Tag Archives: dry screw

China best 250kw Variable Speed Drive Mute AC Two Stage Rotary Screw Oil Free Dry Air Compressor portable air compressor

Product Description

      

   Specification
  Model Capacitiy (FAD)M3/min Power kw Noise level db Weight KG
7bar 8.5bar 10bar Water Cooling Air Cooling
OFA1 OFA15 2.4 2.1 1.8 15 74   1,030
OFA22 3.7 3.2 2.7 22 74   1,070
OFA30 4.8 4.4 4.0 30 74   1,300
OFA37 5.9 5.3 5.0 37 74   1,355
OFA45 7.0 6.5 6.1 45 74   1,390
OFA2 OFA55 9.2 7.9 7.3 55 74   1,860
OFA75 12.2 11.2 10.7 75 74   1,935
OFA90 14.7 13.5 12.7 90 74   2,000
OFA3 OFA110 19.3 17.2 16.0 110 74   3,660
OFA132 22.9 19.5 18.8 132 74   3,700
OFA4 OFA160 29.4 25.7 23.8 160 74   5,300
OFA200 36.6 33.1 30.4 200 74   5,380
OFA250 44.5 41.0 37.4 250 74   5,450
OFA275 47.4 43.0 41.0 275 74   5,500
OFA5 OFA315 51.5 47.6 46.0 315 74   6,000
OFA355 56.3 52.6 50.4 355 74   9,050
OFW1 OFW37 5.9 5.3 5.0 37 74 1,355  
OFW45 7.0 6.5 6.1 45 74 1,450  
OFW2 OFW55 8.8 7.9 7.3 55 74 1,800  
OFW75 11.9 11.2 10.7 75 74 1,850  
OFW90 14.3 13.5 12.7 90 74 1,925  
OFW3 OFW110 19.1 17.1 16.0 110 74 2,635  
OFW132 21.9 19.6 18.9 132 74 2,760  
OFW4 OFW160 28.3 26.1 24.2 160 74 3,850  
OFW200 36.1 33.1 30.4 200 74 4,000  
OFW250 43.1 41.0 37.0 250 74 4,100  
OFW275 46.4 43.0 41.0 275 74 4,300  
OFW5 OFW315 50.9 47.6 46.0 315 74 6,550  
OFW355 56.3 52.6 50.4 355 74 6,950  
OFW400 62.1 57.8 55.8 400 74 7,050  
OFW450 76.5 71.5 63.8 450 74 8,400  
OFW500 83.9 78.3 73.1 500 74 8,400  
OFW630 102.9 95.7 89.0 630 74 9,125  
OFW750 122.8 109.6 101.8 750 74 9,225  

                                             Company Profile

ZheJiang Napu compressor Technology Co.,LTD was established in 2012  based in ZheJiang ,specializing in oil-free rotary screw air compressors, offering a wide range of products from airends to compressors . 
       With over 10 years experience in oil free screw air compressor. NAPU Compressor is compliant with ISO 8573-1, Class 0 standard and audited by TUV Rheinland and China National Quality Inspection Center of Compressor and Refrigerator.   
        The company is also compliant with ISO 9001:14001 and is CZPT in the domestic market for its quality-driven culture. The oil-free compressors manufactured by the company are used in a variety of sectors including some of our valued clients like CASC-China Aerospace Science Corporation, NORINCO-China North Industries Group, CNNC-China National Nuclear Group, CHANG AN AUTO, SINOPHARM, BYD and CALT and Sino-Chemical etc.
         Continuous improvement in productivity and efficiency is our goal, and we continue to offer an extensive services including our own branded oil-free compressor package as well as after-sales services for other leading brands.

 

                                              Product Features

1. In house designed airend
2. 100% oil free air certified by Germany TUV.
3. Double-layer structure to reduce he noise.
4. Air Cooling and Water cooling are available.
5. VSD control are available.
6.Touch Screen PLC with preset running schedule, more intelligent control.
7.OEM&ODM service are accepted

 

                                                         FAQ

Q1. Are you trading company or manufacture ?
A: We are professional manufacture of oil free air compressors. More than 20 years of experience in air compressor manufacturing.
 
