Compressor

An air compressor is a must-have tool for any workshop, garage or industrial setting. It is a versatile piece of equipment that can be used to power a wide range of pneumatic tools, such as paint sprayers, impact wrenches, and sanders. 

Identifying the appropriate air compressor for your application can be challenging. Different types of compressors have different features and benefits. Certain compressors are designed for particular tasks while others are multi-purpose and can accommodate multiple uses.

This guide provides an overview of the different types of air compressors, their functions, and the industries they are commonly used in.

By the end of this guide, we're confident you will have all the information you need to select an air compressor for your workshop or construction site.

Let's dive in.

What is an air compressor?

Simply put, an air compressor is a machine that compresses air using an electric motor, diesel or gasoline engine, etc. and stores it in a tank or cylinder. This compressed air can then be used for a variety of purposes, from inflating tires and powering tools to running air-powered machinery in factories and large industrial settings.

So how does it work? 

At its most basic, an air compressor has a motor that powers a piston or impeller, compressing the air and sending it into a storage tank. When the tank reaches a certain pressure, the compressor turns off and the stored air can be released through a valve for use.

One thing to keep in mind is that most air compressors require regular maintenance to keep them running smoothly. This can include things like changing the oil, replacing filters, and checking for leaks.

Understanding air pressure: What does PSI rating mean?

A compressor with a higher PSI rating can offer increased air storage capacity by compressing more air into the same size tank, allowing for longer operation of air tools. It is important to be aware that the PSI rating is not the only factor to consider when looking at air storage capacity. Additional factors such as tank size and compressor flow rate should be taken into account.

1. Low-pressure compressors: These compressors typically deliver pressures of 150 psi (pounds per square inch) or less and are used for tasks like powering professional paint spraying systems, airbrushing, and to power dental tools and some medical devices.
2. Medium-pressure compressors: These compressors typically deliver pressures between 150 and 1000 psi; they can be used for tasks such as powering pneumatic tools and inflating tires.
3. High-pressure compressors: These compressors are designed to deliver up to 6,000 psi and are used for tasks such as providing air for breathing apparatus, powering pneumatic control systems, or performing gas injection in oil and gas reservoirs.

It's important to note that these classifications are not set in stone and can vary depending on the manufacturer and intended use of the compressor. Additionally, compressors can also be classified by their methods of operation, such as reciprocating compressors, rotary screw compressors, and centrifugal compressors. We'll discuss these specific types later on.