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Promoted item:2.5 HP 21 Gal 125 PSI Cast Iron Vertical Air Compressor

2.5 HP 21 Gal 125 PSI Cast Iron Vertical Air Compressor

    • 364 watching
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    • 110 sold
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  • New
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  • 7d 21h 17m
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  • US $182.45
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  • Quantity 10Available
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About Compressor

A compressor is basically a device with the capacity to compress a gas, such as air. This compression is achieved by allowing the gas to flow into a chamber and then reducing its volume, thus, subjecting the gas to tremendous pressure. Compressors are classified into different types depending on the method used to compress the gas. Rotary screw compressors use a pair of rotating helical screws, between which the gas is trapped, the space gradually being reduced as the screws are turned. These compressors generate a pressure greater than 1200 pounds per square inch (psi). Piston compressors use pistons moved by a crankshaft to create the compression action, offering more than 5000 psi. Rotary sliding vane compressors use a rotor-stator combination to create compression through each revolution of the rotor. Centrifugal compressors have rapidly rotating impellers which shoot the air out, the speed of which is suddenly reduced, inducing air compression. Similarly, axial flow compressors also blow the air into narrowing passages to achieve compression of the gas. Most compressors work either on electricity or on fuel, with some being stationary and some portable. Compressors are used to power many pneumatic devices such as drill, saws, ratchets, hammers, and nailers. In the medical field, they are used to store purified gases, such as oxygen, in smaller containers. Compressors are even used in refrigerators and air-conditioners. In scuba diving, the air cylinders contain compressed air to ensure that air is available for longer periods. Pneumatic tires in various vehicles are filled using compressed air. Car brakes and systems such as automatic windows and windscreen wipers use compressors.