Tekway an air spray gun, also known as an air paint sprayer or airbrush, is a tool used for applying paint or other coatings to surfaces. It operates by using compressed air to atomize the paint or coating and deliver it in a fine mist or spray onto the target surface. 

Here's a basic overview of how an air spray gun works:

1. Compressed Air Supply: The air spray gun requires a source of compressed air, typically from an air compressor or a dedicated air supply system.

2. Paint or Coating Supply: The paint or coating material is usually stored in a separate container, such as a paint cup or paint reservoir, which is attached to the spray gun.

3. Air and Material Mixing: When the compressed air is released through the spray gun, it creates a vacuum that draws the paint or coating material up into the gun. The air and material mix together inside the gun to create a fine spray.

4. Adjustable Controls: Air spray guns often have adjustable controls to regulate the airflow, paint flow, and spray pattern. These controls allow you to customize the spray pattern size, shape, and density according to your specific needs.

5. Trigger Operation: Air spray guns typically have a trigger that you squeeze to release the compressed air and paint simultaneously. By controlling the trigger, you can control the amount of paint being sprayed.

Air spray guns are commonly used in various industries, such as automotive refinishing, woodworking, metal fabrication, and general painting applications. They offer efficient and even coverage, making them suitable for large surface areas or intricate details.

When using an air spray gun, it's important to follow the manufacturer's instructions and safety guidelines to ensure proper operation and achieve the desired results.