Tag Archives: conversion screw

China Best Sales 120 HP 90 Kw Two Stage Frequency Conversion Integrated Screw Air Compressor air compressor lowes

Product Description

120 HP 90 kw  Two Stage Frequency Conversion Integrated Screw Air Compressor

TECHNICAL DATA:

Model

WZS-90PM-2S

Air Flow/Working pressure

18.5m3/min @ 8bar

16m3/min @ 10bar

Cooling type of COMPRESSOR

Air cooling

Cooling type of MOTOR

Oil cooling

Driven method

Integrated connection

Start way

Soft VSD Start

VSD inverter

INOVANCE / HOLIP / VEICHI

Exhaust Temp.

< ambient temp. +8 degrees

Oil content

<2ppm

Noise

72±3 dB(A)

Power

380VAC/3ph/0~200Hz

Motor power

90kw/90hp

Dimension

2800*1750*1900mm

Weight

2800kg

Lubrication Style: Oil-less
Cooling System: Air Cooling
Power Source: AC Power
Cylinder Position: Horizontal
Structure Type: Closed Type
Installation Type: Stationary Type
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 Sales 120 HP 90 Kw Two Stage Frequency Conversion Integrated Screw Air Compressor   air compressor lowesChina Best Sales 120 HP 90 Kw Two Stage Frequency Conversion Integrated Screw Air Compressor   air compressor lowes
editor by CX 2023-06-05

China Custom 10HP-20HP Permanent Magnet Frequency Conversion Rotary Screw Air Compressor with Great quality

Product Description

HangZhou CZPT Marine Equipment Co., Ltd. covers an area of 24600 square meters, located in jiangyan Economic Development Zone, fumin CZPT Park, with comprehensive test bench and large lifting equipment test bench, is specialized in the production of Marine safety life-saving equipment enterprises.

The company has the leading technology, strict management, fine equipment, strictly by the China Classification Society CCSISO9001:2008 quality management system certification to ensure, the main production: Marine lifeboat/life raft landing gear, gravity inverted boom davit, free landing davit, gangway winch, lifeboat/rescue boat winch, Marine low, medium and high pressure air compressor and all types of fully enclosed/open lifeboat and rescue boat.

HangZhou CZPT Marine Equipment Co., Ltd. is the production of maritime rescue equipment professional enterprise, main products are the life boat winch, the rescue boat winch, free fall type lifeboat launching device, gravity pour davit arm type, single arm liferaft lowered device, single arm boat/raft hanger and cranes, electric, pneumatic) ladder winch and Marine air compressor and various kinds of form a complete set of lifeboat.

Corporate culture: To build the world heavy industry carrier

— Corporate philosophy

Enterprise tenet: synchronizing with the world and consumers

Enterprise vision: strict management, sustainable development and satisfactory service

Enterprise values: The pursuit of quality The pursuit of Haihao

Enterprise spirit: Honesty, diligence and earnest

Haihao ships are interwoven with glory and dream, hardships and challenges, and will continue to burst out brilliant brilliance in continuous development and struggle

Haihao Marine respects every employee’s hard work, creates a level playing field for employees, and gives full play to their potential

 

 

Q: What are the available shipping methods?

A: Port location: HangZhou or ZheJiang , China Shipping to: CZPT Shipping method: by sea, by air, by express Estimated delivery dates depend on specific order list, shipping service selected and receipt of cleared payment. Delivery time may vary.

 

Q: What payment methods are supported?

A: Payment: By T/T, Western Union, Money Gram for samples 100% with the order, for production,30% paid for deposit by before production arrangement, the balance to be paid before shipment. Negotiation is accepted.

 

Q: How to control the quality of CZPT Products?

A: Products Material: Strictly control the material used, make sure they can meet international requested standards, and maintain long working life.
Semi-finished products inspection: We examine the proudcts100% before finished. Such as Visual Inspection, Thread testing, Leak Testing, and so on.
Production line test: Our engineers will inspect machines and lines at fixed period.
Finished Product Inspection: We do the test according to ISO19879-2005, leakage test, proof test, re-use of components, burst test, cyclic endurance test, vibration test, etc.
QCTeam:A QC team with more than 10 professional and technical personnel. To ensure 100% products checking.

 

Q: How long is the product date of delivery probably?

A: The different product, as well as the diferent run quantity can affect the date of delivery, but in ordinary circumstances product date of delivery about 30 days. Most of products have stock, contact us anytime to get more information.

 

Q: How to Custom-made(OEM/ODM)?

A: If you have a new product drawing or a sample, please send to us, and we can custom-made the product as your required. We wllalso provide our professional advices of the products to make the design to be more realized & maximize the performance.

 

Q: How about the mini order quantity?

