The blades are made of ABS engineering plastic with anti-condensation performance. The blades are detachable and allow adjustment of the air discharge direction. When supplying hot air in winter, the air outlet direction of each blade is symmetrical, enabling two airflows to converge for a longer air supply distance. Multiple airflow modes are available for users to adjust and select.
Description
The specific number of blades can be separately calculated by our company according to customer requirements.
Available specifications: 300×8, 400×16, 500×24, 600×24, 600×48, 625×54, 825×72.
Plenum box is provided as an optional accessory.
Schematic Diagram of SH-VDWA Square Plate Swirl Diffuser

| Model | □A | ΦA | □B | ΦB | □C | ΦC | ΦD | H |
| 300x8 | 300 | 300 | 270 | 270 | 200 | 200 | 15 | 50 |
| 400x16 | 400 | 400 | 370 | 370 | 250 | 250 | 200 | 50 |
| 500x24 | 500 | 500 | 470 | 470 | 250 | 250 | 200 | 50 |
| 600x24 | 600 | 600 | 565 | 565 | 300 | 300 | 250 | 60 |
| 600x48 | 600 | 600 | 565 | 565 | 350 | 350 | 300 | 80 |
| 625x54 | 625 | 625 | 580 | 580 | 350 | 350 | 300 | 100 |
| 825x72 | 825 | 825 | 775 | 775 | 450 | 450 | 400 | 120 |
Technical Performance Table
| Specification | Air Volume (m³/h) | Total Pressure Loss (Pa) | Max Vertical Throw (m) | Diffusion Radius (m) | Noise Level dB (A) |
| 300×8 | 138 | 25 | 1.4 | 1.5 | 32 |
| 184 | 43 | 1.9 | 2 | 40 | |
| 230 | 67 | 2.4 | 2.5 | 43 | |
| 276 | 91 | 2.8 | 2.9 | 48 | |
| 365 | 165 | 3.8 | 3.9 | 56 | |
| 400×16 | 275 | 25 | 1.9 | 2 | 32 |
| 365 | 43 | 2.5 | 2.6 | 40 | |
| 460 | 67 | 3.2 | 3.3 | 43 | |
| 550 | 91 | 3.8 | 3.9 | 48 | |
| 735 | 165 | 5.1 | 5.2 | 56 | |
| 500×24 | 410 | 25 | 2.4 | 2.5 | 32 |
| 550 | 43 | 3.2 | 3.3 | 40 | |
| 690 | 67 | 4.0 | 4.2 | 43 | |
| 820 | 91 | 4.8 | 4.9 | 45 | |
| 1100 | 165 | 6.4 | 6.6 | 56 | |
| 600×24 | 570 | 25 | 2.8 | 3 | 32 |
| 770 | 43 | 3.6 | 3.8 | 40 | |
| 960 | 67 | 4.5 | 4 | 43 | |
| 1140 | 91 | 5.6 | 5.9 | 45 | |
| 1500 | 165 | 7.2 | 7.8 | 56 | |
| 600×48 | 820 | 25 | 3.9 | 4.1 | 32 |
| 1100 | 43 | 5.0 | 5.1 | 40 | |
| 1380 | 67 | 6.2 | 6.3 | 43 | |
| 1650 | 91 | 7.5 | 7.6 | 45 | |
| 2200 | 165 | 9.4 | 9.6 | 56 | |
| 953 | 25 | 3.5 | 3.7 | 37 | |
| 625×54 | 1335 | 43 | 4.1 | 4.3 | 41 |
| 1800 | 67 | 6.7 | 7.4 | 45 | |
| 1907 | 91 | 7.9 | 8.3 | 47 | |
| 2300 | 129 | 10.2 | 10.5 | 52 | |
| 1200 | 15 | 3.6 | 3.8 | 31 | |
| 825×72 | 1800 | 32 | 5.2 | 5.6 | 39 |
| 2400 | 58 | 7.1 | 7.5 | 46 | |
| 300 | 90 | 8.8 | 9.1 | 48 | |
| 3597 | 129 | 10.7 | 11.2 | 55 | |
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Note: 1. The maximum throw refers to the vertical distance at a terminal air velocity of 0.5 m/s for isothermal airflow, when every two blades are arranged symmetrically under hot air supply condition. 2. The diffusion radius is the horizontal distance from the air outlet center at a terminal air velocity of 0.5 m/s. 3. Other sizes and blade combinations can also be customized and manufactured. |
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Flat plate swirl diffuser is used for cold and hot air supply. It features an attractive appearance with airflow in coanda (horizontal discharge) pattern.
