Tag Archives: 2 stage compressor

China factory 55kw-90kw 2 Stage Compression General Screw Air Compressor Made in Germany mini air compressor

Product Description

55kw-90kw 2 Stage Compression General Screw Air Compressor Made In Germany 

1> Efficient,Durable 3-proof motor.
2> The screw air end of excellent performance.
3> The world top-level 3 filters.
4> The safty and reliability of electrocal control system.
5> The accurate temperature control valve.
6> The whole machine sound insulation design,low noise.
The Specifications for Industrial Rotary Screw Air Compressor 

Model No HGM55-II
Capacity(m3/min) 12
Work pressure(Bar) 8
Power(Kw) 55
Compression Grade 2 Stage 
Energy Efficiency Grade First level
Start Method  soft-starting method
Speed(Rpm) 1500
Connector G2″
Air Methods Air Cooling

Driving Method Direct Driven
Weight(kg) 2180
Dimension(MM) 2100*1250*1730

More Industrial Rotary Screw Air Compressor :

Model No  Capacity(m3/min) Work pressure(Bar) Power(Kw) Speed(Rpm) Air Methods Driving Method Weight(kg) Dimension(MM)
LG7BZ 1.15 8 7.5   Air Cooling Belt Driven 200 560*630*1075
LG11BZ 1.65 8 11 2940 Air Cooling Belt Driven 300 650*720*1180
LG15BZ 2.3 8 15 2940 Air Cooling Belt Driven 350 650*720*1180
LG22EZ 3.6 8 22 2940 Air Cooling Direct Driven 550 1150*770*1135
LG37EZ 6.5 8 37 2950 Air Cooling Direct Driven 750 1300*880*1250
LG55EZ 10.2 8 55 2970 Air Cooling Direct Driven 1300 970*1600*1450
LG75EZ 12.4 8 75 2970 Air Cooling Direct Driven 1600 1750*1030*1450



Lubrication Style: Lubricated
Cooling System: Air Cooling
Structure Type: Closed Type

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air compressor

Can air compressors be used for shipbuilding and maritime applications?

Air compressors are widely used in shipbuilding and maritime applications for a variety of tasks and operations. The maritime industry relies on compressed air for numerous essential functions. Here’s an overview of how air compressors are employed in shipbuilding and maritime applications:

1. Pneumatic Tools and Equipment:

Air compressors are extensively used to power pneumatic tools and equipment in shipbuilding and maritime operations. Pneumatic tools such as impact wrenches, drills, grinders, sanders, and chipping hammers require compressed air to function. The versatility and power provided by compressed air make it an ideal energy source for heavy-duty tasks, maintenance, and construction activities in shipyards and onboard vessels.

2. Painting and Surface Preparation:

Air compressors play a crucial role in painting and surface preparation during shipbuilding and maintenance. Compressed air is used to power air spray guns, sandblasting equipment, and other surface preparation tools. Compressed air provides the force necessary for efficient and uniform application of paints, coatings, and protective finishes, ensuring the durability and aesthetics of ship surfaces.

3. Pneumatic Actuation and Controls:

Air compressors are employed in pneumatic actuation and control systems onboard ships. Compressed air is used to operate pneumatic valves, actuators, and control devices that regulate the flow of fluids, control propulsion systems, and manage various shipboard processes. Pneumatic control systems offer reliability and safety advantages in maritime applications.

4. Air Start Systems:

In large marine engines, air compressors are used in air start systems. Compressed air is utilized to initiate the combustion process in the engine cylinders. The compressed air is injected into the cylinders to turn the engine’s crankshaft, enabling the ignition of fuel and starting the engine. Air start systems are commonly found in ship propulsion systems and power generation plants onboard vessels.

5. Pneumatic Conveying and Material Handling:

In shipbuilding and maritime operations, compressed air is used for pneumatic conveying and material handling. Compressed air is utilized to transport bulk materials, such as cement, sand, and grain, through pipelines or hoses. Pneumatic conveying systems enable efficient and controlled transfer of materials, facilitating construction, cargo loading, and unloading processes.

6. Air Conditioning and Ventilation:

Air compressors are involved in air conditioning and ventilation systems onboard ships. Compressed air powers air conditioning units, ventilation fans, and blowers, ensuring proper air circulation, cooling, and temperature control in various ship compartments, cabins, and machinery spaces. Compressed air-driven systems contribute to the comfort, safety, and operational efficiency of maritime environments.

These are just a few examples of how air compressors are utilized in shipbuilding and maritime applications. Compressed air’s versatility, reliability, and convenience make it an indispensable energy source for various tasks and systems in the maritime industry.

air compressor

How are air compressors used in refrigeration and HVAC systems?

