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As we’ve touched on here, there are myriad uses for screw air compressor both in commercial and domestic environments. Within the category of air guns, there are several types, each of which is suitable for a different job. We’ve compiled a guide to all the major types of air compressor, how they work and how they differentiate from one another.

The most common types of regular screw air compressor are single and dual phase, both of which operate in the same fundamental way, only dual phase has one more step involved in the compression process. In a single phase compressor, there is one chamber and the air is compressed a single time; in a dual phase, there are two chambers and the air is put through compression twice.

Another way to compare variable frequency air compressor is to look at whether they use oil or not – there are oil-free and oil-based / lubricated compressors and both are suited to slightly different jobs. For the air to be drawn into the chamber safely and effectively, the piston needs to be in top working order. To work properly, the piston must be lubricated with oil.

Within an industrial or commercial setting, there are numerous uses for oil-based PM screw air compressor, including:

Vehicle painting and repairs

Sanding and woodwork

Creating snow banks in ski centres

Tools within dentistry and other medical environments

Pneumatic construction tools such as nail guns

Air cleaning tools such as blowguns

Scroll compressors are a type of piston compressor, and are also called reciprocating compressors. These are the most common type of two stage air compressor, due to affordability and general availability. But how does a reciprocating air compressor work? The piston system works by having a piston travel downwards, decreasing the pressure inside its internal cylinder through the creation of a vacuum. The sudden change in pressure causes the door of the cylinder to be forced open, and draw air in. When the piston travels up again, the air is forced out of the cylinder at a much higher pressure point. This continues in a reciprocating, ‘scroll’ pattern, hence its name.

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