Brand
Navajyothi Air Flow
Model
NJ-Alu Disc Valves
Application
Supply and return air distribution for HVAC ventilation and air-conditioning systems.
Product Description
The Aluminium Disc Valve (ADV) is a precision-engineered adjustable air valve designed for supply, return, and exhaust air applications in HVAC and ventilation systems. Manufactured from high-quality aluminium, the disc valve provides smooth airflow regulation through an adjustable central disc, making it ideal for residential, commercial, healthcare, hospitality, and industrial ventilation systems. The valve ensures uniform air distribution, low noise operation, and easy balancing during commissioning.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | Aluminium Disc Valve |
| Material | Spun Aluminium / Aluminium Alloy |
| Construction | One-piece spun aluminium body with adjustable central disc |
| Body Thickness | 1 – 1.2 mm |
| Disc Type | Adjustable Threaded Centre Disc |
| Outer Frame width | 40 mm |
| Application | Supply Air / Return Air / Exhaust Air |
| Airflow Pattern | 360° Radial Adjustable |
| Airflow Control | Manual Adjustment by Rotating Centre Disc |
| Standard Neck Sizes | Ø100, Ø150, Ø200 mm |
| Mounting | Ceiling / Wall |
| Connection | Circular Neck with Mounting Collar |
| Finish | Powder Coated / Natural Anodized |
| Standard Colour | Broken White as standard other RAL Shades as optional |
| Accessories | Gi mounting rings / collars as optional |
Construction Features
- High-quality spun aluminium construction.
- Adjustable centre disc for precise airflow balancing.
- Locking nut to maintain airflow setting.
- Easy installation and maintenance.
Applications
- Residential Ventilation, Apartments & Villas, Office Buildings, Hotels & Resorts
- Hospitals, Toilets & Washrooms, kitchens, Laboratories, Restaurants
Our Drawing and Dimensions

| Size | A | B | C | D | E |
|---|---|---|---|---|---|
| 100 | 165 | 95 | 80 | 100 | 45 |
| 150 | 215 | 140 | 120 | 155 | 65 |
| 200 | 265 | 195 | 160 | 195 | 65 |
Reference Drawing and Dimensions :


| Nominal Opening Size | fA | fB | fC | fD | E | fF |
|---|---|---|---|---|---|---|
| 100 | 145 | 125 | 95 | 75 | 54 | 105 |
| 125 | 170 | 150 | 120 | 100 | 54 | 130 |
| 150 | 220 | 175 | 145 | 125 | 54 | 155 |
| 200 | 270 | 225 | 195 | 150 | 54 | 205 |
Typical Performance Guide :
| Size (mm) | Airflow (CFM) | Static Pressure (Pa) | Noise Level (NC) | Throw Distance (m) |
|---|---|---|---|---|
| Ø100 | 20 | <5 | <20 | 1.5 |
| 40 | 25 | <20 | 2 | |
| 60 | 55 | 30 | 2.5 | |
| 80 | 95 | 35 | 3 | |
| 100 | 145 | 40 | 3.5 | |
| 120 | 190 | 45 | 4 | |
| Ø150 | 40 | 10 | <20 | 2 |
| 60 | 30 | <20 | 2.5 | |
| 80 | 55 | 25 | 3 | |
| 100 | 90 | 35 | 3.5 | |
| 120 | 130 | 40 | 4 | |
| 150 | 230 | 45 | 4.5 | |
| Ø200 | 60 | 15 | <20 | 2.5 |
| 80 | 30 | <20 | 3 | |
| 100 | 50 | 20 | 3.5 | |
| 120 | 85 | 30 | 4 | |
| 150 | 180 | 35 | 4.5 | |
| 200 | 315 | 42 | 5 |