Q2. What’s payment term ?
A: T/T, Western Union, Paypal, Credit Card, and etc. Also we could accept USD, RMB, Euro and other currency.
 
Q3. How about your after-sales service ?
A: 1.We can provide customers with installation and commissioning online instructions.
   
Q4. How about your warranty?
A: One year for the whole machine and 5 years for screw air end, except consumable spare parts.
 
Q5. Do you have any certificate ?
A: Yes, we can offer CE ,ISO  and certificate as clients’ demande.
 
 
Q6. How do you control quality ?
A: 1. The raw materials are strictly inspected
    2. Each compressor must pass at least 8 hours of continuous testing before leaving the factory.
  
Q7.How long could your air compressor be used?
A: Usually, more than over 10 years.

      

After-sales Service: Online Support
Warranty: 12 Months
Lubrication Style: Oil-free
Cooling System: Water Cooling
Power Source: AC Power
Cylinder Position: Horizontal
Customization:
Available

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air-compressor

Choose an Air Compressor for Your Business

There are several factors to consider when choosing an air compressor for your business. One factor to consider is the type of compressor you are looking for, which may include single-stage, low noise, and positive displacement. Hope this article helps you make the right decision. After all, your business success will depend on this device! Let’s take a closer look at these factors. Also, consider what compressor manufacturers say about their products.

Positive displacement

Positive displacement air compressors compress air by drawing in a volume from an inlet and extruding it out of a chamber. This increases the pressure at which the gas can be pumped at rates that cannot be pumped through the outlet at lower pressures at higher mass flow rates. These types of compressors are available in single-acting and double-acting configurations. They are classified by the number of cylinders.
There are two different types of air compressors: reciprocating air compressors and screw compressors. Both are roll machines. Positive displacement air compressors use pistons and cylinders to compress air. The resulting air pressure builds up within the compressor housing, increasing the potential energy of the compressed air. Screw air compressors are the most popular positive displacement air compressors, which can be either single-stage screw-blade air compressors or multi-stage screw-blade oil-immersed screw air compressors.
Positive displacement flowmeters use a rotating measuring chamber to divide the fluid into discrete quantities. The number of times the chamber was refilled and emptied was used to estimate the total flow. However, positive displacement flow meters are prone to leaks, reducing the accuracy of the estimates. If a leak occurs, it can cause false readings and damage the compressor. However, leaks in positive displacement air compressors can reduce pressure.
The most common types of positive displacement air compressors are screw, reciprocating, and vane. Rotary positive displacement air compressors are also available as well as many other air compressors. Positive displacement air compressors are most commonly used in large manufacturing facilities. If you are considering an air compressor for commercial or industrial applications, it is imperative to understand how the components of the unit work. Please read the information below to learn more before deciding which application is best for you.
Positive displacement air compressors use a piston to force air into a chamber, compressing the air in the process. The piston moves in the opposite direction, thereby reducing the volume of the chamber. When the amount of air in the chamber reaches its maximum value, the valve opens, allowing it to escape at higher pressure. Positive displacement air compressors are generally less efficient than centrifugal compressors. However, they are still an excellent choice for a variety of applications.
air-compressor

