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An air compressor is an equipment that converts power, e.g.; (Using an electric motor, diesel, or gasoline, among others) into potential energy in compressed air. The process forces air into a unit or further reduces the volume of the air through a process called compression, whereby the pressure on the air is increased and decreased in volume. This compressed air can then be used in various fields of operation in industries and companies.
Key Components of an Air Compressor:
Motor: The motor is what powers the compressor pump.
Pump: Compresses the air.
Reservoir/tank: Used for holding the compressed air. The tank is usually designed and constructed in a way that can store a large amount of compressed air as required by the plant.
Pressure Switch: Control the pressure inside the tank by periodically connecting and disconnecting the compressor.
Intake valve: Enables air intake into the compressor&#;s chamber where it is compressed by the subsequent stages.
Discharge valve: This opens the tank to release compressed air into the surrounding environment.
2. What Are Applications Of Air Compressors?
Preservation companies such as supermarkets use air compressors in refrigeration systems for Food & Beverage preservation.
Here are more applications:
Aerospace Air Compressors
In aerospace applications, air compressors have some important functions that enable them to operate in various systems and processes. Pneumatic, particularly air compressor elements, are imperative to aircraft pressurization systems. They work to ensure that outside air pressure is well controlled and provides a comfortable and breathable environment in the interior of the aircraft cabin, particularly when the aircraft is at very high altitudes where atmospheric pressure is quite low.
Air compressors are used in aircraft in the emergency systems which supply auxiliary power in case of an engine breakdown and other calamities.
Automotive Air Compressors
Automotive air compressors serve various purposes in vehicles. They are used for tire inflation and the functioning of pneumatic equipment. Automotive air compressors drive many pneumatic instruments found in car repair and servicing, which include impact socket wrenches, air sockets, pneumatic sanders, and aerial paint sprayers.
Compressors are used on many automobiles as a part of the air conditioning systems within the car. They release refrigerant gas and reduce its volume, raising the temperature and pressure before it cools the car&#;s cabin. Compression systems used in the automotive industry serve the important purpose of regulating cabin temperature, especially during summer seasons.
Chemical & Petrochemical Air Compressors
The chemical and petrochemical plants, including control valves and instruments such as pneumatic instruments, analytical instruments, and so on, require clean, moisture-free, and oil-free compressed air. Filtration systems used in reciprocating compressors make it the most preferred system used in supplying instrument air.
Hydrogen is used as a reactant in various chemical processes and is manufactured by converting natural gas into hydrogen. Air compressors are used to compress the hydrogen-rich gas to be used for other processes or be transported in vehicles.
Dental Air Compressors
Some dental air compressors have suction systems for removing additional fluids and dirt around the patient&#;s mouth. That makes dental operations seamless by creating a better view and clean area. In dental labs, air compressors are used for applying a fine finish on dental appliances, removing debris from the molds, and operating tools for contouring dental appliances for patients.
Electronic Air Compressors
Electronic air compressors incorporate electronic controls and monitoring systems for enhanced performance and efficiency. In situations like manufacturing industries, electronic air compressors can easily be installed in line with other equipment since they are vital in matching the right air pressure and flow rates.
In industries like electronics manufacturing or medical equipment manufacturing, where air quality & pressure play a vital role, the use of electronic air compressors helps in achieving excellent control.
Laboratory Air Compressors
Laboratory air compressors supply high-pressure clean air to analytical instruments like the gas chromatograph mass spectrometer, atomic absorption spectrometer, etc. In many instances, these instruments receive air pressure that needs to be standardized and constant for the measurement results to be accurate.
Plastics Industry Air Compressors
The plastics industry involves many processes ranging from the manufacturing to the processing of plastic material. Air compressors are often used in all these processes. Air compressors help generate vacuum pressure applied on the thermoforming of plastics over molds. They also provide torque for pneumatic actuators, which trim the additional material and blow air to release the parts from the molds.
Textile Air Compressors
Textile air compressors have significant importance in the textile industry. Pressure or compressed air is used in spinning and weaving machines to clean fibers and remove dust that might affect the quality of yarns.
The major functions of compressed air are involved with steaming, drying, and ironing to create an appealing appearance and feel as well as the finished texture of textiles. This causes the elimination of wrinkles, moisture, and dirt on the surfaces of various fabrics of rugs.