A: We don’t have strict requirments on most items, due to we have stock. More information can send us the enquiry list, we check and reply you. For custom-made, MoQ will be adviced due to the specific product.

After-sales Service: After-Sales
Warranty: After-Sales
Lubrication Style: Oil-less
Cooling System: Air Cooling
Power Source: AC Power
Cylinder Position: Angular
Samples:
US$ 5000/Piece
1 Piece(Min.Order)

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Request Sample

Customization:
Available

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air-compressor

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-injected

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.
air-compressor

Oil-free

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.

Single-stage

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.
air-compressor

Low-noise

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 Custom 10HP-20HP Permanent Magnet Frequency Conversion Rotary Screw Air Compressor   with Great qualityChina Custom 10HP-20HP Permanent Magnet Frequency Conversion Rotary Screw Air Compressor   with Great quality
editor by CX 2023-05-29

China best Energy Save Direct Driven 8 Bar 40HP Frequency Conversion Screw Air Compressor air compressor portable

Product Description

Energy Save Direct Driven 8 Bar 40hp Frequency Conversion Screw Air Compressor

Technical Parameters Of PM Variable speed screw air compressor:
 

Model WZS-40EVA
Air Flow/Working pressure 5.0m3/min @ 8bar
4.4m3/min @ 10bar
Cooling type of COMPRESSOR Air cooling
Cooling type of MOTOR Air cooling
Driven method Direct Driven
Start way Soft VSD Start
VSD inverter HOLIP / VEICHI
Exhaust Temp. < ambient temp. +8 degrees
Oil content <2ppm
Noise 68±2 dB(A)
Power 380VAC/3ph/0~200Hz
Motor power 30kw/40hp
Dimension 1380*850*1150mm
Weight 680kg

 

Model Power
(KW)
Pressure
(Bar)
Air flow
(m³/min)
Noise
dB(A)
Compression stages Outlet diameter
(Inch)
Dimension
(mm)
Weight
(kg)
L W H
WZS-15EVA 11 8 1.8 62±2 Single 1″ 1300 860 1030 380
10 1.6
WZS-20EVA 15 8 2.2 63±2 Single 1″ 1300 860 1030 480
10 2.0
WZS-30EVA 22 8 3.8 66±2 Single 1¼” 1380 850 1150 620
10 3.0
WZS-40EVA 30 8 5.0 68±2 Single 1¾” 1380 850 1150 680
10 4.4
WZS-50EVA 37 8 6.8 68±2 Single 1½” 1600 1000 1370 850
10 5.4
WZS-60EVA 45 8 8.0 68±2 Single 1½” 1600 1000 1370 880
10 6.8
WZS-75EVA 55 8 9.7 69±2 Single 2″ 1700 1270 1500 1350
10 8.6
WZS-100EVA 75 8 13.2 70±2 Single 2″ 2150 1300 1700 1650
10 11.6
WZS-125EVA 90 8 15.0 70±2 Single 2″ 2150 1100 1500 1950
10 14.6
WZS-150EVA 110 8 19.0 71±2 Single DN65 2550 1650 1850 2600
10 17.0
WZS-180EVA 132 8 23.0 72±2 Single DN65 2550 1650 1850 2880
10 20.0
WZS-200EVA 160 8 26.5 75±2 Single DN80 2950 1800 1850 3200
10 22.5

 

Before quotation:
1.Before quoting, what should users offer?
1).Discharge pressure (Bar, Mpa or Psi)
2).Air discharge/Air flow/Air capacity (m3/min or CFM)
3).Power supply (220/380V, 50/60Hz, 3Phase)

2.If I don’t know the pressure and air flow, what should I do?
1).Take the picture of nameplate, we will advise the suitable air compressor to you.
2).Tell us what industry you are, we can advise the suitable 1 (so as to air tank / air dryer / air filters).
 

High Efficiency PM Motor and Energy Saving
*With the high-performance permanent magnet material, PM motor won’t lose magnetism even under 120°c and can run for more than 15 years.
*No motor bearing: permanent magnet rotors is installed directly on the stretch out shaft of Male rotor. This structure doesn’t have the bearing and eliminates the motor bearing fault. 
*Comparing to normal variable speed motor, the permanent magnet synchronous motor performs with even better energy efficiency. Especially in the low-speed condition, it can still maintain a high motor efficiency.

SHIPPING
Delivery: time 5-25 working days after payment receipt confirmed(based on actual quantity)
packing:standard export packing. or customized packing as your
Professional: goods shipping forwarder.

FAQ
Q: OEM/ODM, or customers logo printed is available?
Yes, OEM/ODM, customers logo is welcomed.