Air compressors play a vital role in refrigeration and HVAC (Heating, Ventilation, and Air Conditioning) systems, providing the necessary compression of refrigerant gases and facilitating the heat transfer process. Here are the key ways in which air compressors are used in refrigeration and HVAC systems:

1. Refrigerant Compression:

In refrigeration systems, air compressors are used to compress the refrigerant gas, raising its pressure and temperature. This compressed gas then moves through the system, where it undergoes phase changes and heat exchange to enable cooling or heating. The compressor is the heart of the refrigeration cycle, as it pressurizes and circulates the refrigerant.

2. Refrigeration Cycle:

The compression of refrigerant gas by the air compressor is an essential step in the refrigeration cycle. After compression, the high-pressure, high-temperature gas flows to the condenser, where it releases heat and condenses into a liquid. The liquid refrigerant then passes through an expansion valve or device, which reduces its pressure and temperature. This low-pressure, low-temperature refrigerant then enters the evaporator, absorbing heat from the surrounding environment and evaporating back into a gas. The cycle continues as the gas returns to the compressor for re-compression.

3. HVAC Cooling and Heating:

In HVAC systems, air compressors are used to facilitate cooling and heating processes. The compressor compresses the refrigerant gas, which allows it to absorb heat from the indoor environment in the cooling mode. The compressed gas releases heat in the outdoor condenser unit and then circulates back to the compressor to repeat the cycle. In the heating mode, the compressor reverses the refrigeration cycle, absorbing heat from the outdoor air or ground source and transferring it indoors.

4. Air Conditioning:

Air compressors are an integral part of air conditioning systems, which are a subset of HVAC systems. Compressed refrigerant gases are used to cool and dehumidify the air in residential, commercial, and industrial buildings. The compressor pressurizes the refrigerant, initiating the cooling cycle that removes heat from the indoor air and releases it outside.

5. Compressor Types:

Refrigeration and HVAC systems utilize different types of air compressors. Reciprocating compressors, rotary screw compressors, and scroll compressors are commonly used in these applications. The selection of the compressor type depends on factors such as system size, capacity requirements, efficiency, and application-specific considerations.

6. Energy Efficiency:

Efficient operation of air compressors is crucial for refrigeration and HVAC systems. Energy-efficient compressors help minimize power consumption and reduce operating costs. Additionally, proper compressor sizing and system design contribute to the overall energy efficiency of refrigeration and HVAC systems.

By effectively compressing refrigerant gases and facilitating the heat transfer process, air compressors enable the cooling and heating functions in refrigeration and HVAC systems, ensuring comfortable indoor environments and efficient temperature control.

air compressor

Are there air compressors specifically designed for high-pressure applications?

Yes, there are air compressors specifically designed for high-pressure applications. These compressors are engineered to generate and deliver compressed air at significantly higher pressures than standard air compressors. Here are some key points about high-pressure air compressors:

1. Pressure Range: High-pressure air compressors are capable of producing compressed air at pressures typically ranging from 1000 to 5000 psi (pounds per square inch) or even higher. This is considerably higher than the typical range of 100 to 175 psi for standard air compressors.

2. Construction: High-pressure aircompressors feature robust construction and specialized components to withstand the higher pressures involved. They are designed with reinforced cylinders, pistons, valves, and seals that can handle the increased stress and prevent leaks or failures under high-pressure conditions.

3. Power: Generating high-pressure compressed air requires more power than standard compressors. High-pressure air compressors often have larger motors or engines to provide the necessary power to achieve the desired pressure levels.

4. Applications: High-pressure air compressors are utilized in various industries and applications where compressed air at elevated pressures is required. Some common applications include:

  • Industrial manufacturing processes that involve high-pressure air for operations such as air tools, pneumatic machinery, and equipment.
  • Gas and oil exploration and production, where high-pressure air is used for well drilling, well stimulation, and enhanced oil recovery techniques.
  • Scuba diving and underwater operations, where high-pressure air is used for breathing apparatus and underwater tools.
  • Aerospace and aviation industries, where high-pressure air is used for aircraft systems, testing, and pressurization.
  • Fire services and firefighting, where high-pressure air compressors are used to fill breathing air tanks for firefighters.

5. Safety Considerations: Working with high-pressure air requires adherence to strict safety protocols. Proper training, equipment, and maintenance are crucial to ensure the safe operation of high-pressure air compressors. It is important to follow manufacturer guidelines and industry standards for high-pressure applications.

When selecting a high-pressure air compressor, consider factors such as the desired pressure range, required flow rate, power source availability, and the specific application requirements. Consult with experts or manufacturers specializing in high-pressure compressed air systems to identify the most suitable compressor for your needs.