CNC Machining Shop Air Compressors
Air compressors used in CNC machining shops are vital in serving various functions in the manufacturing business world. Several pneumatic tools are common in CNC machining shops operated by air compressors. These tools include drills, grinders, sanders, and impact wrenches. These tools are used during construction to cut and shape materials in various ways.
They are applied in the operation of pneumatic tools for the movement of materials handling appliances, including lifts, conveyors, and robot arms. These systems also enable the transport of raw materials and the final products throughout the flow of the machining cycle.
3. What Are The Most Common Air Compressor Features?
Air compressors come with various features designed to suit different applications and user preferences:
Tank size: The tank size determines how much compressed air the compressor can store before needing to recharge. Larger tanks are suitable for tasks requiring continuous or high-volume airflow.
Motor power: The motor power, expressed in horsepower (HP) or watts, is the maximum compressor&#;s compression capacity. Typically, greater horsepower or wattage capability refers to stronger capacity.
Pressure rating: This measures the maximum pressure that the compressor can develop.
4. What Are The Different Types Of Air Compressors?
Common types of air compressors are highlighted below:
Positive displacement compressors: In these compressors, air is confined within a chamber. The volume of the chamber is mechanically reduced to compress the air. This compression mechanism results in a direct increase in air pressure.
Dynamic displacement compressors: These compressors work under the principle that the velocity of air is increased dynamically, and the energy of velocity is turned directly into pressure. They are also referred to as turbo compressors or simply turbo machines.
Scroll compressors: These compressors use helical screw-like tools to compress air. It is suitable in situations where the noise level is low and compact construction is required.
Rotary vane compressors: Rotary vane compressors use a vane with blades that press air against a housing. The compressor is compact and less noisy.
Rotary screw air compressors: These compressors consist of two helical screws. One screw features internal threads, and the other has external threads. They are suitable for industrial use.
Centrifugal compressors: These compressors are based on a rotor impeller, which blows air, intensifies it, and afterward slows it down. That process transforms the velocity energy into pressure energy.
Reciprocating air compressors: These are rotary compressors that work by employing one or more pistons mechanically connected to a crankshaft to compress air.
Oilless compressors: These compressors utilize other fluids or substances or treatments instead of oil to minimize the abrasion between various surfaces instead of oil.
Single-stage air compressors: These are an example of the reciprocating compressor which compresses air within one stage. Single-stage units do not have many parts and are easy to construct and maintain as compared to multi-stage units. This often leads to a lower cost and less complex management.
Two-stage air compressors: Two-stage compressors work differently from single-stage compressors, which compress air in one step, while two-stage compressors compress air in two steps.
Gas compressors: These compressors are designed for different industries, including natural gas transmission, chemical processing, petrochemicals, and oil and gas.
High-pressure air compressors: These are professional machines used for supplying compressed air for breathing besides ensuring that clean air is available in confined spaces or complicated environments.
5. How Does A Compressor Work?
People use an air compressor in air conditioning systems, refrigeration units, and industrial processes for cooling.
The compressor first takes in air or refrigerant. This gas is taken by an intake valve or an intake port into the compressor. When in the compressor, the gas undergoes a process where it is compressed by reducing its volume.
In cases of compression, high-pressure gas is expelled from the system through an outlet valve or port of the compressor. The expelled air is ready for use in different capacity applications, such as cooling for a refrigerator or actuating pneumatic tools.
Sometimes, the air is also compressed. When this process occurs, the gas gets hotter. It is, therefore, a common feature for most compressor designs to incorporate additional means of cooling, such as a compressor&#;s cooling fins or radiator.
The cycle continues to repeat further to ensure a consistent supply of pressure as required and to provide a constant stream of compressed gaseous output.
The cycle continues when the compressed gas is in use or the pressure level goes down to the optimum level, where the compressor must pull in more of the gas to continue the cycle.
6. Which Is the Best Air Compressor?
There is no definitive answer to which air compressor is the best because it depends on the individual&#;s needs and requirements. Factors to consider include:
Usage: First of all, contemplate the tasks that will require using the compressor. Is it for home remodeling projects, professional decoration, or for commercial and industrial purposes?
Portability: Are you looking for a portable compressor for job sites or a fixed compressor for workshops?
Power source: The types of air compressors are classified depending on the type of power source. They range from electric air and gasoline air compressors to diesel air compressors. Indeed, you can choose a compressor that uses any of these sources based on availability and convenience.