Q:  Delivery date?
Usually 5-25 workdays after receiving deposit, specific delivery date based on order quantity

Q: what’s your payment terms?
Regularly doing 30% deposit and 70% balance by T/T, Western Union, Paypal, otherpayment terms also can be discussed based on our cooperation.

Q: How to control your quality?
We have professional QC team, control the quality during the mass production and inspectthe completely goods before shipping.

Q:  If we don’t have shipping forwarder in China, would you do this for us?
We can offer you best shipping line to ensure you can get the goods timely at best price.

Q: come to China before, can you be my guide in China?
We are happy to provide you orservice, such as booking ticket, pick up at the airport, booking hotel, accompany visiting market or factory

 

After-sales Service: Video Technical Support
Warranty: Unit 1 Year, Air End 2 Years
Lubrication Style: Oil-less
Cooling System: Air Cooling
Power Source: AC Power
Cylinder Position: Vertical
Customization:
Available

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air-compressor

The Air Compressor Is a Versatile Tool

The Air Compressor is one of the most versatile tools in any garage or workshop. It is easy to use and can perform a variety of tasks, from jackhammering to drilling. These machines are available in a wide variety of sizes and types, making it an excellent choice for a variety of situations. With a single motor, you no longer need separate motors for each tool. Its lightweight, compact design makes it easy to handle, and the single motor also reduces wear on parts.

Oil-injected

Oil-injected air compressors require a large amount of lubricant, which needs to be added to the sump regularly to maintain optimum performance. As there are many types of industrial fluids, a well-intentioned maintenance technician may add the wrong lubricant to the compressor. If this happens, the compressor will become incompatible with the lubricant, resulting in excessive carryover and the need to flush and replace downstream air treatment components.
Typically, the G 110-250 oil-injected rotary screw compressor from Atlas Copco provides reliable compressed air, preventing costly downtime. The G110-250 oil-injected rotary screw compressor is highly reliable and durable, enabling it to function in temperatures up to 46degC/115degF. Despite the oil-injected air compressor’s robust design, this unit requires very little on-site installation, and it features simple operation.
The primary advantage of oil-injected air compressors is the reduced cost of running. The cost of oil-free compressors is less than half of that of oil-injected ones, and it will require fewer maintenance costs in the long run. Moreover, the oil-free system is more environmentally friendly than oil-injected air compressors. But the drawbacks of oil-injected air compressors are substantial, too. It can contaminate finished goods and cause a significant financial risk for the manufacturer.
An oil-injected rotary screw air compressor offers several advantages over its counterpart. First, it features an innovative vertical design with variable-speed drive, allowing it to run more efficiently. Second, oil-injected air compressors reduce energy consumption by up to 50% compared to non-oil-injected air compressors. They also have a thermostatic valve, allowing them to maintain an optimum temperature. Thermostatically-regulated oil coolers allow the compressor to run more quietly.

Oil-free

What is an oil-free air compressor? The name refers to a type of air compressor that does not contain oil in the compressor chamber. Oil-free air compressors still use oil for various purposes, including lubricating the moving parts and managing waste heat. However, many people do not realize that their air compressor still requires oil for proper functioning. This article will explore why this type of air compressor is preferable for many users.
First of all, oil-free air technology has many benefits. For one, it reduces the energy cost involved in filtering air, and it minimizes leaks. Moreover, it also reduces the oil costs associated with compressor refills. And finally, it reduces the risks of contamination. Oil-free air technology is the future of compressed air. If you’re looking for an oil-free air compressor, here’s what to look for in your search.
Depending on the purpose of your air compressor, it may be beneficial to invest in an oil-free air compressor. Oil-lubricated air compressors are generally more durable than their oil-free counterparts, but they may cost twice as much. You should still consider the cost of ownership before purchasing an oil-free compressor. The oil-free models can be easier to transport, and they are more powerful. Moreover, they’re quieter than oil-lubed models.
An oil-free air compressor also means less maintenance, as it doesn’t need oil to work. This type of air compressors also features fewer moving parts, which means fewer places for problems to develop. All oil-free air compressors are manufactured to meet ISO Class 0 and 1 air purity standards. They also have less noise and vibration compared to their oil-based counterparts. So, why not choose an oil-free air compressor for your business?
air-compressor

Gasoline

When choosing a gas-powered air compressor, it’s important to consider the advantages of gasoline. This energy source can power a large air compressor without electricity. However, this type of air compressor lacks electrical hookup, so you’ll need to run an extension cord if you need to use it at a distance. However, gas compressors are able to function with just a gas tank. This makes them ideal for medium to heavy-duty industrial applications.
Another important consideration when choosing a gas air compressor is its size. Larger compressors are typically larger than portable ones and require more space. This makes them easier to transport and operate on the go. However, if you’re not sure which type of air compressor is best for you, consider the gas-powered versions. While they may be lighter, they don’t run as smoothly as their electric counterparts. Gasoline-powered compressors are not as portable as their electric counterparts and require proper maintenance.