High-pressure air compressors offer the capability to meet the demands of specialized applications that require compressed air at elevated pressures. Their robust design and ability to deliver high-pressure air make them essential tools in various industries and sectors.

China factory 55kw-90kw 2 Stage Compression General Screw Air Compressor Made in Germany   mini air compressorChina factory 55kw-90kw 2 Stage Compression General Screw Air Compressor Made in Germany   mini air compressor
editor by CX 2023-10-10

China Good quality Oil Free Screw Air Compressor CZPT RF55 VSD 2 Stage Standing air compressor repair near me

Product Description

Product Description


The compressor element’s efficiency and tightness are ensured by its unique profile design.

The aviation impeller coating assures long-term performance.

Oil tank and speed-increasing gearbox are integrated.

Great efficiency, energy savings, and high reliability are all features of the built-in oil pump.



The compressor air end has a unique profile design that ensures its efficiency and tightness.

The aviation impeller coating assures long-term performance.

The material for the rotor is forged steel, which has high strength and hardness.

Cooling jackets are used on all series of air ends.

Reusable seal made of high-quality metal.


Cooling sleeves guarantee that rotor clearance is kept to a bare small at all times.

Boost efficiency and dependability.

A high-efficiency shaft seal decreases wear and eliminate the possibility of oil leakage.


High heat exchange efficiency, thanks to an integrated water flow design.

Switching is simple with the heat recovery module.

Flow channel built-in, easy to use, and dependable.


A high-quality intake filter ensures a high level of filtering.

High energy efficiency and process reliability.

Long service life and intervals between maintenance.



The sophisticated control system allows for simultaneous compressor and after-treatment control.

No maintenance is necessary because the hardware and software are designed to be reliable. Multiple local and remote communication options are supported. A thorough examination of the unit’s operational status and historical data.


