Different Types of Air Compressors

Air compressors have a variety of uses. Inflating your car tires is only one of their many functions. Along with inflation and compression uses, air compressors can power a host of different tools including nail guns, spray guns and wrenches. Generally, there are two types of compressors: piston-type compressors and compact compressors.

Type 1: Piston-type Compressors

Piston-type compressors are most powerful category of compressors. Two advantages they have over compact compressors are that they have larger motors and they have tanks attached to them to store compressed air. The motor in these compressors automatically balances the air pressure contained inside the tanks. If the air pressure inside a tank is low, the motor will fill the tank up. Once the tank reaches the proper limit, the motor will shut itself off. Within the category of piston-type compressors, there are two types: single- and dual-piston compressors.

Single-Piston Compressor

The "single-piston" compressor has one piston, which compresses and distributes air to its storage tanks. This compressor is used for moderate to light work, where the amount of pressure required is less than 150 pounds per square inch. You might find this type of compressor at a local bike shop or in someone's home.

Dual-Piston Compressor

As the name suggests, dual-piston compressors have two pistons. Like a single-piston air compressor, these pistons are used to deliver air into their storage tanks. They do this by doing what is called a "double tap": the first piston compresses the air into a check valve while the second piston compresses the air a second time before releasing it into the storage tank. This compressor is used for heavy-duty applications, where the work requires more than 150 psi.

Type 2: Compact Compressors

The compact compressor is almost specifically designed for home use and lighter application. It is small compared to its piston-pumping brethren and lacks a tank for added control and air volume. Yet, these junior compressors serve an important purpose. Compact compressors are the compressor of choice when powering caulk guns, glue guns and small spray guns, and inflating tires and sports balls. It also is far smaller than a piston-type compressor because it lacks an air tank.

Power Supply

Two sources typically power compressor motors: electricity and gas. By far, electrically powered compressors are the most common. They are easy to use and clean. Their only disadvantage is the need to have an accessible outlet. Gas-powered air compressors have no significant advantage over electric compressors other than the fact that they can be moved to areas without electricity. Confined or unventilated areas pose a health hazard when using them.

References

• Lowe's