Electricity

Electricity in an air compressor is not cheap. A 25 HP air compressor runs for ten hours each day, five days a week. The motor in these machines consumes 746 watts per hour. To find out how much electricity the equipment uses, multiply the wattage by the running time. For example, if the compressor runs for three hours, then it will use 1.9 kilowatt hours of electricity. To determine how much electricity an air compressor uses per day, you can calculate the kilowatt hours and multiply the number by the utility rate. Considering this, you can determine the cost of running your air compressor once per month.
The cost of operating an air compressor depends on the type of compressor. Electric air compressors are often silent and can run without any maintenance. These tools can be left unattended for up to four thousand hours before requiring repair. Electric air compressors require higher power for higher pressure, so you should plan accordingly. Whether or not you need a maintenance visit is up to you, but the benefit of not having to spend a fortune on repairs is priceless.
Although compressed air is not an energy-efficient source, its use in a variety of applications may save you money and kilowatts. Since an air compressor uses power when it is running, the cost is lower than the cost of operating a power tool. If you plan to use your air compressor for a long time, make sure that it is maintained properly. Proper care will save you money and power, and you may even be able to get an extended warranty if the compressor breaks down.
air-compressor

Variable frequency drive

The main purpose of a variable frequency drive (VFD) in an air compressor is to reduce energy consumption in the process of compression. A single motor drag system cannot adjust its speed continuously according to the weight of the load. By applying frequency control to the compressor, the power consumption can be reduced while maintaining the same pressure level. Therefore, a VFD is an excellent choice for compressors. Its benefits are numerous.
A VFD can also monitor the temperature of the motor and send error signals if the motor is running too hot or too cold. This eliminates the need for a separate sensor to monitor the oil pressure. These functions are useful not only in lowering energy consumption, but also in improving the performance of an application. Moreover, a VFD can monitor additional variables such as temperature and motor speed. Hence, it is a useful investment.
When using a VFD, it is crucial to choose the right motor. The speed of the compressor should be within the maximum starting limit of the motor. The air tank may be of any size, but a constant pressure limit is required to keep the VFD running within the service factor of the motor. In addition to a VFD, a master controller should also include a remote pressure set point and a PID card for a master controller. The transmitter should incorporate all useful data from the VFD, including the speed and the oil temperature. The VFD must be tested before it is integrated with the master control. It should be tested for min and max speed, temperature, and current within the expected range.
The use of a VFD in an air compressor has many benefits. One of the most notable is the reduction in power consumption. Fixed-speed compressors run on set points of six to seven bar. An extra bar of compression uses 7 percent of energy. This energy is wasted. A VFD-powered air compressor can also increase the life span of compressor parts. It is one of the best investments in your compressor. So, why wait any longer?

China best Energy Save Direct Driven 8 Bar 40HP Frequency Conversion Screw Air Compressor   air compressor portableChina best Energy Save Direct Driven 8 Bar 40HP Frequency Conversion Screw Air Compressor   air compressor portable
editor by CX 2023-05-15

China Kaishan permanent magnet frequency conversion twin screw air compressor BMVF energy saving machine laser cutting machine portable air compressor

Relevant Industries: Developing Substance Shops, Production Plant, Machinery Fix Shops, Foodstuff & Beverage Factory, Farms, Cafe, Retail, Foodstuff Shop, Printing Shops, Power & Mining, Other
Showroom Area: United States, Viet Nam, Indonesia, Thailand, Malaysia
Condition: New
Kind: Screw
Configuration: Stationary
Energy Source: AC Power
Lubrication Style: Lubricated
Mute: Indeed
Voltage: 220v/380v or personalized
Dimension(L*W*H): a thousand*670*1090mm
Weight: 250kg
Warranty: 1 12 months
Operating Strain: 7 bar, 6 bar, Other
Air capacity: 2.05-2.35m³/min
Equipment Test Report: Presented
Video outgoing-inspection: Provided
Marketing Type: Common Solution
Guarantee of core factors: 1 Year
Core Components: PLC, Force vessel, Other, Motor, Motor, Pump, Bearing
Gasoline Type: Air
Item Title: Screw Air Compressor
Right after-sale provider: On-line provider
Following Guarantee Service: Video clip specialized help, Online assistance, Spare areas
Port: HangZhou port

