GI NRD 150×150 Flange Type is a galvanized iron non-return damper that prevents reverse airflow in HVAC ducts. Its flange-mounted frame ensures easy installation, and gravity-operated blades allow one-way airflow without power. Ideal for exhaust, fresh air, and ventilation systems.
The GI NRD 150×150 Flange Type is a galvanized iron non-return damper designed to prevent backflow of air in HVAC duct systems. With a square 150mm x 150mm dimension and flange-mounted frame, it allows air to flow in one direction while automatically closing to block reverse airflow. It’s ideal for ventilation systems that require pressure control and air integrity between zones.
Preventing reverse airflow in HVAC ducts
Fresh air intake and exhaust systems
Fan outlet protection
Commercial kitchens, toilets, and exhaust systems
Air pressure balancing in multi-zone ventilation
Durable GI Construction: Made from corrosion-resistant galvanized iron for long-lasting performance
Automatic Operation: Blades open with airflow and close automatically when airflow stops
Flange Type Frame: Easy to mount between duct sections or wall openings
Low Pressure Drop: Designed for minimal resistance to forward airflow
Compact Size: 150x150mm is ideal for localized or small-area ventilation control
Maintenance-Free: Simple mechanical design requires no power or manual adjustment
| Parameter | Details |
|---|---|
| Product Name | GI NRD (Non-Return Damper) |
| Type | Flange Mounted |
| Material | Galvanized Iron (GI) |
| Size | 150mm x 150mm |
| Operation | Gravity-operated blade |
| Installation | Flange type (bolted or sealed) |
| Airflow Direction | One-way only |
| Application Area | HVAC Ducts – Supply or Exhaust |
| Corrosion Resistance | Yes |
Does this NRD require any external power or control?
No, it operates mechanically using gravity or airflow pressure—no power needed.
Can this be installed in vertical ducts?
Yes, but performance is best in horizontal airflow direction; vertical mounting may reduce effectiveness depending on blade design.
We deliver within 1-2 business days. Orders over 500 AED enjoy free shipping. Currently, we ship within the UAE only.
Safe delivery, secure checkout — Visit our shipping method.
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The GI NRD 150×150 Flange Type is a galvanized iron non-return damper designed to prevent backflow of air in HVAC duct systems. With a square 150mm x 150mm dimension and flange-mounted frame, it allows air to flow in one direction while automatically closing to block reverse airflow. It’s ideal for ventilation systems that require pressure control and air integrity between zones.
Preventing reverse airflow in HVAC ducts
Fresh air intake and exhaust systems
Fan outlet protection
Commercial kitchens, toilets, and exhaust systems
Air pressure balancing in multi-zone ventilation
Durable GI Construction: Made from corrosion-resistant galvanized iron for long-lasting performance
Automatic Operation: Blades open with airflow and close automatically when airflow stops
Flange Type Frame: Easy to mount between duct sections or wall openings
Low Pressure Drop: Designed for minimal resistance to forward airflow
Compact Size: 150x150mm is ideal for localized or small-area ventilation control
Maintenance-Free: Simple mechanical design requires no power or manual adjustment
| Parameter | Details |
|---|---|
| Product Name | GI NRD (Non-Return Damper) |
| Type | Flange Mounted |
| Material | Galvanized Iron (GI) |
| Size | 150mm x 150mm |
| Operation | Gravity-operated blade |
| Installation | Flange type (bolted or sealed) |
| Airflow Direction | One-way only |
| Application Area | HVAC Ducts – Supply or Exhaust |
| Corrosion Resistance | Yes |
Does this NRD require any external power or control?
No, it operates mechanically using gravity or airflow pressure—no power needed.
Can this be installed in vertical ducts?
Yes, but performance is best in horizontal airflow direction; vertical mounting may reduce effectiveness depending on blade design.
We deliver within 1–2 business days. Orders over 500 AED enjoy free shipping. Currently, we ship within the UAE only.
Safe delivery, secure checkout — Visit our shipping method.
There are no reviews yet.
The GI NRD 150×150 Flange Type is a galvanized iron non-return damper designed to prevent backflow of air in HVAC duct systems. With a square 150mm x 150mm dimension and flange-mounted frame, it allows air to flow in one direction while automatically closing to block reverse airflow. It’s ideal for ventilation systems that require pressure control and air integrity between zones.
Preventing reverse airflow in HVAC ducts
Fresh air intake and exhaust systems
Fan outlet protection
Commercial kitchens, toilets, and exhaust systems
Air pressure balancing in multi-zone ventilation
Durable GI Construction: Made from corrosion-resistant galvanized iron for long-lasting performance
Automatic Operation: Blades open with airflow and close automatically when airflow stops
Flange Type Frame: Easy to mount between duct sections or wall openings
Low Pressure Drop: Designed for minimal resistance to forward airflow
Compact Size: 150x150mm is ideal for localized or small-area ventilation control
Maintenance-Free: Simple mechanical design requires no power or manual adjustment
| Parameter | Details |
|---|---|
| Product Name | GI NRD (Non-Return Damper) |
| Type | Flange Mounted |
| Material | Galvanized Iron (GI) |
| Size | 150mm x 150mm |
| Operation | Gravity-operated blade |
| Installation | Flange type (bolted or sealed) |
| Airflow Direction | One-way only |
| Application Area | HVAC Ducts – Supply or Exhaust |
| Corrosion Resistance | Yes |
Does this NRD require any external power or control?
No, it operates mechanically using gravity or airflow pressure—no power needed.
Can this be installed in vertical ducts?
Yes, but performance is best in horizontal airflow direction; vertical mounting may reduce effectiveness depending on blade design.
There are no reviews yet.
EXCELLENT Based on 55 reviews Posted on Irtazaaslam 56Trustindex verifies that the original source of the review is Google. Good Quality products with reasonable price... Pvc TapesPosted on HOUSE OF HVACTrustindex verifies that the original source of the review is Google. AL RAMIZ EQUIPMENT (ARE) IS MOST POPULAR AND REALIBALE BRAND . SERVICE IS TOO GOOD AND FAST . PRODUCT QUALITY IS PIONEER.Posted on Yousha KhanTrustindex verifies that the original source of the review is Google. I recently purchased the Ako temprature controler product and Its performance is exceptional, meeting all my expectations and more. And the durability seems promising for long-term use. Overall, I highly recommend this product to anyone looking for quality and reliability definitely worth the investment!Posted on Sohail ShamTrustindex verifies that the original source of the review is Google. Perfect quality with good rates and ontime delivery.Posted on syeda sadafTrustindex verifies that the original source of the review is Google. Best services 👍Posted on naeem bhattiTrustindex verifies that the original source of the review is Google. We are dealing with us good service and quality compromise and full arrange.Posted on MH DelwarTrustindex verifies that the original source of the review is Google. Services are too good and fast.Posted on Tahir AbbasTrustindex verifies that the original source of the review is Google. Best service on time and never compromisePosted on Hamayun IqbalTrustindex verifies that the original source of the review is Google. One stop solution for all HVAC and refrigeration productsPosted on Ahmed NasirTrustindex verifies that the original source of the review is Google. Best place to buy air conditioning parts in sharjah His rate and material quality is very good
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