between the rotors. Oil-injected screw compressors are widely used in industrial applications where a small amount of oil in the compressed air is acceptable. 2. Oil-Free Screw Compressors: Oil-free screw compressors are designed to operate without the need for oil lubrication. These compressors incorporate specialized rotor coatings, such as PTFE (polytetrafluoroethylene) or other non-stick materials, to reduce friction and eliminate the need for oil. Oil-free screw compressors are preferred in applications that require oil-free and contaminant-free compressed air. Industries like food and beverage, pharmaceuticals, electronics, and others often rely on oil-free screw compressors to ensure the purity of the compressed air. 3. Variable Speed Drive (VSD) Screw Compressors: VSD screw compressors, also known as variable frequency drive (VFD) screw compressors, are equipped with a variable speed drive system. This system allows the compressor to adjust the rotational speed of the motor and, consequently, the speed of the screw rotors. By varying the speed, VSD screw compressors can closely match the compressed air or gas demand, resulting in energy savings and improved efficiency. VSD screw compressors are particularly beneficial in applications with varying air demand, as they can adapt their output accordingly. 4. Two-Stage Screw Compressors: Two-stage screw compressors consist of two sets of rotors arranged in series. The first stage compresses the air or gas to an intermediate pressure, and the second stage further compresses it to the desired final pressure. Two-stage screw compressors are commonly used in applications that require higher discharge pressures. By dividing the compression into two stages, these compressors can achieve higher efficiency and improved performance in high-pressure applications. 5. Water-Injected Screw Compressors: Water-injected screw compressors, also known as liquid-injected screw compressors, utilize water or a water-glycol mixture as a sealing and cooling medium. The water injection helps in sealing the compression chamber and reduces the discharge temperature, enhancing the compressor’s efficiency. Water-injected screw compressors are often used in applications where oil contamination is a concern, such as in the pharmaceutical and food processing industries. Each type of screw compressor has its own advantages and is suitable for specific applications. The choice of the screw compressor type depends on factors such as the desired level of air purity, the need for oil-free operation, energy efficiency requirements, and the operating conditions of the application.
China Hot selling Water Lubricated Oil Free Stationary Electric Direct Driven Rotary Screw Air Compressor with high qualityProduct Description
Working principle and characteristics of single screw compressor:
Dry Type Oil-free Air Compressor Technical Parameters
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