Pressure is the force exerted in a given area. For a best portable air compressor, the pressure varies depends on the amount of compressed air and the force it exerted. It is the tons that the compressor produces and it is also known as the swept volume or displacement which can be expressed in cubic feet per minute (FCM), cubic feet per hour (CFH) cubic meters per hour and etc. the actual useful volume is less than the value showed for the capacity.
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- Top 5 Best Portable Air Compressor Comparison Table
- Portable Air Compressor Reviews
- Porter-Cable PCFP02003 3.5-Gallon 135 Psi Best Air Compressor
- DeWalt D55140 1-Gallon 135 Psi Max Trim Compressor
- Makita MAC700 Big Bore 2.0 HP Air Compressor
- Senco PC1010 1-Horsepower Peak, 1/2 hp running 1-Gallon Compressor
- Ingersoll Rand P1IU-A9 Hand Carry Twinstack 2-HP Compressor
- How Pick The Best Air Compressor Guide
What are the differences between pressure and capacity?
As explained, pressure is the amount of air or the force exerted by the air in an area while the capacity is the displacement of air.
How to choose the right pressure and capacity for your job?
First you must know the required pressure and capacity for your task add 1.5 bars to the minimum required pressure and make sure that the capacity is within the range or higher. If you are looking for a replacement and you think that your old equipment is sufficient then you can buy the same pressure and capacity as your old compressor. If you have a reciprocating compressor but you need a higher capacity then take into account the future expansion, don’t bother with the pressure since it is much higher than the actual pressure needed and buy a compressor that has the right capacity. But if you have a rotary screw and you need more capacity, you can just purchase another compressor with the same capacity and use it as a backup for the other.
The Scroll Air Compressor
It uses two interleaving scrolls to pump, compress or pressurize air. It features a better liquid handling; the axial and radial compliance allow the scroll to separate that protects from liquid damage, greater efficiency and high reliability. Pros of this includes, low maintenance which means that the product is durable, it is very quiet so you won’t worry about waking up everyone if you work at night, the scroll compressor is very small so it is portable and oil free. The cons include low capacity, it is expensive than other compressor available, when the product fails there is a big chance that you have to purchase a new one and the compressed air gets very hot. It is mostly applicable in air conditioning equipment, automobile supercharger and as a vacuum pump.
Top 5 Best Portable Air Compressor Comparison Table
PORTER-CABLE PCFP02003 3.5-Gallon 135 PSI
4.5 out of 5 stars
540+ customer reviews
DEWALT D55140 1-Gallon 135 PSI
4.4 out of 5 stars
200+ customer reviews
Makita MAC700 Big Bore 2.0 HP
4.7 out of 5 stars
700+ customer reviews
Senco PC1010 1-Horsepower Peak
4.4 out of 5 stars
470+ customer reviews
Ingersoll Rand P1IU-A9 2-HP Compressor
4.2 out of 5 stars
70+ customer reviews
What do you think is the basis for a compressor to be considered as portable?
A 10 pound pancake compressor and a 60 pounds wheelbarrow compressor are both considered as portable. Portability may rang form 10 to 75 pounds but also depends and the design. Some portable good air compressors have handle bars for easy transportation and also include wheels. Most portable ones nowadays has less noise than others. The advantage in having it, is that in case of emergency for example changing a flat tire or repairing damages and repairing materials and other equipments. You don’t have to worry anymore about waking up somebody or damaging your ear drums because of the reduced in the noise it produces. The draw back of purchasing one is that it may not be applicable for heavy equipments and other apparatus.
Summing this whole review up, before purchasing the best compressor you must first analyze the required minimum and maximum for your convenience. Some of the products may be a little expensive but it will surely guarantee your money’s worth.
Portable Air Compressor Reviews
How Pick The Best Air Compressor Guide
Before purchasing an air compressor, there are things that you should take into account first. You must know the requirements needed and be familiar with its functions and applications. Don’t worry! I will help you select the best air compressor for you following my guide below and top air compressor reviews. There are different that are available in the market. There are basic 2 types, the reciprocating and the rotary screw compressor.