Single-stage

The discharge pressure of the single-stage air compressor is used to control the operation of the compressor. Properly designed load/unload controls allow the air compressor to operate at its most efficient point while minimizing stress on the main engine bearings. Single-stage air compressors can approach variable speed efficiency with appropriate storage capacity. However, improper storage can cause premature bearing wear on the main unit. If this is the case, a single-stage air compressor may not be ideal.
A single-stage air compressor has only one cylinder, which means one stroke is required to move air from one cylinder to another. Pressure is measured in cubic feet per minute or CFM. Tank size is also important as a large single-stage air compressor may be required to operate multiple air tools. Single-stage air compressors can be used in a variety of applications and can last for years.
For the most common uses, single-stage air compressors are the most practical option. These devices work with most hand tools, from hammers to grinders. Single-stage air compressors are lightweight and easy to move. However, two-stage air compressors provide more CFM, making them a better choice for industrial or commercial use. However, two-stage compressors are not suitable for private use. Therefore, if your main purpose is DIY and craft projects, it is better to choose a single-stage air compressor.
Compared with two-stage air compressors, single-stage screw air compressors are cheaper. They come from a variety of manufacturers and range in power from 3 to 600 horsepower. Single-stage air compressors are a cost-effective solution for a variety of air compressor needs. They offer flexibility and multiple control methods, making them an excellent choice for many different applications. Therefore, when choosing an air compressor for your business, choose the one with the most suitable functions.
Single-stage air compressors are the most affordable and easy-to-use air compressors for small to medium jobs. They also have higher compression ratios. The compression ratio is the ratio of absolute discharge pressure to absolute inlet pressure. When calculating the ratio, it takes into account atmospheric pressure and gauge pressure. The compression ratio pushes the surface area of ​​the rotor, which increases the thrust load.
Single-stage air compressors are smaller and easier to transport than two-stage units. Single-stage air compressors have one air intake, and two-stage air compressors have two air intakes. The difference between single-stage and two-stage air compressors largely depends on the number of times the air is compressed. A single-stage air compressor compresses the air once, while a dual-stage air compressor compresses the same amount of air twice.
air-compressor

low noise

Low noise air compressors are ideal for a variety of applications. While no air compressor is completely silent, some models are much quieter than others. For the Hitachi EC28M portable compressor, the noise level is 59 decibels. The compressor features steel rollers that protect the internal components and give it a sleek, modern look. It also has a one-gallon fuel tank and a half-horsepower drive.
Noise from air compressors can be distracting and reduce productivity. It is important to choose low-noise air compressors to keep employees healthy and happy at work. While noise is an unfortunate aspect of working on the shop floor, reducing it can improve productivity. By reducing distracting noise, employees can focus on their work and communicate more effectively. That means higher quality work and happier clients. If you’re looking for a low-noise air compressor, be sure to read the tips below.
Low noise air compressors are an excellent choice for businesses of all sizes. These powerful tools can run multiple tools simultaneously. The two water tanks are made of rust-resistant aluminum and are stackable. This air compressor is heavier and can handle large jobs with ease. It costs more than other air compressors, but it can handle a lot of work efficiently. CZPT Air Tools air compressors come with a one-year warranty and are highly recommended by contractors.
Noiseless air compressors are generally more expensive than comparable products, but they are worth the extra cost. Noiseless compressors are a good option for businesses that need to avoid disturbing nearby people. For example, you might want to consider a low-noise air compressor for a dental office, which cannot tolerate noise. Fortunately, this problem can be solved by relocating the compressor to a location that is more isolated from your workspace.
One brand of low-noise air compressors offers two models. The CZPT Air Tools 2010A features a large cast aluminum can, regulating pressure gauge, and two universal quick-connects. It produces 68 decibels of noise when it works. It has a large 8-gallon fuel tank capacity and has wheels and handles for easy transport. Its powerful engine produces a low noise level of 68 decibels.
Another popular low noise air compressor is the Makita MAC210Q Quiet Series. This model is capable of producing up to 71.5 decibels of sound, which is the amount of air it produces at 90PSI. The MAC210Q features a durable oil-free pump and weighs just 36 pounds with a handle and wheels. These compressors are easy to move and ideal for indoor work.
China best 250kw Variable Speed Drive Mute AC Two Stage Rotary Screw Oil Free Dry Air Compressor   portable air compressorChina best 250kw Variable Speed Drive Mute AC Two Stage Rotary Screw Oil Free Dry Air Compressor   portable air compressor
editor by CX 2023-05-24