Tank size: The tank size defines the amount of available compressed air in a compressor. Large tanks support constant use, implying that they will require less refill than the small tanks.
7. How Are Air Compressors Made?
Air compressors are large and complicated systems. They are produced through a variety of manufacturing operations. The following overview is a general procedure on how air compressors are manufactured:
Design phase: Manufacturers begin the designing process with engineers and designers coming up with specific product details.
Material selection: Next, the manufacturer procures the right material. The material could be steel, alloy, aluminum, and cast iron, among others.
Component fabrication: Manufacturers fabricate various components of the air compressor separately. These include the compressor pump, its motor, tanks or reservoirs, valves, pistons, cylinders, crankshafts, and any other component needed. They can also opt to purchase the accessories needed. Manufacturers use processes like casting, machining, forging, welding, and computer numerical control machining to manufacture these components.
Assembly equipment: Once all parts are ready, the manufacturing team then integrates them into the final system. That is mainly a manual process that may entail highly skilled operators who precisely align and fasten the components in the required locations. Assemblers must be as accurate as possible to help make the functioning of the machine more efficient.
Testing: After that, the air compressor goes through a test. Professionals confirm whether it is working accordingly and meets the quality requirements. These tests may include testing the efficiency of the compressor to operate under different loads, detecting and sealing off leaks, checking on pressure levels, and certifying different safety aspects.
Finishing: When an air compressor is qualified, it goes through certain surface treatment processes as required. That may involve hot stamping, painting, laminating, coating, die cutting, or paper and tile mounting to make it have an appealing appearance, protected from corrosion, or to make it have a longer life span.
Packaging and shipping: The manufacturer then boxes the end products properly as per the orders the company had received. It can also be packed in a sticky box if you want. The right packaging guarantees safe product delivery.
8. Where Are Air Compressors Produce Base In China?
China remains one of the world&#;s largest centers of industrial production. Some of the prominent areas known for air compressor production include:
Shanghai
Shanghai has emerged as a leading industrial hub for manufacturing. It has many factories of air compressor manufacturers for the local and export markets.
Taizhou, Zhejiang
It is evident that Taizhou in Zhejiang Province is among the leading locations in China that focus on air compressor manufacturing. Many factories and industrial plants are located in the city carrying out the manufacture of various types of portable air compressor units for different applications. Taizhou has established itself as a major player in the supply of air compressors to both domestic and international markets.
Linyi, Shandong
Another city that needs no introduction for manufacturing is Linyi in Shandong Province. It is also a vital hub for air compressor manufacturing. It is home to many factories and industrial establishments.
Guangzhou, Guangdong
Guangdong province is one of the industrial giants of China. Cities in this province, including Guangzhou and Shenzhen, are where air compressors are manufactured.
9. How Do I Choose The Right Air Compressor?
Selecting an appropriate air compressor depends on many factors. It mainly depends on the air requirements and the intended application. These steps should help you:
Determine your requirements: First of all, give a thought to the tasks that you want your air compressor to accomplish. That will help you know the capacity your equipment should have.
Air tool requirements: Also, check the air requirements of the tools you will use with the compressor. The airflow rate is measured in CFM, and pressure in PSI. Ensure that the specific compressor you opt for is capable of meeting or promoting these levels.
Lowest ownership cost: Ownership cost is an essential factor to consider when deciding to acquire an air compressor. Besides its price, also consider maintenance costs, repairs, energy costs, etc. Search for models with high energy efficiency, depicted under the Energy Efficiency Rating (EER) or the Seasonal Energy Efficiency Ratio (SEER).
10. Tips For Choosing the Best Air Compressors For Your Business?
Use the tips below to make a decision:
Check the functionality: Ensure it is working properly and can meet your business needs. Can the compressor provide enough air to meet the needs of the tools being used and the processes being carried out?
Ask about the Psi And Cfm: PSI (Pounds per Square Inch) measures the air pressure the compressor supplies to the pneumatic Air Tools. The air pressure is what powers pneumatic tools and equipment. The compressor&#;s PSI rating should exceed what the tool you will be using requires. Standard air tools work under pressures between 70 and 150 PSI.
Datasheets: The use of data sheets is very effective, especially when you are evaluating which type of air compressor to choose for your business. Consider the following parameters: airflow (in cubic feet per minute or CFM), horsepower (HP), usage cycle, and voltage to match the machine&#;s characteristics with your business requirements.