Specification

itemvalue
Applicable IndustriesBuilding Materials Shops, Manufacturing Plant, Equipment Fix Shops, Foodstuff & Beverage Factory, Farms, Restaurant, Retail, Foods Store, Printing Shops, Power & Mining, Other
Showroom SpotUnited States, Viet Nam, Indonesia, Thailand, Malaysia
ConditionNew
TypeScrew
ConfigurationStationary
Power SourceAC Electricity
Lubrication StyleLubricated
MuteYes
Place of OriginChina
ZHangZhoug
Brand IdentifyKaishan
Voltage220v/380v or customized
Dimension(L*W*H)1000*670*1090mm
Weight250kg
Warranty1 Calendar year
Working Stress7 bar, 6 bar, Other
Air potential2.05-2.35m³/min
Machinery Take a look at ReportProvided
Video outgoing-inspectionProvided
Marketing SortOrdinary Solution
Warranty of main elements1 Calendar year
Core ComponentsPLC, Pressure vessel, Other, Engine, Motor, Pump, Bearing
Gas VarietyAir
Brand TitleKaishan
Product NameScrew Air Compressor
Place of OriginChina
After-sale supportOnline services
After Warranty ServicesVideo technical assist, On the web assist, Spare elements
About us Programs FieldsKaishan compressor in planet Why Select us FAQQ1: Are you manufacturing facility or trade business?A1: We are manufacturing facility. And we have ourselves buying and selling business.Q2: What the precisely tackle of your factory?A2: Our company is positioned in JNo.9 Kaixuan Ave West,Economic Zone HangZhou, ZHangZhoug, ChinaQ3: Guarantee terms of your machine?A3: A single 12 months guarantee for the device and complex support in accordance to your wants. Q4: Will you offer some spare areas of the machines? A4: Indeed, of program. Q5: What about the voltage of products??Can they be tailored? A5: Yes, of program. The voltage can be custom-made according to your equirement.Q6: Which payment expression can you take? A6: thirty% T/T in innovative, 70% T/T in opposition to the B/L duplicate. Q7: How extended will you consider to prepare creation? A7: 380V 50HZ we can delivery the merchandise in 7-15 days.Other electricity or other shade we will shipping inside twenty five-thirty times. Q8: Can you accept OEM orders? A8: Of course, with professional layout staff, OEM orders are highly welcome. Q9: Which trade time period can you acknowledge? A9: Offered trade terms: FOB, CIF, CFR, EXW,CPT, and so forth. A lot more merchandise

How to Choose the Right Air Compressor

An air compressor uses pressurized air to power a variety of tools. They are most commonly used to power nailers and impact wrenches. Other popular uses for air compressors include paint sprayers and impact wrenches. While all air compressors have the same basic construction, their specialty differs. Ultimately, their differences come down to the amount of air they can push. Read on for information on each type of air compressor. These tools are great for many different purposes, and choosing the right air compressor depends on your specific needs.
air-compressor

Electric motor

While purchasing an electric motor for air compressor, compatibility is a key factor. Not all motors work with the same type of air compressor, so it’s important to check the manufacturer’s instructions before purchasing. By doing this, you can avoid wasting money on an incompatible motor. Another important consideration is speed. A motor’s speed is its rate of rotation, measured in revolutions per minute. It is critical that you purchase a motor with sufficient speed to meet the needs of your air compressor.
Typically, an electric motor for air compressor is 1.5 hp. It is ideal for use with medical equipment and metal-cutting machines. It also performs well under continuous operation and offers a high efficiency and energy-saving performance. Moreover, it features an attractive price, making it a good choice for a wide range of applications. If you are looking for a motor for an air compressor, look no further than a ZYS series.
A motor’s protection class indicates how the motor will operate. Protection classes are specified by the IEC 60034-5. These are stated with two digits and represent the protection against solid objects and water. For example, an IP23 rating means that the motor will be protected from solid objects, while IP54 means that it will protect from dust and water sprayed from all directions. It is vital to choose a motor with the correct protection class for your air compressor.
When choosing an electric motor, you should consider whether it’s compatible with the brand of air compressor. Some may be compatible, while others may require advanced electronics skills to repair. However, most air compressors are covered by warranty, so it’s important to check with the manufacturer if the warranty is still in effect before you spend a dime on a replacement. The motor should be replaced if it has failed to perform as designed.
air-compressor

Oil bath

Air compressors require proper lubrication to function efficiently. The piston must draw air with minimal friction. Depending on their design, air compressors can either be oil-lubricated or oil-free. The former uses oil to reduce piston friction, while the latter splashes it on the cylinder bearings and walls. Such air compressors are commonly known as oil-flooded air compressors. In order to keep their oil baths clean, they are recommended for use in locations with high dust levels.