Product Parameters

Model Maximum Working Pressure Capacity(FAD)* Installed Motor Power Cooling Method Noise Level Air Outlet Pipe
Dimension Weight
bar(g) psig m3/min cfm kw hp dB(A) L W H kg
RF37-7VSD A(W) 7 102 3.0-6.5 105.9-229.5 37 50 Air Cooling 70 DN50 2160 1450 2200 1850
Water Cooling 63 DN80 2180 1450 2200 1950
RF37-8VSD A(W) 8 116 2.8–6.4 98.8-226 Air Cooling 70 DN50 2160 1450 2200 1850
Water Cooling 63 DN80 2180 1450 2200 1950
RF37-10VSD A(W) 10 145 2.6-6.3 91.8-222.4 Air Cooling 70 DN50 2160 1450 2200 1850
Water Cooling 63 DN80 2180 1450 2200 1950
RF45-7VSD A(W) 7 102 4.5-7.7 158.9-271.8 45 60 Air Cooling 70 DN50 2160 1450 2200 2000
Water Cooling 63 DN80 2180 1450 2200 2100
RF45-8VSD A(W) 8 116 4.0-6.5 141.2-229.5 Air Cooling 70 DN50 2160 1450 2200 2000
Water Cooling 63 DN80 2180 1450 2200 2100
RF45-10VSD A(W) 10 145 3.5-6.8 123.6-240.1 Air Cooling 70 DN50 2160 1450 2200 2000
Water Cooling 63 DN80 2180 1450 2200 2100
RF55-7VSD A(W) 7 102 5.0-9.6 176.5-339 55 75 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2100
RF55-8VSD A(W) 8 116 4.5-8.8 158.9-310.7 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2100
RF55-10VSD A(W) 10 145 3.5-7.7 123.6-271.9 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2100
RF75-7VSD A(W) 7 102 5.5-13.5 194.2-476.7 75 100 Air Cooling 70 DN50 2160 1450 2200 2000
Water Cooling 63 DN80 2180 1450 2200 2100
RF75-8VSD A(W) 8 116 4.5-13.3 158.9-469.6 Air Cooling 70 DN50 2160 1450 2200 2000
Water Cooling 63 DN80 2180 1450 2200 2100
RF75-10VSD A(W) 10 145 4.4-12.1 155.3-427.3 Air Cooling 70 DN50 2160 1450 2200 2000
Water Cooling 63 DN80 2180 1450 2200 2100
RF90-7VSD A(W) 7 102 5.2-16.2 183.6-572 90 120 Air Cooling 70 DN50 2160 1450 2200 2000
Water Cooling 63 DN80 2180 1450 2200 2200
RF90-8VSD A(W) 8 116 4.5-15.6 158.9-550.9 Air Cooling 70 DN50 2160 1450 2200 2000
Water Cooling 63 DN80 2180 1450 2200 2200
RF90-10VSD A(W) 10 145 4.4-14.2 155.3-501.4 Air Cooling 70 DN50 2160 1450 2200 2000
Water Cooling 63 DN80 2180 1450 2200 2200
RF110-7VSD A(W) 7 102 10.2-19.5 360.2-688.6 110 150 Air Cooling 69 DN80 4050 1650 2000 3700
Water Cooling 67 DN80 2550 1650 2000 2700
RF110-8VSD A(W) 8 116 9.3-19.2 328.4-678 Air Cooling 69 DN80 4050 1650 2000 3700
Water Cooling 67 DN80 2550 1650 2000 2700
RF110-10VSD A(W) 10 145 8.5-17.5 300.1-618 Air Cooling 69 DN80 4050 1650 2000 3700
Water Cooling 67 DN80 2550 1650 2000 2700
RF132-7VSD A(W) 7 102 10.8-23.5 381.3-829.8 132 175 Air Cooling 70 DN80 4050 1650 2000 3700
Water Cooling 67 DN80 2550 1650 2000 2800
RF132-8VSD A(W) 8 116 10.4-22.8 367.2-805.1 Air Cooling 70 DN80 4050 1650 2000 3700
Water Cooling 67 DN80 2550 1650 2000 2800
RF132-10VSD A(W) 10 145 9.9-20.5 349.6-723.9 Air Cooling 70 DN80 4050 1650 2000 3700
Water Cooling 67 DN80 2550 1650 2000 2800
RF145-7VSD A(W) 7 102 11.2-23.9 395.5-844 145 195 Air Cooling 70 DN80 4050 1650 2000 3900
Water Cooling 68 DN80 2550 1650 2000 3000
RF145-8VSD A(W) 8 116 10.2-22.1 360.2-780.4 Air Cooling 70 DN80 4050 1650 2000 3900
Water Cooling 68 DN80 2550 1650 2000 3000
RF145-10VSD A(W) 10 145 9.8-20.5 346.0-723.9 Air Cooling 70 DN80 4050 1650 2000 3900
Water Cooling 68 DN80 2550 1650 2000 3000
RF160-7VSD A(W) 7 102 12.1-28.5 427.3-1006.4 160 215 Air Cooling 74 DN80 5040 1650 2100 5400
Water Cooling 72 DN80 3100 1650 2000 4000
RF160-8VSD A(W) 8 116 11.6-26.4 409.6-932.3 Air Cooling 74 DN80 5040 1650 2100 5400
Water Cooling 72 DN80 3100 1650 2000 4000
RF160-10VSD A(W) 10 145 9.9-24.5 349.6-865.2 Air Cooling 74 DN80 5040 1650 2100 5400
Water Cooling 72 DN80 3100 1650 2000 4000
RF200-7VSD A(W) 7 102 16.5-36.1 582.6-1274.8 200 270 Air Cooling 76 DN80 5040 1650 2100 5600
Water Cooling 65 DN80 3100 1650 2000 4200
RF200-8VSD A(W) 8 116 15.4-33.9 543.8-1197.1 Air Cooling 76 DN80 5040 1650 2100 5600
Water Cooling 65 DN80 3100 1650 2000 4200
RF200-10VSD A(W) 10 145 15.0-30.8 529.7-1087.6 Air Cooling 76 DN80 5040 1650 2100 5600
Water Cooling 67 DN80 3100 1650 2000 4200
RF250-7VSD A(W) 7 102 21.1-45.2 745.1-1596.2 250 350 Air Cooling 76 DN80 5040 1650 2100 5800
Water Cooling 74 DN80 3100 1650 2000 4300
RF250-8VSD A(W) 8 116 19.2-43.4 678.0-1532.6 Air Cooling 76 DN80 5040 1650 2100 5800
Water Cooling 74 DN80 3100 1650 2000 4300
RF250-10VSD A(W) 10 145 18.5-38.8 653.3-1370.2 Air Cooling 76 DN80 5040 1650 2100 5800
Water Cooling 74 DN80 3100 1650 2000 4300
RF275-7VSD A(W) 7 102 22.2-46.8 783.9-1652.7 275 370 Air Cooling 76 DN80 5040 1650 2100 5900
Water Cooling 74 DN80 3100 1650 2000 4400
RF275-8VSD A(W) 8 116 21.3-43.5 752.2-1536.1 Air Cooling 76 DN80 5040 1650 2100 5900
Water Cooling 74 DN80 3100 1650 2000 4400
RF275-10VSD A(W) 10 145 20.1-41.5 709.8-1465.5 Air Cooling 76 DN80 5040 1650 2100 5900
Water Cooling 74 DN80 3100 1650 2000 4400
RF315-7VSD A(W) 7 102 25.0-53.0 882.8-1871.6 315 420 Air Cooling 76 DN80 5040 1650 2100 5800
Water Cooling 65 DN80 3100 1650 2000 4400
RF315-8VSD A(W) 8 116 24.0-51.5 847.5-1818.7 Air Cooling 76 DN80 5040 1650 2100 5800
Water Cooling 65 DN80 3100 1650 2000 4400
RF315-10VSD A(W) 10 145 23.0-49.5 812.2-1748 Air Cooling 76 DN80 5040 1650 2100 5800
Water Cooling 65 DN80 3100 1650 2000 4400