China Custom Dry Oil Free 100% No Oil Screw Air Compressor for Food CZPT Medical Oxygen CZPT with Hot selling

Solution Description

 

Item Description

With CE and Class certification, the CZPT dry rotary screw oil-free air compressor can give you with 100% oil-free air and make sure the basic safety of your manufacturing line. Electricity ranges from 37 to 315 kilowatts.
Runningway set pace dry oil-free of charge screw air compressor can offer oil-free of charge air for a lengthy time. Can offer you with a continual offer of air.
The CZPT VSD dry oil-free of charge screw air compressor could supply variable frequency air to a technique. Saving income permits you to meet your various air ability demands. The air capacity ranges in between 2.6 and 51.5 m3/min.
 

Certifications

Item Parameters

Detailed Photos

 

Model Maximum Working Pressure Capacity(FAD)* Installed Motor Power Cooling Method Noise Level Air Outlet Pipe
Diameter
Dimension Weight
50hz
bar(g) psig m3/min cfm kw hp dB(A) L W H kg
RF37-7A(W) 7 102 6.5 229.5 37 50 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2000
RF37-8A(W) 8 116 6.4 226 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2000
RF37-10A(W) 10 145 6.3 222.4 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2000
RF45-7A(W) 7 102 7.7 271.8 45 60 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2100
RF45-8A(W) 8 116 6.5 229.5 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2100
RF45-10A(W) 10 145 6.8 240.1 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2100
RF55-7A(W) 7 102 9.6 339 55 75 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2000
RF55-8A(W) 8 116 8.8 310.7 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2000
RF55-10A(W) 10 145 7.7 271.9 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2000
RF75-7A(W) 7 102 13.5 476.7 75 100 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2100
RF75-8A(W) 8 116 13.3 469.6 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2100
RF75-10A(W) 10 145 12.1 427.3 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2100
RF90-7A(W) 7 102 16.2 572 90 120 Air Cooling 70 DN50 2160 1450 2200 2000
Water Cooling 63 DN80 2180 1450 2200 2100
RF90-8A(W) 8 116 15.6 550.9 Air Cooling 70 DN50 2160 1450 2200 2000
Water Cooling 63 DN80 2180 1450 2200 2100
RF90-10A(W) 10 145 14.2 501.4 Air Cooling 70 DN50 2160 1450 2200 2000
Water Cooling 63 DN80 2180 1450 2200 2100
RF110-7A(W) 7 102 19.5 688.6 110 150 Air Cooling 69 DN80 4050 1650 2000 3700
Water Cooling 67 DN80 2550 1650 2000 2700
RF110-8A(W) 8 116 19.2 678 Air Cooling 69 DN80 4050 1650 2000 3700
Water Cooling 67 DN80 2550 1650 2000 2700
RF110-10A(W) 10 145 17.5 618 Air Cooling 69 DN80 4050 1650 2000 3700
Water Cooling 67 DN80 2550 1650 2000 2700
RF132-7A(W) 7 102 23.5 829.8 132 175 Air Cooling 70 DN80 4050 1650 2000 3700
Water Cooling 67 DN80 2550 1650 2000 2800
RF132-8A(W) 8 116 22.8 805.1 Air Cooling 70 DN80 4050 1650 2000 3700
Water Cooling 67 DN80 2550 1650 2000 2800
RF132-10A(W) 10 145 20.5 723.9 Air Cooling 70 DN80 4050 1650 2000 3700
Water Cooling 67 DN80 2550 1650 2000 2800
RF145-7A(W) 7 102 23.9 844 145 195 Air Cooling 70 DN80 4050 1650 2000 3800
