Round Ceiling Diffuser For HVAC System
The Round Ceiling Diffuser is a crucial terminal device in the HVAC (Heating, Ventilation, and Air - Conditioning) system. It is mainly used for uniformly distributing air flow, improving the efficiency of indoor air circulation and comfort. Its circular design combines aesthetics and functionality, and it is suitable for various scenarios such as commercial, office, and residential applications.
Product Specification
The circular design guarantees a uniform radial discharge in supply air applications.
They can be used both for supply and return applications.
They are suitable for using in rooms with heights up to 4m (A,B,C designs), 6m (D design), 8M (H design)
Material: They are made of aluminum sheet.
Accessories: Damper (butterfly damper in plastic or steel manual control; radial-shape damper screw control.)
Mounting: Screw type.
Finishing: White powder coating Ral9016, Ral9010, or customized color. Anodized.
Selection Tables
| Size(mm) | RCD-VA, VC ∅D(mm) |
RCD-VA, VC ∅A(mm) |
RCD-VB ∅A(mm) |
Air volume (m3/h) |
Throw Max. (m) |
|---|---|---|---|---|---|
| 150 | 145 | 200 | 595x595 | 135 | 0.8 |
| 200 | 195 | 250 | 595x595 | 240 | 1.3 |
| 250 | 245 | 300 | 595x595 | 360 | 1.55 |
| 300 | 295 | 350 | 595x595 | 500 | 1.8 |
| 350 | 345 | 400 | 595x595 | 666 | 2.2 |
| 400 | 395 | 450 | 595x595 | 810 | 2.4 |
| 450 | 445 | 500 | 595x595 | 1050 | 2.7 |
| 500 | 495 | 600 | 595x595 | 1215 | 2.9 |
| Size(mm) | RCD-VD ∅D(mm) |
RCD-VD ∅A(mm) |
Air volume (m3/h) |
Throw Max. (m) |
|---|---|---|---|---|
| 150 | 145 | 300 | 148 | 0.9 |
| 200 | 195 | 395 | 260 | 1.5 |
| 250 | 245 | 445 | 395 | 1.8 |
| 300 | 295 | 495 | 560 | 2.3 |
| 350 | 345 | 545 | 750 | 2.8 |
| Size(mm) | RCD-VH ∅D(mm) |
RCD-VH ∅A(mm) |
Air volume (m3/h) |
Throw Max. (m) |
|---|---|---|---|---|
| 150 | 145 | 325 | 160 | 1.4 |
| 200 | 195 | 430 | 285 | 2.3 |
| 250 | 245 | 530 | 445 | 2.7 |
| 300 | 295 | 640 | 640 | 3.1 |
| 350 | 345 | 720 | 865 | 3.6 |
Data were chosen when the air velocity is 2.5m/s and the velocity at throw distance is 0.25m/s.
FAQs of PIR Foam Pre-insulated Aluminum Duct
Do PIR pre-insulated (PI) ducts require additional insulation after installation?
No. Unlike traditional steel ducts (which need separate insulation layers like fiberglass), PIR pre-insulated panels are factory-insulated with integrated facing. This eliminates the need for secondary insulation work, saving time and labor.
In which scenarios is PIR pre - insulated duct sheet suitable?
It is widely used in commercial buildings such as offices, shopping malls, and hotels, as well as in residential complexes, industrial facilities, healthcare and food processing facilities, and cold storage and refrigeration systems.
How is PIR pre - insulated duct sheet packaged?
-It is usually packaged in plastic film or cartons, with 10 sheets per package.
How to maintain PIR pre-insulated (PI) ducts?
| Item | Square Ceiling Diffuser |
| Warranty | 1 Year |
| After-Sales Services | Online Technical Support |
| Model | SCD-VA/VB/VC |
| Application | Commercial Building/ Office Building |
| Material | Aluminum |
| Usage | Supply Air/Return Air |
| Accessories | Air Damper/ Plenum Box |
| Thickness | 0.6/0.7/0.8/0.9/1.0 mm |
| Standard Color | White Ral 9016/9010/Customized |
| Place of Origin | China Xiamen |
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