Detailed Photos


After-sales Service: on Line Support
Warranty: 1 Year
Lubrication Style: Oil-free
Cooling System: Water Cooling
Power Source: AC Power
Cylinder Position: Horizontal



Choosing an Air Compressor

Considering a new Air Compressor? Here are some tips to make the decision easier. Learn the pros and cons of each type, including the differences between oil-injected and oil-free models, single stage and positive displacement. In addition, learn more about the different technologies that are available for your air compressor. It is important to choose an appropriate unit for the type of work you do. Here are some of the best compressors available today.

Positive displacement

There are several different types of air compressors, but most are positive displacement air compressors. They use a rotary or reciprocating component to compress air. The reciprocating component compresses air by reducing the volume of the chamber. Positive displacement compressors are used in bicycle pumps, chemical plants, and refrigerators. Positive displacement air compressors use multiple inlet ports. Despite the various types, the principle of operation remains the same.
Another type of positive displacement air compressor is a reciprocating piston. The piston inside a cylinder moves up and down, causing the compressed air to fill the upper part of the cylinder. These air compressors are used in a variety of different applications, including blowing bottles and gas pipelines. These air compressors can be water-cooled, lubricated, or non-lubricated. Different types have different capacities and air pressures.
A positive displacement flowmeter uses a rotating chamber that divides continuous fluid into discrete portions. The number of times the chamber is filled and discharged can be used to estimate the flow rate. The rotation speed of the measuring chamber is directly proportional to the flow rate. The drawbacks of this type of positive displacement flowmeter are that it is prone to jamming. If the fluid contains particles, it may be too thick for the meter to determine flow rate.
A negative displacement air compressor was invented in 1860 and is the oldest type of compressor. It uses two lobes positioned in a circular cavity. One rotor is connected to an engine, while the other pushes the other one to spin in the opposite direction. Negative displacement compressors are low-maintenance, but they do require more precision. They are often used in nuclear power plants because they use the kinetic energy of the rotating elements to produce pressure.


Oil-flooded or oil-injected air compressors use liquid to seal and lubricate moving parts and reduce noise. Oil-flooded air compressors are effective for a variety of pneumatic tools and accessories. Some models have a thermostat that controls the amount of oil used during operation. Other types of oil-flooded air compressors are piston-type models. Here is an overview of the basic differences between these two air compressors.
An oil-injected air compressor is more expensive than a comparable oil-free air compressor, but its advantages far outweigh its disadvantages. An oil-free compressor is quieter, requires less maintenance, and has a lower price tag. It also offers a greater degree of air purity. A number of other advantages may also make this type of air compressor the better choice for many industrial settings. If you need a high-pressure compressor in a tight space, consider the benefits of an oil-free system.
Oil-injected air compressors require more maintenance than oil-free models. Both types of air compressors offer similar capacity and ISO 8573-1 Class 0 and 1-2 purity, but the oil-injected systems require more air-treatment components. They require an activated carbon filter and coalescing filter. Oil-injected air compressors will likely remain the standard for industrial air compressors for many years. And since their performance and efficiency are comparable, it may be worthwhile to invest in some point-of-use air treatment.
Both types of air compressors have their benefits. However, choosing between oil-free and oil-injected air compressors is not as straightforward as you might think. Whichever type you choose, make sure it will meet your needs. The benefits of an oil-injected air compressor outweigh their disadvantages. In general, oil-injected air compressors are more durable and can last longer than oil-free models. The only downside is their higher price.


