Cold air gun is a portable cold air source widely used in mechanical drying or cooling processes. It uses compressed air to lower the air temperature and produce a low-temperature airflow, making it ideal for small area cooling applications. Designed for easy installation and maintenance, it features a flexible universal tube that delivers cold air precisely to the required location. This device is suitable for continuous and stable operation in demanding industrial environments. Equipped with a built-in control valve, it allows adjustment of both airflow volume and output temperature as needed. Color: as shown Material: plastic + metal Working Principle: The cold air gun operates by directing compressed air into a vortex tube at high speed, causing rapid rotation of the air flow. During this process, the outer layer of air heats up while the inner core cools down. As the air moves toward one end, part of it reverses direction along the center of the vortex, creating a cold air stream with a temperature reduction of 25°C to 45°C below the inlet temperature, while hot air is expelled separately at temperatures up to 110°C, forming an efficient cooling source. Package Contents: 1 x Vortex tube with joint and universal tube Note: The package includes only the items listed above. Other products are not included. Due to lighting effects and differences in display screens, the color of the item in the image may vary slightly from the actual product. Measurement tolerances may vary by ±1-3 cm.