Water Cooling 68 DN80 2550 1650 2000 2900
RF145-8A(W) 8 116 22.1 780.4 Air Cooling 70 DN80 4050 1650 2000 3800
Water Cooling 68 DN80 2550 1650 2000 2900
RF145-10A(W) 10 145 20.5 723.9 Air Cooling 70 DN80 4050 1650 2000 3800
Water Cooling 68 DN80 2550 1650 2000 2900
RF160-7A(W) 7 102 28.5 1006.4 160 215 Air Cooling 75 DN80 5040 1650 2100 5300
Water Cooling 67 DN80 3100 1650 2000 2900
RF160-8A(W) 8 116 26.4 932.3 Air Cooling 75 DN80 5040 1650 2100 5300
Water Cooling 67 DN80 3100 1650 2000 2900
RF160-10A(W) 10 145 24.5 865.2 Air Cooling 76 DN80 5040 1650 2100 5300
Water Cooling 67 DN80 3100 1650 2000 2900
RF200-7A(W) 7 102 36.1 1274.8 200 270 Air Cooling 76 DN80 5040 1650 2100 5400
Water Cooling 65 DN80 3100 1650 2000 4000
RF200-8A(W) 8 116 33.9 1197.1 Air Cooling 76 DN80 5040 1650 2100 5400
Water Cooling 65 DN80 3100 1650 2000 4000
RF200-10A(W) 10 145 30.8 1087.6 Air Cooling 76 DN80 5040 1650 2100 5400
Water Cooling 67 DN80 3100 1650 2000 4000
RF250-7A(W) 7 102 45.2 1596.2 250 350 Air Cooling 75 DN80 5040 1650 2100 5500
Water Cooling 65 DN80 3100 1650 2000 4100
RF250-8A(W) 8 116 43.4 1532.6 Air Cooling 76 DN80 5040 1650 2100 5500
Water Cooling 65 DN80 3100 1650 2000 4100
RF250-10A(W) 10 145 38.8 1370.2 Air Cooling 76 DN80 5040 1650 2100 5500
Water Cooling 65 DN80 3100 1650 2000 4100
RF275-7A(W) 7 102 46.8 1652.7 275 370 Air Cooling 76 DN80 5040 1650 2100 5500
Water Cooling 65 DN80 3100 1650 2000 4200
RF275-8A(W) 8 116 43.5 1536.1 Air Cooling 76 DN80 5040 1650 2100 5500
Water Cooling 65 DN80 3100 1650 2000 4200
RF275-10A(W) 10 145 41.5 1465.5 Air Cooling 76 DN80 5040 1650 2100 5500
Water Cooling 65 DN80 3100 1650 2000 4200
RF315-7A(W) 7 102 53 1871.6 315 420 Air Cooling 76 DN80 5040 1650 2100 5800
Water Cooling 65 DN80 3100 1650 2000 4400
RF315-8A(W) 8 116 51.5 1818.7 Air Cooling 76 DN80 5040 1650 2100 5800
Water Cooling 65 DN80 3100 1650 2000 4400
RF315-10A(W) 10 145 49.5 1748 Air Cooling 76 DN80 5040 1650 2100 5800
Water Cooling 65 DN80 3100 1650 2000 4400
Model Maximum Working Pressure Capacity(FAD)* Installed Motor Power Cooling Method Noise Level Air Outlet Pipe
Diameter
Dimension Weight
50hz
bar(g) psig m3/min cfm kw hp dB(A) L W H kg
RF37-7A(W) 7 102 6.5 229.5 37 50 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2000
RF37-8A(W) 8 116 6.4 226 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2000
RF37-10A(W) 10 145 6.3 222.4 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2000
RF45-7A(W) 7 102 7.7 271.8 45 60 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2100
RF45-8A(W) 8 116 6.5 229.5 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2100
RF45-10A(W) 10 145 6.8 240.1 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2100
RF55-7A(W) 7 102 9.6 339 55 75 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2000
RF55-8A(W) 8 116 8.8 310.7 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2000
RF55-10A(W) 10 145 7.7 271.9 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2000
RF75-7A(W) 7 102 13.5 476.7 75 100 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2100
RF75-8A(W) 8 116 13.3 469.6 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2100
