Aluminum Drum Jet Diffuser | Adjustable Air Supply Diffuser

Q1: What is a drum diffuser and where is it typically used? A: A drum diffuser, also known as a drum jet diffuser or drum louver diffuser, is an adjustable air supply outlet designed for long-throw air distribution in large spaces. It is commonly used in airports, exhibition halls, industrial plants, shopping malls, and sports arenas.Q2: Can the drum diffuser be installed on both ceiling and wall surfaces? A: Yes. GFIHVAC’s drum diffusers can be mounted horizontally or vertically without affecting the airflow performance, providing great flexibility for HVAC designers and installers.Q3: How is the airflow direction adjusted? A: The drum body rotates vertically within a ±30° range, and the internal guide vanes can be adjusted to fine-tune airflow direction, ensuring proper distribution of cold or warm air as needed.Q4: Is it necessary to install a damper with the drum diffuser? A: While an optional volume control damper can be installed at the diffuser throat, it’s often recommended to place the damper in the branch duct to avoid noise due to the high airflow volume.Q5: What are the standard sizes available? A: GFIHVAC offers a range of standard sizes including 300×150, 475×150, 625×150, 500×250, 650×250, 750×250, 900×250, and 900×350 mm. Custom sizes can be provided upon request.Q6: What materials and finishes are available? A: The diffuser is made from high-quality extruded aluminum alloy, with standard finishes in RAL9016 (white) or RAL9010, and custom colors available upon request.Q7: Is the drum diffuser suitable for both heating and cooling applications? A: Yes. The adjustable drum and vanes make it ideal for both heating and cooling modes—directing warm air downward in winter and cool air upward in summer for effective air distribution.