Choose the correct electrical phase: To do this, we must match the correct electrical phase to the air compressor to avoid any compatibility issues that can come with using an incorrect phase.
Select correct compressor parts: When it comes to compressor parts, there is seemingly nothing more critical than choosing the right one that will ensure the reliability, efficiency, and longevity of the unit. Choose a motor- electric or an engine &#; gas or diesel depending on the horsepower of the unit to appropriately drive the compressor.
Select a pressure switch with the capacity to set the compressor&#;s cut-in and the cut-out pressures to the required pressure range.
Safety Data Sheets (SDS): Safety data sheets (SDS) are crucial documents that provide you with knowledge concerning the dangers posed by chemicals. SDSs are intended to provide you with the details of the chemical, its risks, methods of use, and ways of controlling possible dangers in case of an emergency.
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Competitive quotes: Once you have narrowed down the requirements and the type of air compressor that will suffice your business needs, go out and enquire with different suppliers or manufacturers for the quotation. This way, you get an overall snapshot of the market in terms of pricing and the offerings that are available.
Reliability and quality: The reliability and quality of an air compressor are critical factors that you must consider when selecting the right compressor. Confirm whether the brand and model you are purchasing are generally reliable and long-lasting.
Installations: Consider the size of the available space where you intend to install your compressor. Consider whether your space is enough for the compressor size, ventilation requirements, and other equipment, such as air dryers or filtration systems.
A reliable supplier: Choose a supplier with good product quality, friendly customer support, and a proper attitude toward after-sale communication. A good supplier will assist you in choosing the right type of compressor that fits your needs.
Warranty and service: Service and warranty are vital factors you must consider. When seeking guarantees, consider those that protect parts and offer security against their defects. Check the authorized service centers or the service providers for your models and the technical support they offer.
11. Where To Buy Air Compressor In China?
Here are some of the main certificates required to import excavators from China:
When looking to buy an air compressor in China through e-commerce platforms and sourcing agents, you have several options to consider:
11.1. alibaba.com
11.2. made-in-china.com
11.3. dhgate.com
11.4. globalsources.com
11.5. aliexpress.com
11.6. chinabrands.com
11.7. Huntersourcing -China sourcing agent.
12. Top 10 Air Compressor Suppliers and Manufacturers in China
China is home to the best air compressor manufacturers. If you are looking for suppliers in China, here is a short list of air compressor manufacturers you might want to consider:
12.1. Shanghai Screw Compressor Co., Ltd.
Shanghai Screw Compressor Co., Ltd. is comprehensive and effective in quality control. It specializes in the manufacturing of top-quality and fully tested compressors using sophisticated production methods and quality testing instruments. Details about this air compressor manufacturer are available at https://www.scrcompressor.com/en/.
12.2. Denair Energy Saving Technology (Shanghai) PLC
Denair Energy Saving Technology (Shanghai) PLC is a recognizable company among respected portable air compressor manufacturers in China. More details about its products are at https://www.denair.net/.
12.3 Zhejiang Universal Machinery Co., Ltd.
Zhejiang Universal Machinery Co., Ltd is another leading China-based compressor manufacturer. The company is situated in Zhejiang Province and mainly deals with the manufacture of machinery. Read more about this manufacturer at https://www.univpower.com/.
12.4. Shandong Sollant Machinery Manufacturing Co., Ltd.
Another company that can be considered a key participant among screw air compressor manufacturers is the Shandong Sollant Machinery Manufacturing Co. Products you can buy from this air compressor factory are portable air compressors, piston air compressors, rotary screw air compressors, and others. Visit https://www.shanghaisollant.com/ for more details.
12.5. Guangdong Baldor-Tech Co., Ltd..
Guangdong Baldor-Tech Co., Ltd. is among the renowned AC compressor manufacturers in China. It is an air compressor spare parts supplier you can trust. It sells its products through http://www.xdsjd.com/en/.
12.6. Xiamen East Asia Machinery Industrial Co., Ltd
Xiamen East Asia Machinery Industrial Co., Ltd. is one of the industrial air compressor manufacturers you can trust. EAMI ranks high among compressor suppliers that deal in a product range, including rotary screw air compressors, piston air compressors, and air treatment products. Buyers can view its products at https://www.jaguarcompressors.com/.