Start/stop control

An air compressor can be controlled by a start/stop control. This type of control sends a signal to the main motor that activates the compressor when the demand for air falls below a preset limit. This control strategy is effective for smaller air compressors and can be useful for reducing energy costs. Start/stop control is most effective in applications where air pressure does not change frequently and where the compressor is not required to run continuously.
To troubleshoot this problem, you need to check the power supply of your compressor. To check the supply side, use a voltage monitor to determine if power is flowing to the compressor. Ensure that the power supply to the compressor is steady and stable at all times. If it fluctuates, the compressor may not start or stop as expected. If you cannot find the problem with the air compressor power supply, it may be time to replace it.
In addition to the start/stop control, you may want to purchase additional air receivers for your air compressor. These can increase the capacity of air stored and reduce the number of times it starts and stops. Another way to decrease the number of starts per hour is to add more air receivers. Then, you can adjust the control to match your requirements. You can also install a pressure gauge that monitors the compressor’s performance.
Start/stop control for air compressors can be complex, but the basic components are relatively easy to understand. One way to test them is to turn the compressor on or off. It is usually located on the exterior of the motor. If you’re unsure of the location of these components, check the capacitors and make sure that the air compressor is not running while you’re not using it. If it does, try to remove the capacitor.
Variable displacement control is another way to adjust the amount of air flowing into the compressor. By controlling the amount of air, the control can delay the use of additional compressors until more required air is available. In addition to this, the device can also monitor the energy used in the compressor. This control method can result in substantial energy savings. You can even save on the amount of electricity by using variable displacement control. It is essential for efficient compressed air systems.
air-compressor

Variable speed drive

A VFD, or variable frequency drive, is a type of electric motor that adjusts its speed to match the demand for air. It is an efficient way to reduce energy costs and improve system reliability. In fact, studies have shown that a 20% reduction in motor speed can save up to 50% of energy. In addition, a VFD can monitor additional variables such as compressor oil pressure and motor temperature. By eliminating manual checks, a VFD will improve the performance of the application and reduce operating costs.
In addition to reducing energy costs, variable-speed drives also increase productivity. A variable-speed air compressor reduces the risk of system leaks by 30 percent. It also reduces the risk of system leaks by reducing pressure in the system. Because of these advantages, many governments are promoting this technology in their industries. Many even offer incentives to help companies upgrade to variable-speed drives. Therefore, the variable-speed drive can benefit many air compressor installations.
One major benefit of a variable-speed drive is its ability to optimize energy use. Variable frequency drives are able to ramp up and down to match the demand for air. The goal is to optimize the pressure and flow in the system so that the best “dead band” occurs between forty percent and eighty percent of full load. A variable-speed compressor will also increase energy efficiency because of its programmability.
A variable-speed air compressor can also be used to control the amount of air that is compressed by the system. This feature adjusts the frequency of power supplied to the motor based on the demand. If the demand for air is low, the frequency of the motor will reduce to save energy. On the other hand, if there is an excess demand for air, the variable-speed compressor will increase its speed. In addition, this type of air compressor is more efficient than its fixed-speed counterpart.
A VFD has many benefits for compressed air systems. First, it helps stabilize the pressure in the pipe network, thereby reducing the power losses due to upstream pressure. It also helps reduce the power consumption caused by fluctuations in upward pressure. Its benefits are also far-reaching. And as long as the air pressure and air supply is properly sized, a VFD will help optimize the efficiency of compressed air systems.

China Kaishan permanent magnet frequency conversion twin screw air compressor BMVF energy saving machine laser cutting machine     portable air compressorChina Kaishan permanent magnet frequency conversion twin screw air compressor BMVF energy saving machine laser cutting machine     portable air compressor
editor by czh

China OEM Permanent Magnet Frequency Conversion Rotary Screw Air Compressor 22kw 30HP with Best Sales

Merchandise Description

———–Specification————-

———Firm profile—————

———–————OTHER Goods——————-

———Following Support—————–

———–————FAQ———–———-

Q1: Are you a manufacturing facility or trade business? 
A1: We are an integration of industry and trade.The manufacturing facility and intercontinental trade office are in the exact same place.

Q2 : What the actual handle of your manufacturing unit? 
A2: Xihu (West Lake) Dis. Industrial Park, HangZhou City, ZheJiang Province,China.

Q3: Warranty terms of your device? 
A3: eighteen months for the complete machine, 2 years for air end, specialized assist for lifestyle.

Q4: How prolonged is your shipping?
A4: 25-thirty days soon after obtaining your 30% down payment.

Q5: Phrases of payment?
A5: T/T and L/C at sight.

Q6: What is the MOQ?
A6: 1 Personal computer.

Q7: Can you accept OEM orders?
A7: Yes, with a professional design team, OEM orders are highly welcome.

Q8: Can you acknowledge color customize?
A8: Yes we can.

Q9: Will you provide some spare components of the air compressor? 
A9: Yes, of training course.

Q10 : What’s your factory’s production capacity?
A10: About 1000 models per month.Thank you.