When choosing an air compressor for your company, you’ll need to determine what it is going to be used for. For example, if you’re planning on using it to power multiple workers, you should consider getting an oil-free compressor. An oil-free compressor, on the other hand, is quieter and can power several workers at a time. If you’re a contractor, the most important consideration will be the type of jobs you’ll be doing. Higher air pressure means greater demand for air flow, and more pressure can damage the equipment.
Oil-free compressed air is certified 100% free of contaminants. Technically, oil-free air is not completely free of foreign matter, but it is extremely low within the limits of practical air quality. A technically oil-free air compressor might have a total oil level of 0.003 mg/m3. If you’re in need of a technically oil-free air compressor, you must install an air treatment equipment after your current compressor.
If you’re in the manufacturing industry, a good oil-free air compressor will save you money and reduce your environmental impact. Many of these tools require air compressors to work, and this equipment will ensure that they don’t get contaminated. To buy the best oil-free compressor, you should learn a bit about the different terms used by compressor repair companies. ACFM, for example, is the amount of air that can be compressed in one minute at rated conditions.
When you’re using an oil-free air compressor, you should know that the overall life of the device will be much shorter. Compared to an oil-flooded rotary screw air compressor, an oil-free compressor typically has a lifespan of 50 thousand hours. But it’s important to understand that this type of compressor can still cause damage to piping and processes. Therefore, you should choose an oil-free compressor when you need to clean air for your business.


A single-stage air compressor, also known as a piston air compressor, compresses air only once before storing it in a cylinder. This stored air has enough energy to power a variety of pneumatic tools, such as screwdrivers, chisels, and wrenches. These units are also ideally suited for low-flow applications and are widely used in gas stations, auto shops, and various manufacturing plants.
A single-stage air compressor uses two valves – one for inlet and one for outlet – to transfer compressed air. Both valves are actuated by springs. The inlet valve has a slight curvature to provide protection from damage. The compressor’s outlet valve opens when the pressure in the cylinder is higher than the pressure in the storage tank. The piston moves very quickly inside the cylinder, exerting a high amount of force throughout the compression process. This high piston speed is a common cause of compressor wear and tear.
A single-stage air compressor is ideal for smaller tradesmen and small construction crews. Its lightweight and compact design make it easier to transport and store. While it may be tempting to buy the first cheap air compressor you see, it’s important to balance the price against performance to choose the right air compressor for your needs. The best single-stage air compressor is one that provides excellent performance and durability. Its two-stage counterpart is designed for larger construction teams and large applications.
The main difference between a single-stage and a two-stage air compressor lies in their capacity. A single-stage air compressor compresses air only once and delivers it into the storage tank, while a two-stage compressor compresses it twice, creating double the pressure. Because of this, single-stage air compressors are cheaper and versatile than their counterparts, which means that they can be used for multiple purposes.


A low-noise air compressor is a type of industrial compressor that is less noisy than regular air compressors. These are generally smaller machines designed for smaller factories and workshops with a few to several employees. They are designed to handle mid-weight volumes of compressed air per day. This type of compressor is especially useful for smaller manufacturing businesses that need to produce compressed air for medical applications. Small breweries can also benefit from the low-noise capabilities of these compressors.
Low-noise air compressors come in various sizes and features. For smaller jobs, you can purchase a one-gallon model that is lightweight and portable. For larger jobs, you can purchase one with a larger tank that can provide more pressure for longer jobs. However, a larger tank will make the compressor heavier and harder to transport. To avoid this, make sure to check the size of the tank and how much power it can handle.
Considering a low-noise air compressor for your business? If so, you’ve come to the right place. There are a variety of affordable and dependable low-noise options to choose from. A CAT 10020C, for example, is designed to provide high-volume air to many outlets at once. A CAT 10020C comes with a 10-gallon tank, wheels, and a carrying handle.
Noise levels can also affect the productivity of employees. When employees work with air compressors in close proximity to each other, they may develop tinnitus. If employees are free from tinnitus because of the loud noise, they are likely to work more efficiently. Moreover, it will be easier for them to focus and communicate efficiently. If you need a compressor, a low-noise one is an excellent choice.

China Good quality Oil Free Screw Air Compressor CZPT RF55 VSD 2 Stage Standing   air compressor repair near meChina Good quality Oil Free Screw Air Compressor CZPT RF55 VSD 2 Stage Standing   air compressor repair near me
editor by CX 2023-04-19

China Hot selling CZPT Efficient Water Lubricated Oilless 2 Stage Pm VSD Rotary Screw Type Air Compressor for Chemical Industry wholesaler

Item Description


one. Reduced temperature implies more performance
With an exceptionally lower managing temperature of significantly less than 60ºC, in close proximity to isothermal compression is reached. 
The outstanding cooling capability of h2o eliminates the heat and provides a lot more air for every kW of energy.
This also gets rid of the require for an internal cooler and aftercooler, the CZPT energy use reduces force fall to a minimum.

2. Chopping the maintenance expense
Spare elements only need to have air filter elements and h2o filter factors
Low working temperature ensures the extended services lifestyle of the screw air conclude, staying away from expensive upkeep fees for the screw rotor.
Reduced temperature lowers the pressure on other parts ensuring lengthy existence.