RF75-10A(W) 10 145 12.1 427.3 Air Cooling 70 DN50 2160 1450 2200 1900
Water Cooling 63 DN80 2180 1450 2200 2100
RF90-7A(W) 7 102 16.2 572 90 120 Air Cooling 70 DN50 2160 1450 2200 2000
Water Cooling 63 DN80 2180 1450 2200 2100
RF90-8A(W) 8 116 15.6 550.9 Air Cooling 70 DN50 2160 1450 2200 2000
Water Cooling 63 DN80 2180 1450 2200 2100
RF90-10A(W) 10 145 14.2 501.4 Air Cooling 70 DN50 2160 1450 2200 2000
Water Cooling 63 DN80 2180 1450 2200 2100
RF110-7A(W) 7 102 19.5 688.6 110 150 Air Cooling 69 DN80 4050 1650 2000 3700
Water Cooling 67 DN80 2550 1650 2000 2700
RF110-8A(W) 8 116 19.2 678 Air Cooling 69 DN80 4050 1650 2000 3700
Water Cooling 67 DN80 2550 1650 2000 2700
RF110-10A(W) 10 145 17.5 618 Air Cooling 69 DN80 4050 1650 2000 3700
Water Cooling 67 DN80 2550 1650 2000 2700
RF132-7A(W) 7 102 23.5 829.8 132 175 Air Cooling 70 DN80 4050 1650 2000 3700
Water Cooling 67 DN80 2550 1650 2000 2800
RF132-8A(W) 8 116 22.8 805.1 Air Cooling 70 DN80 4050 1650 2000 3700
Water Cooling 67 DN80 2550 1650 2000 2800
RF132-10A(W) 10 145 20.5 723.9 Air Cooling 70 DN80 4050 1650 2000 3700
Water Cooling 67 DN80 2550 1650 2000 2800
RF145-7A(W) 7 102 23.9 844 145 195 Air Cooling 70 DN80 4050 1650 2000 3800
Water Cooling 68 DN80 2550 1650 2000 2900
RF145-8A(W) 8 116 22.1 780.4 Air Cooling 70 DN80 4050 1650 2000 3800
Water Cooling 68 DN80 2550 1650 2000 2900
RF145-10A(W) 10 145 20.5 723.9 Air Cooling 70 DN80 4050 1650 2000 3800
Water Cooling 68 DN80 2550 1650 2000 2900
RF160-7A(W) 7 102 28.5 1006.4 160 215 Air Cooling 75 DN80 5040 1650 2100 5300
Water Cooling 67 DN80 3100 1650 2000 2900
RF160-8A(W) 8 116 26.4 932.3 Air Cooling 75 DN80 5040 1650 2100 5300
Water Cooling 67 DN80 3100 1650 2000 2900
RF160-10A(W) 10 145 24.5 865.2 Air Cooling 76 DN80 5040 1650 2100 5300
Water Cooling 67 DN80 3100 1650 2000 2900
RF200-7A(W) 7 102 36.1 1274.8 200 270 Air Cooling 76 DN80 5040 1650 2100 5400
Water Cooling 65 DN80 3100 1650 2000 4000
RF200-8A(W) 8 116 33.9 1197.1 Air Cooling 76 DN80 5040 1650 2100 5400
Water Cooling 65 DN80 3100 1650 2000 4000
RF200-10A(W) 10 145 30.8 1087.6 Air Cooling 76 DN80 5040 1650 2100 5400
Water Cooling 67 DN80 3100 1650 2000 4000
RF250-7A(W) 7 102 45.2 1596.2 250 350 Air Cooling 75 DN80 5040 1650 2100 5500
Water Cooling 65 DN80 3100 1650 2000 4100
RF250-8A(W) 8 116 43.4 1532.6 Air Cooling 76 DN80 5040 1650 2100 5500
Water Cooling 65 DN80 3100 1650 2000 4100
RF250-10A(W) 10 145 38.8 1370.2 Air Cooling 76 DN80 5040 1650 2100 5500
Water Cooling 65 DN80 3100 1650 2000 4100
RF275-7A(W) 7 102 46.8 1652.7 275 370 Air Cooling 76 DN80 5040 1650 2100 5500
Water Cooling 65 DN80 3100 1650 2000 4200
RF275-8A(W) 8 116 43.5 1536.1 Air Cooling 76 DN80 5040 1650 2100 5500
Water Cooling 65 DN80 3100 1650 2000 4200
RF275-10A(W) 10 145 41.5 1465.5 Air Cooling 76 DN80 5040 1650 2100 5500
Water Cooling 65 DN80 3100 1650 2000 4200
RF315-7A(W) 7 102 53 1871.6 315 420 Air Cooling 76 DN80 5040 1650 2100 5800
Water Cooling 65 DN80 3100 1650 2000 4400
RF315-8A(W) 8 116 51.5 1818.7 Air Cooling 76 DN80 5040 1650 2100 5800
Water Cooling 65 DN80 3100 1650 2000 4400
RF315-10A(W) 10 145 49.5 1748 Air Cooling 76 DN80 5040 1650 2100 5800
Water Cooling 65 DN80 3100 1650 2000 4400

