Product
Navajyothi Air Flow
Brand
NJ-Alu Slot (Grill) Diffuser
Application
Supply and return air distribution for HVAC ventilation and air-conditioning systems.
Product Description
The Aluminium Slot Diffuser (ASD) is a high-performance linear air distribution terminal designed for supply and return air applications in HVAC systems. Manufactured from premium-grade extruded aluminium alloy, it provides an elegant architectural appearance with excellent air distribution, making it ideal for offices, commercial buildings, hotels, hospitals, airports, and luxury interiors. The diffuser is available in 1 to 8 slots, with individually adjustable pattern controllers for precise airflow direction.
Description
- Frame and deflection blades are made of high quality extruded aluminum profiled construction with the advantages of corrosion resistance and rigidity.
- Air distribution can be changed vertically or horizontally by means of deflection blades without changing the air flow rate. These blades can be fully adjusted from face opening.
- Air flow rate can be adjusted by fixing hit and miss damper at the rear side of the diffuser. Damper blades are adjusted from the face opening.
- Dampers are designed in a unique way that it can be used as an equalizing grid.
- Positive alignment of adjacent sections can be made by using alignment strips.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | Aluminium Slot Diffuser (ASD) |
| Material | Extruded Aluminium profile |
| Construction | Aluminium extruded frame with removable pattern controllers |
| Frame Width | 20 mm (Standard) |
| Frame Thickness | 1.2–1.5 mm |
| Slot Width | 20 mm (Standard), 25 mm (Optional) |
| Number of Slots | 1 to 8 Slots |
| Air Pattern | Horizontal, Vertical or Angled (Adjustable) |
| Application | Supply Air / Return Air |
| Standard Length | 600 mm, 900 mm, 1200 mm, 1500 mm, 1800 mm, 2400 mm |
| Maximum Continuous Length | Up to 1830 mm (Longer lengths by joining sections) |
| Mounting | Ceiling / Wall |
| Plenum Box | GI Plenum Box (Optional) |
| Damper Option | Hit & Miss Damper (Black) |
| Pattern Controller | Adjustable Aluminium Aerofoil Blades (Black) |
| Finish | Powder Coated / Natural Anodized |
| Powder coated finish | RAL 9010 , other RAL colours shades |
Applications
- Commercial Office Buildings, Shopping Malls, Hotels & Resorts, Hospitals
- Airports, conference Rooms, Auditoriums, Residential Apartments
- Luxury Villas, Educational Institutions, Retail Showrooms, Corporate Offices
| No. of Slot | Duct Size | A (Neck) | B (Outs) | C (Height) |
|---|---|---|---|---|
| 1 | 50 | 40 | 80 | 42 |
| 2 | 90 | 80 | 120 | 42 |
| 3 | 125 | 115 | 155 | 42 |
| 4 | 160 | 155 | 195 | 42 |
| 5 | 200 | 190 | 230 | 42 |
| 6 | 240 | 230 | 270 | 42 |
| 7 | 275 | 270 | 310 | 42 |
| 8 | 310 | 305 | 345 | 42 |
| No. of Slot | Duct Size | A (Neck) | B (Outs) | C |
|---|---|---|---|---|
| 1 | 50 | 40 | 75 | 42 |
| 2 | 80 | 70 | 110 | 42 |
| 3 | 110 | 105 | 145 | 42 |
| 4 | 150 | 140 | 180 | 42 mm |
| 5 | 175 | 170 | 210 | 42 mm |
| 6 | 210 | 205 | 245 | 42 mm |
| 7 | 250 | 240 | 280 | 42 mm |
| 8 | 280 | 275 | 315 | 42 mm |
Curved type Slot Grills
T – Type slot grills
Performance Data Table slot 20 mm slot width
| No. of Slots | Airflow (CFM) | Face Velocity (m/s) | Pressure Drop (Pa) | Throw (m) | Noise Level (dB) |
|---|---|---|---|---|---|
| 1 | 52 | 2.6 | 3.6 | 6.5 | 17 |
| 75 | 3.8 | 5 | 14.2 | 19 | |