It is a positive displacement compressor that uses pistons drive by crankshaft to deliver gases at a high pressure. It increases the pressure of the air while decreasing its volume with the use of the piston within the cylinder. During compression, if one side only is used then it is known as single acting. If both of the sides, top and underside are operates then it is known as double acting. The versatility of the piston compressors has no limits. It compresses fluids with small alterations and it is the only design capable of compressing air or gas to high pressure.Reciprocating compressors are proficient in giving large pressure ratios but the only drawback is that the mass handling capacity is limited or small. The pressure ranges depends on the type of the reciprocating compressor which will be further explained below. The same applies to the capacity of the compressor; it depends on the type of reciprocating compressor. Reciprocating applications are usually include oil refineries, gas pipelines, chemical plants, refrigerator plants and etc.
In a single stage reciprocating air compressor, a single cylinder is used to carry out the total compression. It completes this by a piston within a cylinder as the compressing and displacing element.It is fully functional and convenient to use. No need to worry, it is portable and is thermally protected. It is a quality product that can be utilized for housework but it is not applicable especially in large industrial work. A single stage compressor is generally utilized for pressure ranges from 50 psi to 150 psi depending on the model. The capacity ranges from 4.5 up to 65 CFM. Single stage air compressor is applicable for tire vulcanizing and retreading, spray painting, service station equipments, hydraulic pressure tanks, reservoir tanks and etc.
It consists of two or more cylinders. There is a low pressure (LP) cylinder which is always larger in diameter than the high pressure (HP) cylinder in the second stage. Atmospheric air enters the LP through inlet filters and valves to pass the HP through inter cooler and HP inlet valves.The two stage reciprocating compressor features a tank drain, discharge valve, high durability, high efficiency and precision engineered components for high reliability. It is designed for heavy machinery and industrial use, the only drawback is that this product would be expensive and out of the budget for other consumers.
The pressure ranges from 150 psi to 215 psi and has a capacity range of 7.75 CFM up to 55 CFM. The two stage reciprocating compressor applications include automotive service and body shops, fleet maintenance, machine shops, construction, wood working, dry cleaners, car washer and maintenance or repair shops and farms.When there are varying demand levels during a process, it is best to use a duplex compressor. It features an automatic duplexing; it is the alternation of compressors which depends on the compressed air required. It also has a totally enclosed belt guard. The duplex design decreases the electrical cost and prevents downtime but the drawback is that you need oil to function the compressor. The specifications of the duplex compressor include the maximum pressure of 175 psi, and it had the capacity range of 13.2 CFM up to 200 CFM. The duplex compressor is applicable where power does not allow a single larger compressor.
It is a positive displacement mechanism that uses a rotary type. They replaced piston compressors when large volumes of high pressure are needed. It is designed to meet the highest requirements that the modern work environment needs. Rotary screw compressors are highly energy efficient, quiet and reliable; the only drawback for this product is the price that comes with the amazing and great features it holds. The pressure can reach up to 217 psi and it has the capacity from 9 CFM up to 3044 CFM. It is usually applicable to construction sites and to power construction equipments.
Without the assistance of an oil seal, air is compressed entirely through the action of the screws. It features compact designs with direct coupling of drive and compressor block, low speed operation that ensures high durability and the air receiver is fully coated.
Pros for this product is that it is 100% oil free air but it is more expensive, the maintenance and repairing is more difficult and noisier than other best air compressor. The pressure ranges from 100 up to 150 psi and has the capacity range of 427 to 800 CFM. Applicable where entrained oil carry-over is not acceptable, instances like in medical research, hospitals, pharmaceuticals, food industry and semiconductor manufacturing.
To help in sealing and provide cooling sink for the gas charge, oil is injected in the compression cavities. Oil is removed after by the oil separator which produces clean compressed air. The small oil carry-over of the best portable air compressor helps in preventing rust inside the compressed air system and aid in running the machine smoothly. The pros of the Best Air Compressor include quiet operation, a high volume of air in a steady state, lower energy cost compared to the piston type and it is applicable in continuous operation. The drawback to this type is that, it is more expensive than other compressors, not suitable for long stand stills and it has oil carry-over. The pressure usually ranges from 100 psi up to 190 psi and has a capacity of 5.4 to 45.5 CFM. Mostly used for industrial purposes.