12.7. Guangdong Baldor-tech Co., Ltd.
Guangdong Baldor-tech Co., Ltd. is another compressor manufacturing company that deserves a mention. The company focuses on manufacturing rotary screw air compressors, piston compressors, as well as oil-free air compressors since it serves a wide range of industries and segments. More details about this air compressor supplier are available at https://aircompressorfactory.com/
12.8
Dream (Shanghai) Compressor Co., Ltd
.
Dream (Shanghai) Compressor Co., Ltd. is among the leading air conditioner compressor manufacturers in Shanghai. The factory specializes in manufacturing and distributing air compressors and related equipment. From rotary screw compressors to piston air compressors and oil-less air compressors, this air compressor factory has you covered. Visit https://www.dreamcompressor.com/ for more details.
12.9 Zhejiang Meizhoubao Industrial&Commercial Co., Ltd.
The Zhejiang Meizhoubao Industrial&Commercial Co., Ltd. is another prominent name among renowned industrial compressor manufacturers. It is a prominent player among the leading high-pressure compressor manufacturers in Asia. They provide details about their products, prices, and shipping at https://www.chinamzb.com/.
12.10 Shanghai Honest Compressor Co. Ltd
Shanghai Honest Compressor Co. Ltd. manufactures products such as rotary screw air compressors, piston air compressors, portable air compressors, and air treatment products. It provides quality products and services, is inventive in its general approaches, and focuses on the domestic and international markets. It gives more details about its products at http://www.osg-china.com/en/.
13. Air Compressor FAQ
13.1 What is a screw compressor?
A screw compressor, or a rotary screw compressor, is a specific type of gas compressor that employs rotary displacement as a working principle. It uses two whirling helical screws, called rotors, to compress the air that has gone through the main compressor.
13.2 What is a rotary air compressor?
A rotary air compressor is the kind of compressor that utilizes the rotary elements during the compression of the air. While reciprocating compressors incorporate the piston for compressing the air, rotary compressors facilitate compression by use of rotors or screws.
13.3 What is a scroll air compressor?
A scroll air compressor is a type of air compressor that is characterized by its high energy efficiency and low noise level when in operation. It consists of two spiral-shaped interleaved rotating components. One is longitudinal and remains stationary, while the second one (or L1 and L2) circles about the first one without rotating.
13.4 What is a Gas booster compressor?
A gas booster compressor is a unique type of compressor that mainly needs to double the pressure of a gas at a higher initial pressure.
13.5 How does a screw air compressor work?
A screw air compressor, referred to as a rotary screw air compressor, makes use of two meshing screws threaded helically, referred to as rotors, to compress the air.
13.6 What Is Cfm And What Does Cfm Mean?
CFM, as an acronym, means Cubic Feet per Minute. It is used as a standard means of measuring the volume of air that circulates in a minute.
13.7 What are the industrial uses of compressors?
Some common industrial uses of compressors include:
Pneumatic tools: Compressors help in operating such pneumatic tools as drills, nails, shears, spray guns, and many others in industries such as manufacturing, construction, and automobiles, among others.
Manufacturing processes: It is used in manufacturing operations for material handling, production line applications, pneumatic transportation, or material packaging among others.
HVAC systems: Air compressor is commonly used in HVAC systems which are used for controlling and maintaining temperature, humidity level, and air quality in commercial and industrial spaces.
13.8 What Size Air Compressor Do I Need?
Various tools have varying demands of CFM rates depending on their operational standards and efficiency. When selecting an air compressor, you must consider several factors, which are the type of applications you are going to put it through, the psi that will be required, and the volume of air that you will necessitate in cubic feet per minute (CFM).
13.9 Which kind of oil is used in a screw compressor, and why?
Screw compressors use synthetic oil. The reason for this is that synthetic oil is appropriate for the high temperature and pressure conditions experienced within screw compressor processes. Screw compressors also create considerable heat when working because of the compressing effect.
13.10 Do air compressors have a power rating?
Indeed, air compressors have a power rating different from what is found in most electric devices. Just because one power rating of an air compressor may be higher than another does not necessarily mean that it is more powerful. The rating shows the energy evaluation of the compressor and the electrical code compatibility to let you know if you can operate the compressor.
13.11 What is a single-stage air compressor, and how does it work?
Single-stage compression means that the compression of air to the required pressure takes only one stage in the system. In a single-stage air compressor air is taken into the cylinder of the compressor through the intake valve in the suction process.