How to Repair and Maintain an Air Compressor

A compressor is a device used to move air from one place to another. Air enters the air compressor through the intake valve. Inside the compressor, the vanes on the inner rotor rotate within an eccentric cavity. The self-adjusting length arm divides the space into multiple cavities of different sizes. As the rotor rotates, air fills the cavity. As air flows around the cavity, it builds pressure and is squeezed out of the compressor output.

Positive displacement

Positive displacement air compressors use reciprocating pistons to compress air. Gas is drawn in during the suction stroke and compressed by moving the piston in the opposite direction. It then discharges the compressed air by moving it in the opposite direction. This type of air compressor is most commonly found in automobiles, refrigerators, and other applications that require high pressure. However, it is not as efficient as a centrifugal compressor.
Most modern air compressors use positive displacement. Positive displacement models capture a volume of air in the compression chamber and distribute it when the pump is operating at maximum capacity. They are more economical than their negative displacement counterparts. Reciprocating screw air compressors are the most common positive displacement compressors. The reciprocating screw air compressor adopts a water jacket around the cylinder and is often used in processes such as oil drilling.
A bicycle pump is an example of positive displacement compression. Air is drawn into the cylinder and compressed by the moving piston. A piston compressor works on the same principle, but it uses a rotating crankshaft or connecting rod to complete the movement of the pistons. There are two types of positive displacement compressors: single-acting and double-acting. Both types work on the same principle, both are positive displacement compressors. The difference between the two types is the pressure ratio.
In air compression, positive displacement compression reduces the volume of the fluid and reduces its viscosity. This results in higher pressure ratios and is used in centrifugal, axial, and scroll compressors. Positive displacement is a common feature of most air compressors. Positive displacement compressors offer the same benefits and are more energy-efficient when applied to oil-free and gas applications. This type of compression is usually the best choice for low-pressure applications.
air-compressor

oil free

If you’re looking for an air compressor for your business, consider an oil-free air compressor. These models offer cleaner, quieter operation than traditional air compressors and require less maintenance. They also meet ISO Class 0 or Class 1 air purity requirements. Oil-free air compressors are also quieter, with fewer moving parts and less noise. These advantages make oil-free air compressors an ideal solution for many commercial applications.
Air purity is critical in many industries. Even the tiniest drop of oil can damage production equipment or damage products. The best way to find an oil-free air compressor for your business is to consider the process and end product. As air quality improves, more and more businesses are turning to oil-free compressors. Some of the advantages and disadvantages of these air compressors are:
When choosing an oil-free air compressor, it is important to understand the terminology used in the industry. Knowing these terms will make it easier for you to choose the right compressor for your needs. ACTFM, or actual cubic feet per minute, is an industry term for measuring the amount of air pumped in one minute under rated conditions. Although a simple number, it can be very useful in determining which type of air compressor is best for your application.
The ISO 8573-1 international standard defines air quality and provides air purity classifications. The strictest classification is air purity class 0. Many manufacturers claim that oil-free air compressors meet this standard. However, a class 0 oil-free air compressor does not necessarily mean that the air is free of contaminants. In fact, Class 0 is the benchmark for air purity. While zero air quality is the highest level, that doesn’t mean it’s completely oil-free.
air-compressor