———-Why choose us?———–

1.Trustworthiness.
Steady tests for several many years can guarantee the complete reliability of compressors. And we utilized Germany Schneider air compressor areas and Chinese CZPT brand accessories, this sort of as CZPT air end, Jiangtian motor, Inovance converter. We hope to provide the ideal solution for your company.

two.Vitality-conserving.
The CZPT screw air compressors are outstanding all-in-1 answers for tiny and medium workshops, with CZPT expense personal savings of thirty% – 35%. 

three.High efficiency 
When compared with other manufacturers in the manufacturing of common frequency conversion machines, our air compressor can conserve about 6%-7% strength.
In the air compressor lifestyle cycle, the whole fees are composed of the cost of purchase upkeep and strength. A frequency conversion handle program can minimize CZPT usage, therefore minimize the complete expense of air compressors.

four.New modify
Adopting the new notion of frequency conversion air compressor to achieve the greatest power-preserving result in this business.
Far more compact design and style, much more shut physique, much less sounds, low vibration, much more stable performance major the future direction of the air compressor, institution the market expectations to supply clients with the benefit of energy.

For more detailed information, you are welcome to contact me by email or Wechat & WhatsApp.

 

Varieties of Air Compressors

There are a lot of sorts of Air Compressors obtainable on the market. Discover which one particular is appropriate for your demands and what can make 1 better than another. Find out far more about Single-phase designs, Oil-free models, and Lower-noise models. This write-up will make clear these sorts and support you choose which 1 you require. You can also discover about Air Compressors that have single-stage compressors. If you are hunting for a substantial-high quality compressor, this write-up will assist you choose a device.
air-compressor

Air Compressors

Air compressors work by forcing atmospheric air by way of an inlet valve. As the piston moves down, it pulls atmospheric air into the chamber. As the piston rises, it forces the compressed air out of the cylinder by way of an exhaust valve. A single of the most widespread types of air compressor is the reciprocating kind. Another kind of compressor is a solitary-stage piston. These varieties of compressors compress air in a single stroke – equivalent to the complete rotation of the piston’s crankshaft.
These gadgets modify electrical or mechanical energy into pressurized air. When air is compressed, its volume decreases, rising its strain. Air compressors generally have a minimum pressure of 30 bars. The reduce stress band is the range of air strain. Most compressors are controlled individually, but community controls can be utilized to interconnect multiple compressors. This sort of controller will not operate for all types of compressors. There are other types of air compressors that can talk with each and every other.
Compressed air has several applications in all varieties of industries. In agriculture, it can power pneumatically powered material managing machines for irrigation and crop spraying. Dairy equipments also use compressed air. Compressors are also utilized in the pharmaceutical business for mixing tanks, packaging, and conveyor programs. Portable air compressors, which can be run by diesel gas, are usually utilized at distant drilling sites. Moveable air compressors are also commonly utilised in oil and gas. They can be utilised to remotely handle valves and set up reactor rods.
Whether or not you use an air compressor for agricultural reasons or in a producing location, there are some features to take into account when choosing an air compressor for your needs. A very good compressor will have a protection gadget. It will routinely shut off the enter air and output air when sufficient compressing has been achieved. These functions will aid your air compressor continue to be productive and safeguard your products. The basic safety system is an crucial characteristic of any air compressor to increase its all round efficiency.
Vane air compressors are the most typical kind. They are generally scaled-down and much less effective than reciprocating piston compressors, so you can use one of these for apps that are underneath a hundred horsepower. The vane air compressors have low compression ratios and substantial capacities, but they are typically minimal to minimal-power programs. Vane compressors are inclined to run sizzling, and they usually have a minimal compression ratio. It is crucial to decide on the proper oil viscosity for your compressor.
air-compressor