13.12 Is a two-stage air compressor better than a single-stage?
It depends on the variety of your demands and the type of application you require for an air compressor. A single-stage compressor is commonly used for all those operations for which moderate pressure of air up to 150 pounds per square inch is quite enough for pneumatic tools, tire inflation, etc.
Two-stage compressors have two pistons: the first stage of the compressor includes a large low-pressure piston primarily to compress air at first, and the second stage involves a small high pressure to further compress the air at the required pressure. They are effective at producing greater air pressures (usually above 150 PSI) and are best suited for use in applications within continuous or high usage constants.
13.13 Why should I choose a gas-powered air compressor?
Compared to electric air compressors, the gas air compressor piston does not need to be connected to an electric outlet. They can be quite helpful in construction areas, farming areas, and anyone who wants a portable service area.
13.14 Why does the air compressor blow out water?
An air compressor blows out water because the compressed air contains some moisture that often condenses. The humidity in the air drawn into the intake of the compressor can be utilized. When held in this state, the pressure at this state will force the temperature to rise hence making the moisture vapor form liquid water.
13.15 Why air compressor not working
If your air compressor is not working, there could be several potential reasons for the issue:
Power supply: Check to confirm whether the correct power outlet is connected and switched &#;On&#; to the compressor. In case you find that a specific circuit is affected, check the circuit breaker or the fuse box.
Pressure Switch: The switch determines whether the compressor is on or off depending on the airflow pressure in the tank. High pressure switch may also be another issue that may fail to allow the compressor to start in case it is faulty or wrongly adjusted.
Motor: The next step is to look at the motor to see if there is any evidence of damage in the component. Also, check that the motor has not overheated.
Why Choose Huntersourcing As Your Air Compressor Sourcing Agent?
The secret to importing compressors from China is to identify a reliable sourcing agent like Huntersourcing that prides itself in extensive market research to provide you with professional consulting services. We also do product research to unearth the best compressors in the market.
Here&#;s why you should choose Huntersourcing as your trusted air compressor sourcing agent:
Expertise and experience: At Huntersourcing, we pride ourselves on an efficient team of professionals with rich experience in sourcing air compressors from China.
Stringent supplier selection process: The quality of air compressors you use affects your business operations. That is why we must always perform a factory audit to ascertain that the company we are sourcing from observes strict quality control. We also ask for a sample to ensure we are partnering with the best supplier.
Tailored solutions: Our supply chain management solutions entail services tailored to your needs. For instance, if you are on a budget, our team will undertake price negotiation to ensure that you are getting the best quality at the lowest prices. For newbies, Huntersourcing provides customs clearance to ensure smooth buying and shipping.
Transparent communication: We are transparent in our sourcing processes. We do inform our clients at every stage of the process. You will always be informed on every step of shipping & logistics.
Cost-effective solutions: When offering our services, we factor in how affordable they are to the business. And so, we use the network access, and negotiated prices for air compressing equipment needed to offer you the most pleasing prices.
Quality assurance: To ensure the product quality meets the expected standards, we herein perform quality checks from the time of procurement up to the time when the products are ready to be shipped. We usually follow up throughout the development stages to ensure that the design meets your needs.
Ready to revolutionize your air compressor procurement process? Welcome to a new way to do business.
Contact Huntersourcing now. Consider doing business with us and change how you source your products and services
How to choose the right air compressor:
First, you need to know the size of air compressor you need. The following tips should be noticed.
1. Get to know the air requirement of your tool.
As we all know, some tools consume more air comparing to others, for example, the pneumatic nail-guns, staplers that consume less air, on the contrary, the air grinders and sprayers need much air. So we need to know the air requirements or cubic feet per minute of the tools, whatever you are using or planning to use them. Generally, you can find a usage rating for CFM consumption at a recommended PSI on the tools or within the enclosed owner&#;s manual provided by the tool manufacturer.
a. One tool at a time. If you are alone to use the compressor, you have to know the required largest CFM of the tool you may use, and then choose the right size accordingly.
b. More than one tools at a time. You need to add up all the CFM of all the tools you may use at the same time, and then determine the size of compressors you need accordingly.
c. If your compressor performs well below or above 100PSI, you should to know that the PSI and CFM is contradictory to each other, which means you drop in PSI usage, you get a slightly higher CFM, and vice versa.