double acting

A double-acting air compressor is a device that uses compressed air to generate electricity. Its working principle is based on piston and connecting rod. The connecting rod connects the crankshaft to the piston through pins and caps. The piston moves as the piston moves. Rods are usually made of forged carbon steel. In terms of service and maintenance, double-acting compressors require regular vise maintenance and proper cleaning.
The displacement of the compressor is a measure of the displacement that the piston can produce in a certain period of time. Displacement is usually expressed in actual cubic feet per minute. The exact calculation depends on the type of cylinder and the configuration of the compressor. Single-acting cylinders can have head-end or crank-end displacement, both of which can be measured using the displacement equation. A double-acting air compressor will use this equation. 4 and 6 calculate the displacement.
Double-acting air compressors have multiple cylinders and are made of cast iron. They are water-cooled and have a mechanical connection between the piston and connecting rod. A double-acting compressor compresses air twice per revolution of the motor. One cylinder moves up, while the other cylinder moves down. The piston moves down, allowing air to enter through valve #1. During the operation of the compressor, the temperature of the air and gas increases.
Double-acting air compressors typically have high pressure and are considered workhorses. Double-acting compressors also feature intercooling and double compression. As a result, these machines tend to last longer than single-acting compressors. Its low speed and dual compression make it a workhorse in the compressor industry. Double-acting air compressors are workhorses and versatile devices.
air-compressor

fuel tank pressure switch

You can adjust the pressure in the air compressor tank by adjusting the differential pressure. You can turn the mainspring clockwise or counterclockwise to increase or decrease the pressure. This valve will open when the pressure is low enough to start the compressor. If the pressure is too low, the valve should be closed. The cut-in and cut-out pressures should be set to appropriate values. After adjusting the tank pressure, check the hysteresis of the tank pressure switch and set the desired shutoff pressure.
If the pressure in the tank falls below the cut-in level, the tank pressure switch must be replaced. You can test the switch with a multimeter. Make sure the switch is not damaged. If you can’t find the switch, you can look at the other sections. If you find any damaged or missing parts, you should replace them. Otherwise, it may be time to check the tank pressure switch. You may need to disassemble the compressor and remove the switch.
The fuel tank pressure switch is an important part of the air compressor. It keeps you informed of the amount of air delivered by the compressor. If your tank or tank is damaged, your readings will be wrong. If the pressure switch is damaged, it will not function properly and result in incorrect readings. Fortunately, there are some easy ways to fix this. To prevent this from happening, keep the tank pressure switch in good condition.
When the air pressure in the tank drops to the cut-in pressure setting, the switch allows power to flow through it. This will start the motor and pump of the air compressor. Then, if the pressure in the tank rises above the cut-off level, the switch will trip and stop the compressor. This will prevent it from being over-pressurized. Power flow will continue to flow to the motor. Depending on your compressor model, you can change the cut-in and cut-out pressures as needed.

energy source

The power supply of the air compressor is very important. Most air compressors run on 12 VDC, which is ideal for automotive use. Alternatively, you can buy a switching power supply for around $20. No matter which power supply you choose, you must ensure that it can support the maximum current of the compressor. You can find power supplies in all sizes, from quarter-horsepower to five-horsepower.
The voltage required for a three-phase air compressor will vary. Three-phase air compressors require three separate power cords and a three-phase electrical service panel. This is because a standard 120/240-volt electrical service panel is not sufficient to power a three-phase compressor. Additionally, three-phase compressors require three separate isolated wires for the engine and motor circuits. Three-phase compressors do not require a neutral wire.