3. Keeping away from the costs of further CZPT to combat force fall
These expenses, even though not apparent at the time of purchase, are really high and contribute significantly to the whole expense of ownership.

4. No Gearbox No require for CZPT oil lubrication.

5. Simple structure 
Much less relocating areas than the dry oil-free screw air compressor, meaning there is less to go wrong, 
whilst equilibrium bearing loads prolong the compression element services lifestyle for reduced-cost operation. 


Solution Parameters


Solution Description


Business Profile



Hot Sale Items




           2~10bar Oil-injected                        7~16bar All-in-1                       Small Solitary-section
       Screw Air Compressor                   Screw Air Compressor                 Screw Air Compressor  


         2~40bar one hundred% Oil-free                   8~12bar one hundred% Oil-free                Diesel Engine Moveable
       Screw Air Compressor                   Scroll Air Compressor                 Screw Air Compressor  



Major Item


What we can offer:

* Oil-injected Screw Air Compressor (2~sixteen bar)
* All-in-1 Screw Air Compressor with Tank, Dryer, and Filters (7~sixteen bar)
* Solitary-section Tiny Screw Air Compressor for Home use (8~ten bar)
* Water-injected Oil-totally free Screw Air Compressor (2~40 bar)
* Oil-totally free Scroll Air Compressor (8~twelve bar)
* Diesel&Electric powered Engine Portable Screw Air Compressor (8~30 bar)
* Air Dryer, Air tank, Filters, and other Spare elements


Deciding on the Correct Air Compressor For Your Home

You will discover that air compressors are indispensable tools for a assortment of circumstances, like garages, home workshops, and basements. These tools can electricity a selection of equipment, and each and every model is sized to suit the work at hand. Since air compressors have only one motor, they are light-weight, compact, and straightforward to deal with. Employing 1 air compressor to energy many tools will also lessen the put on and tear on personal components. This article will introduce some critical traits to appear for when deciding on the appropriate air compressor for your residence.

Optimistic displacement

A optimistic displacement compressor applies force to a fluid, whilst a centrifugal 1 does the reverse. A constructive displacement compressor creates the preferred force by trapping air and increasing its quantity. Its discharge valve releases the substantial-pressure gas. These compressors are employed in industrial purposes and nuclear energy plants. The big difference between a good and damaging displacement compressor is that a good displacement compressor can compress and release air at a regular rate.
A positive displacement air compressor makes use of a reciprocating piston to compress air. This reduces the volume of the air in the compression chamber, and a discharge valve opens when the force reaches the preferred stage. These compressors are employed in bicycle pumps and other pneumatic tools. Optimistic displacement air compressors have a number of inlet ports and have several configurations. Optimistic displacement air compressors have a single-acting and double-acting piston, and can be oil-lubricated or oil-free of charge.
A positive displacement air compressor is various from a dynamic compressor. It draws air into the compression chambers and then releases the stress when the valve is opened. Optimistic displacement compressors are frequent in industrial purposes and are offered in solitary-acting, double-performing, and oil-lubricated types. Large piston compressors have ventilated intermediate pieces and crossheads on gudgeon pins. Scaled-down versions have permanently sealed crankcases with bearings.


Oil-free of charge air compressors have some benefits over their oil-lubricated counterparts. They do not call for lubrication oil because they are coated with Teflon. The content has one particular of the lowest coefficients of friction and is layered, so it slides past other layers with tiny hard work. Due to the fact of this, oil-free compressors have a tendency to be less expensive and even now produce similar functionality. Oil-free of charge compressors are a very good decision for industrial apps.
The lifestyle of an oil-free of charge air compressor is substantially more time than an oil-lubricated counterpart. These designs can function up to 2,000 several hours, 4 times more time than the common oil-lubed compressor. Oil-free compressors also have a drastically decrease operating sound than their oil-lubricated counterparts. And simply because they will not need oil changes, they are quieter. Some even previous up to 2,000 hrs.
An oil-free air compressor is a good selection if your software demands high amounts of purity. A number of applications require extremely-pure air, and even a fall of oil can lead to merchandise spoilage or hurt to generation tools. In addition to the overall health risks, an oil-totally free air compressor decreases the fees connected with oil contamination and minimizes leaks. It also eradicates the want for oil selection, disposal, and remedy.
A normal oil-free air compressor is very effective, necessitating only about eighteen% of the total load horsepower. However, oil-free of charge compressors have a higher chance of premature failure and are not advisable for big-scale industrial programs. They may possibly also use up to 18% of the compressor’s complete ability. They could audio attractive, but you have to make confident you understand the advantages of an oil-free of charge air compressor prior to deciding on one for your industrial applications.