Single-phase designs

When evaluating one-phase air compressors, look for the time period “phases.” Multi-phase compressors use two levels and can handle much more capability and stress. 1 phase requires pressurizing air using a piston and a decrease-pressure cylinder. This compressed air is then moved to a storage tank. One-phase designs are inclined to be far more vitality-effective than their two-phase counterparts. But if you don’t need a large-strain cylinder, a single-phase air compressor can be the greatest selection.
Even though solitary-stage air compressors produce much less electrical power, they can generate ample air to electricity pneumatic tools and other pneumatic tools. These single-phase units are most helpful for smaller sized-scale home tasks and Do-it-yourself initiatives. For much more industrial purposes, a twin-phase product is the ideal decision. But if you’re in a hurry, a solitary-stage unit may possibly be sufficient. Eventually, it depends on what you prepare to do with the air compressor.
Solitary-phase air compressors attribute a single cylinder, 1 piston stroke for each and every revolution of pressurized air. One-stage compressors are typically smaller and much more compact, creating them a excellent selection for more compact work environments. Their cfm potential (cubic ft for every moment) is an crucial indicator of functioning potential. If you plan to use a number of pneumatic tools, you will possibly need to have a increased cfm product. Similarly, the horsepower of solitary-stage compressors suggests its working capability. 1 horsepower moves 550 lbs for every foot for each minute.
Multi-phase air compressors are generally far more costly and much more power-productive than single-stage models, but they can provide greater air movement costs. Even though they may possibly be more complicated, they can reduced general running costs. If you plan on using your air compressor for industrial or commercial use, a dual-phase product may well be the greatest option. Nevertheless, if you happen to be preparing to use the air compressor for mass generation, a one-phase product may possibly be the ideal decision.
Solitary-phase air compressors have the very same piston measurement and number of inlets, even though dual-phase designs have a scaled-down very first piston and a significantly more time 2nd piston. Each have a cooling tube in between the two pistons to lessen the air temperature ahead of the second round of compression. The single-stage design is usually little and moveable, whilst the double-stage air compressor is stationary. These compressors can equally be stationary and large.

Reduced-sound models

Regardless of its name, reduced-sounds models of air compressors are not all the same. The sounds amount of a compressor can be influenced by many aspects, like the energy supply and proximity to the machine. Reciprocal compressors are typically louder than electrical ones since of their several relocating components. By distinction, rotary-screw and scroll compressors have less transferring elements and are quieter.
The noise level of a gas-driven air compressor can be really high, generating it unsuitable for use indoors. To battle this dilemma, you can decide on an electrical product. The noise degree of a compressor is primarily triggered by motor friction. The cover of a piston is also a key issue in sound, as pistons with minimum covers will make a whole lot of sounds. Beforehand, oil was essential for a quiet compressor. However, this has altered thanks to the health care industry’s need for oil-free versions.
The CZPT EC28M Silent Air Compressor is one more design that features tranquil procedure. This air compressor makes 59dB of sound. This level is lower ample to allow you to carry on regular discussions even though it cycles. In addition, this compressor has an industrial oil-cost-free pump and a 2.8 Amp immediate-generate induction motor. These two features make it a fantastic choice for companies.
Low-sound models of air compressors are accessible for the building market. Even so, these compressors are not necessarily lower-quality, which is why you need to consider the sounds level of your air tool before getting one. The professionals at CZPT can advise the lower-sounds designs for your specific application and place. Sound can distract people who function in close proximity to the air compressor. That is why several firms now opt for these types.
air-compressor

Oil-totally free versions

A amount of oil-free of charge versions of air compressors are obtainable, but what helps make them particular? Oil-free compressors do not incorporate oil, so they’re lubricated by grease alternatively. They are a very good choice if you are operating with a small compressor and do not want to chance harmful it. On the other hand, oil-cost-free models do make substantial quantities of heat, which can damage the compressor. Larger strain can grind the compressor against itself, or even warp it.
A few phrases of knowledge can assist you decide on the greatest oil-cost-free air compressor for your demands. For instance, a compressor’s horsepower is a measurement of how powerful the motor is. Larger horsepower indicates a increased PSI or ACFM. You can also use the ACFM to assess the two. Scroll engineering is a modern day air compression program that makes use of a stationary and cell spiral. This lowers the volume of air in the compressor by directing it to the center.
Acquiring an oil-free air compressor isn’t going to have to be a complicated activity, although. A great distributor can suggest you on what kind of oil-free of charge air compressor is right for you. This way, you can save income and get pleasure from peace of mind although using your air compressor. And, of training course, the best way to get a fantastic offer on an air compressor is to communicate to a distributor who is educated about the merchandise available.
An oil-totally free air compressor is a wonderful selection for firms that are delicate to the contamination of air. For illustration, in the pharmaceutical and meals business, a minuscule oil could spoil a product or even harm creation tools. Oil-free of charge air compressors typically have reduced maintenance costs than oil-flooded designs because there are less shifting components. Simply because of this, oilless air compressors require much less maintenance and could nonetheless want to be replaced at times.
A couple of advantages of an oil-free air compressor above an oil-lubricated one incorporate lower sounds ranges. Oil-free air compressors are likely to be much less noisy and run much more quietly than oil-injected ones, but you should still cautiously weigh the execs and downsides before generating a determination. Also, consider how much you use your air compressor prior to deciding on a product. The professionals outweigh the negatives. In the finish, you are going to be glad you selected an oil-free air compressor.

China OEM Permanent Magnet Frequency Conversion Rotary Screw Air Compressor 22kw 30HP     with Best SalesChina OEM Permanent Magnet Frequency Conversion Rotary Screw Air Compressor 22kw 30HP     with Best Sales