2. Refer to the delivered or free CFM rating instead of the displaced CFM rating.
Actually, the displaced CFM and delivered or free CFM are different. The displaced CFM is the perfect standard rating for compressors that can not exist 100% in real world. This CFM comes out by a compressor working in a prefect environment at a total efficiency. As a result, you should decide the right size compressor by referring to the delivered CFM.
3. Choose the right compressors
The correct size number should be your decided CFM and add 20% more. Then what you have to do is pick out the compressors with the matched delivered CFM.
Second, you have to understand what the horsepower rating is.
As a matter of fact, horsepower is not the only component in the processes of producing air by air compressors, and the compressor pump has worked together with horsepower to produce the needed air. You have to remember that bigger the horsepower does not necessarily mean more air produce. But horsepower works together with a quality pump that can produce adequate CFM you need.
However, you should be aware of the differences between the horsepower from manufacturers and the real horsepower of the compressor you would like to buy. Most of the time, the horsepower provided by manufacturers are not the real horsepower of a compressor. It is the peek horsepower, which is the horsepower when the machine is getting start. Generally, the start-up horsepower is 1.5 to 3 times stronger than the normal running horsepower. So it is the real horsepower instead of the peek horsepower that we should care about.
Third, provide the right voltage to run the compressor.
The voltage is optional to different sorts of compressors. For most of the time, the electric compressors can run properly with a standard 110-volt circuit. However, the electric wheelbarrow compressors is flexible to run with the power varied from 110-volt to 220-volt, which is depending on available power supply for the job. On the other hand, if no other optional gas-powered compressors are available and more air is required, usually the 220-volt motor would be your only choice. Therefore, when you want to buy a stationary shop compressor, you have to know the power supply at your disposal (208v, 230v, or 460v), and the power-phase (single-phase or three-phase).
Sometimes, the power supply failed or is far away, but we do not recommend using a generator to power your compressor for substitute. As generators may damage the compressors if sudden fluctuation in power occur, and it is considered improper usage of compressor and will void any warranty on it. However, we do recommend using a gas-powered compressor when power supply is unavailable, and applied the suggested length and gauge of power cord involved in users manual. You better choose longer (and larger diameter) hose instead of a longer cord. It is commonly known that most electric tools have initial start-up surge which mean more powers are required to start-up than to run, and the disparity of start-up power and normal run power can be as large as 3 times. This also means the amp-draw is 3 times as much.
Forth, use the right mode to run compressor, Stop-start or constant-run.
Stop-start mode means that pressures switch control the pressure level of high and low in the tank by automatically turning on and off the compressor. When the pressure level is lower than designed PSI in the tank, it will auto-turn on. Conversely, it will auto-turn off when the pressure level higher than the designed PSI. This operation is suitable for smaller electric, direct-drive compressors and some smaller wheelbarrow electric compressors.
Constant-run mode means to run the pump continuously without stopping the motor. A pilot unloaded-valve is provided to level the designated pressure in the tank. The valve will open to atmosphere when the tank reaches the high-pressure setting so as to keep the compressor running. The valve will closed when the PSI is come to normal and then repeat the work of direct air back into the tank. This mode is more often applied in such tools that heavy and constant flow of air without interruption is required, for instance, a grinder, or sander, or a sprayer.
Generally, constant-run mode is usually used for a compressor that stops and starts more than 20 times per hour so as to protect the compressor from excessive overheat. As we all know, the frequent stop and star of compressor within a short time will produce a huge amount of heat which is more than the motor stays running all the time. Therefore, we should choose the right mode of compressor depending on the actual situation.
Fifth, buy the most suitable compressor, oil-less or oil-lubricated.
Almost all the reciprocating compressors are provided with a series of pistons that will pump up and down inside their individual cylinder for the purpose of compressing the air to a higher pressure. The rub can create friction and heat. So measures have to be taken to prolong the life of the pump, such as lubricate with oil and have a Teflon-type lining in the cylinder.
Oil-less compressors are widely used for lighter use applications. They are able to run off-level without worry. But the advantages and disadvantages are half and half. They are of low-maintenance, but tend to wear much quicker due to more heat created, and the repair costs would be extensive.
Oil-lubricated compressors are capable of keeping the pump running cooler and lasting much longer if they are well maintained. It is of vital importance to make sure the compressor sits level so as to ensure that the lubricated oil is effective and reach all cylinders. If run off-level, it can do heavy damage to the cylinders over a short period of time. And it is considered improper usage and difficult to claim warranty.
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