By . Air Compressor. At Sunday, September 16th 2018, 02:46:11 AM.
A rotary vane air compressor uses a rotor and a number of blades in radial slots in the rotor. I do not fully understand how this works, but it has something to do with the rotor turning and the blades sliding in and out of their slots as they keep contact with the housing wall. This somehow creates decreasing volume.
Screw compressors consists of two helical rotors which are used in compressing external air to a set pressure, ensuring dry, clean, and compressed air. The find increasing application in segments such as chemicals and petrochemicals processing, food & beverages, metals & mining, automotive, power plants, and oil & gas where large volume of high pressure air is needed especially to drive machine tools.
One of the most important things that you need to pay attention to is the noise factor. Most of airbrush compressors are extremely loud, so you need strong nerves to withstand all that. More expensive and more sophisticated models do not have these problems, but the question is how much it's worth. You have to find a balance when it comes to your needs and budget.