A one-phase air compressor is made to offer the electricity for a one pneumatic tool or gadget. These devices are normally scaled-down than two-phase compressors and generate considerably less warmth and power. These machines are not developed for hefty-duty industries, but they are nonetheless hugely efficient for a assortment of apps, such as vehicle shops, fuel stations, and different producing vegetation. They can also be utilized in borewells, as they are ideal for modest areas with low air movement needs.
A solitary-phase air compressor has a single cylinder and two valves – the inlet and the supply valves. Equally of these valves perform mechanically, with the inlet valve controlling torque and the delivery one particular controlling air pressure. Typically, one-stage compressors are run by a gas motor, but there are also electric powered designs accessible. The solitary-phase air compressor is the most frequent sort of air compressor. It has a solitary cylinder, one piston, and one particular air cylinder.
The single-phase air compressors are utilized for little assignments or individual use. A two-phase air compressor is a lot more efficient for industrial projects. Its longer air end life makes it a lot more efficient. It is also a lot more successful for use in the automotive sector, exactly where the motor has many cylinders. In standard, single-phase compressors need a higher power degree. The one-stage design is ideal for small assignments, even though a two-phase a single is appropriate for bigger-scale arsenals.


The cubic foot-for each-moment (CFM) of an air compressor is the output of the machine. In get to estimate the CFM degree, commence by seeking at the compressor’s requirements. You should know how many cubic ft the device can keep and how several kilos for each sq. inch it can compress. When you have these information, you can compute the CFM. Now you can use these quantities to select an suitable air compressor for your demands.
The most common way to enhance the CFM of an air compressor is to change the regulator down. By turning the dial down, the air compressor will make far more than 10 CFM. You can also consider connecting two output valves. Make positive that the options are altered appropriately prior to you commence. This will guarantee that your air compressor is performing at its maximum efficiency and lifespan. To increase the CFM of your air compressor, very first check that your regulator is calibrated for the wanted force level.
To determine the CFM of an air compressor, first establish the tank quantity of the device. Then, multiply this volume by the time it will take to fill the tank. Then, divide the consequence by sixty seconds to determine the CFM. When you know how much air your device can keep, you can decide on a ideal air compressor. If you’re doing work in a confined spot, you need to get a device with a big tank.


The PSI of an air compressor is the stress that it can output. A normal air compressor has a gauge linked to the airline at the base, next to it, or amongst the two. The gauge tells the actual force of the air compressor, even though the cut-out force is decided by the producer. The maker endorses that you set the reduce-out pressure 20 to forty PSI greater than the manufacturing facility advisable force. If you want to established the force for your nail gun, you can use the reduce-in and reduce-out pressures on your compressor, and the tank will not exceed this variety.
The PSI of an air compressor measures the force that it can provide, which is often in pounds per sq. inch. For most air tools, you want at minimum forty to ninety psi. In standard, reciprocating air compressors function on an on/off basis. This connection is known as the duty cycle. All air compressors are rated for a distinct obligation cycle, this sort of as fifty percent on and twenty-5 percent off.
The Psig of an air compressor is not free, as numerous folks think. The PSI of an air compressor is not free, but it is vital to preserve it for safe functions. If you happen to be obtaining trouble sustaining a steady stress, contemplate turning down the PSI of your compressor by 2 psig. This will decide the vital pressure for the equipment. You’ll also increase the sum of energy in the system by 1 %.

Electrical power supply

The electricity supply for an air compressor is vital in its operation. With out the proper voltage and amperage, air compressors will not perform appropriately. The electrical power source must be shut to the compressor so that it can plug into an electrical outlet. If it is too significantly from the outlet, the compressor might not be in a position to build sufficient force. When this takes place, the fuse inside the air compressor will change off to protect the user. The electricity source should be a secure distance from the compressor.
Most manufacturers do not specify the energy source for an air compressor. Relying on the horsepower, the compressor will need around 4 amps of electricity. A a single-horsepower compressor would attract about twelve amps. If it ended up run by a standard 120-volt home provide, its motor would exceed the 15-amp breaker capability. A larger air compressor, nevertheless, will call for a separate fifteen-amp electrical power supply, producing it not possible to use it with this kind of electrical power source.
The power resource for an air compressor is usually electrical alternating present (AC) that is equal to the voltage on a common wall outlet. A 3-period air compressor, on the other hand, calls for a particular AC offer with three electrical offset pulses. Regardless of the type of air compressor, the electrical power resource need to be appropriate with the incoming energy service. One particular of the most common difficulties when attempting to connect an air compressor to an AC power source is undersized wire. This final results in reduced voltage and high amperes, tripping of over-load relays and blown fuses.

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