| 105 | 5.1 | 6 | 25.5 | 30 | |
| 130 | 6.4 | 7.2 | 39.2 | 36 | |
| 155 | 7.8 | 7.5 | 42.7 | 39 | |
| 180 | 9 | 8.6 | 60 | 42 | |
| 2 | 100 | 2.6 | 4.3 | 9.5 | 16 |
| 125 | 3.3 | 5.2 | 14.7 | 20 | |
| 155 | 4 | 6 | 20.6 | 29 | |
| 176 | 4.6 | 6.8 | 28.4 | 31 | |
| 200 | 5.2 | 7 | 36.5 | 34 | |
| 250 | 6.5 | 8 | 56.9 | 40 | |
| 3 | 130 | 2.1 | 4.1 | 8.4 | 15 |
| 150 | 2.5 | 5 | 11.8 | 18 | |
| 205 | 3.4 | 5.4 | 21.2 | 25 | |
| 225 | 3.8 | 6.3 | 26.5 | 30 | |
| 252 | 4.2 | 7.5 | 32.6 | 35 | |
| 300 | 5 | 8.5 | 42.7 | 38 | |
| 4 | 150 | 1.9 | 4.5 | 7.1 | 17 |
| 200 | 2.5 | 5.5 | 13.7 | 20 | |
| 253 | 3.2 | 6 | 19.4 | 25 | |
| 301 | 3.9 | 6.8 | 27.5 | 31 | |
| 350 | 4.4 | 8 | 37.3 | 35 | |
| 402 | 5.1 | 8.7 | 44.1 | 38 | |
| 5 | 300 | 3 | 6.4 | 18.6 | 24 |
| 355 | 3.5 | 6.7 | 27.5 | 29 | |
| 400 | 4 | 7.5 | 37.3 | 33 | |
| 452 | 4.6 | 8.5 | 41.7 | 34 | |
| 503 | 5.1 | 9 | 46.1 | 37 | |
| 6 | 302 | 2.5 | 6 | 14.7 | 21 |
| 350 | 2.9 | 6.5 | 16.2 | 24 | |
| 401 | 3.3 | 7.2 | 23 | 29 | |
| 450 | 3.8 | 7.5 | 31.4 | 30 | |
| 500 | 4.2 | 8.2 | 38.2 | 34 | |
| 601 | 5.1 | 9.1 | 47.1 | 41 | |
| 7 | 351 | 2.5 | 6 | 15.7 | 22 |
| 400 | 2.9 | 6.7 | 16.7 | 26 | |
| 453 | 3.3 | 7 | 22.8 | 29 | |
| 502 | 3.6 | 7.4 | 31.3 | 30 | |
| 600 | 4.3 | 8.5 | 40.4 | 37 | |
| 701 | 5.1 | 9.5 | 47.1 | 40 | |
| 8 | 400 | 2.5 | 6 | 16.2 | 21 |
| 450 | 2.8 | 6.5 | 16.7 | 26 | |
| 500 | 3.1 | 7 | 22.8 | 29 | |
| 603 | 3.7 | 7.5 | 31.8 | 32 | |
| 701 | 4.3 | 9 | 41.2 | 37 |
Performance Data Table for 25 mm slot width
| No. of Slot | Airflow (CFM) | Face Velocity (m/s) | Pressure Drop (Pa) | Throw (m) | Noise Level (dB) |
|---|---|---|---|---|---|
| 1 | 74 | 3 | 5.2 | 7.8 | 17 |
| 100 | 4 | 6.5 | 14.7 | 26 | |
| 126 | 6 | 7.5 | 24.5 | 29 | |
| 150 | 6.1 | 8.5 | 37.3 | 32 | |
| 175 | 7 | 9.5 | 39.2 | 37 | |
| 201 | 8.1 | 10.5 | 44.1 | 40 | |
| 2 | 125 | 2.5 | 5.5 | 9.8 | 17 |
| 150 | 3 | 6.5 | 12.7 | 18 | |
| 180 | 3.5 | 7.4 | 18.6 | 24 | |
| 200 | 4 | 7.5 | 20.6 | 28 | |
| 252 | 5 | 8.8 | 26.5 | 33 | |
| 301 | 6.1 | 10 | 38.4 | 39 | |
| 3 | 152 | 2 | 5 | 8.3 | 16 |
| 201 | 2.7 | 5.6 | 12.5 | 17 | |
| 225 | 3 | 6.9 | 19.1 | 21 | |
| 254 | 3.4 | 7.6 | 20.8 | 28 | |
| 304 | 4.1 | 8.7 | 26.7 | 32 | |
| 350 | 4.7 | 10 | 36.3 | 35 | |
| 402 | 5.5 | 10.5 | 40.7 | 40 | |
| 4 | 200 | 2 | 5.5 | 7.4 | 17 |
| 250 | 2.5 | 6.3 | 13.7 | 18 | |
| 300 | 3 | 7 | 18.6 | 21 | |
| 352 | 3.4 | 7.5 | 25.7 | 28 | |
| 400 | 4 | 8.5 | 28.9 | 31 | |
| 451 | 4.5 | 9.5 | 33.5 | 35 | |
| 500 | 4.9 | 10 | 41 | 37 | |
| 550 | 5.4 | 10.9 | 45.1 | 40 | |
| 5 | 351 | 2.8 | 7 | 21.1 | 23 |
| 402 | 3.2 | 7.4 | 26.5 | 27 | |
| 451 | 3.7 | 8.1 | 30.8 | 30 | |
| 500 | 4 | 8.8 | 35.8 | 34 | |
| 553 | 4.5 | 9.5 | 40.2 | 36 | |
| 603 | 4.9 | 10.7 | 43.6 | 38 | |
| 650 | 5.2 | 11.6 | 46.3 | 40 | |
| 6 | 350 | 2.3 | 6.9 | 14.7 | 17 |
| 400 | 2.7 | 7.5 | 17.9 | 20 | |
| 451 | 3 | 8 | 21.6 | 23 | |
| 500 | 3.3 | 8.6 | 28.9 | 28 | |
| 600 | 4 | 9 | 36.3 | 31 | |
| 700 | 4.7 | 10.5 | 41.7 | 36 | |
| 802 | 5.3 | 12 | 50.4 | 40 | |
| 7 | 400 | 2.3 | 7 | 14.7 | 17 |
| 451 | 2.6 | 7.7 | 19 | 22 | |
| 502 | 2.9 | 8 | 21.9 | 25 | |
| 601 | 3.4 | 9 | 30.8 | 28 | |
| 700 | 4 | 9.5 | 39.2 | 34 | |
| 805 | 4.6 | 11 | 43.6 | 37 | |
| 900 | 5.2 | 12 | 52.5 | 42 | |
| 8 | 505 | 2.5 | 7 | 17.7 | 19 |
| 605 | 3 | 8.5 | 30 | 27 | |
| 700 | 3.5 | 9.2 | 31.4 | 30 | |
| 800 | 4 | 10 | 40.2 | 36 | |
| 900 | 4.5 | 11.2 | 45.1 | 40 | |
| 1005 | 5 | 12.3 | 52 | 44 |