NON RETURN DAMPER – DUCT MOUNTED

Model No. : ANRD-D-AL

Specification:
Extruded Aluminium Heavy Duty Non Return Damper for One Way Restricted Air Flow with Rigid Aluminium Blades and gasket. Linkage can be provided to connect all blades as option for simultaneous operation.

DESCRIPTION

  • Frame and blades are made of high quality extruded aluminium profiled construction with the advantages of corrosion resistance and rigidity.
  • Air operated damper blades are fixed to the frame by self-lubricating metal bushes and reinforced with round metal pipes end to end.
  • Blade edges are sealed with foam gasket to avoid rattling noise and to provide air tight operation.
  • Blades open fully or at any angle depending on the air velocity. Blades stay in position of opening without fluctuating when there is constant air flow.
  • Blades close quietly when the air flow stops.
  • Designed to maintain constant pressure level inside pressurized rooms by relieving excess air when it exceeds the desired limit.
  • Generally installed on diesel generator, plant rooms ventilation system and exhaust ducting.
  • Available in square and rectangular sizes.
  • Frame has a 40 mm flange for Duct mounting.
  • Brass bushes and steel reinforcements are optional for heavy duty applications. (Model: ANRD-D-AL-H)

Non Return Damper – Duct Mounted Manufacturer in India | Aluminium Backdraft Damper for HVAC

Our Non Return Damper – Duct Mounted is a high-efficiency airflow control device designed to prevent reverse airflow and maintain pressure balance in HVAC duct systems. As a leading Non Return Damper manufacturer in India, we provide premium quality aluminium backdraft dampers that ensure smooth airflow, durability, and reliable performance across commercial and industrial ventilation systems in India.

Manufactured using high-quality extruded aluminium profiles, the Duct Mounted Non Return Damper in India offers excellent corrosion resistance, structural rigidity, and long-lasting durability. Its robust construction makes it ideal for continuous operation in demanding HVAC environments.

Efficient Backdraft Prevention in Duct Systems

The Non Return Damper for Duct Mounting is designed to allow air to flow in one direction while preventing reverse airflow. This ensures proper functioning of HVAC systems by eliminating backflow of air, dust, and contaminants.

The Backdraft Damper in India plays a critical role in maintaining system efficiency and protecting equipment from airflow disturbances.

Automatic Air Operated Blade Mechanism

The Non Return Damper operates automatically based on air velocity and pressure. The blades open fully or partially depending on airflow and remain stable without fluctuation during continuous operation.

When airflow stops, the blades close quietly, preventing reverse airflow. This smooth and silent operation enhances overall system performance and user comfort.

Reinforced Blade Design for Strength

The Duct Mounted Non Return Damper in India features blades that are reinforced with round metal pipes end-to-end, providing additional strength and stability. The blades are mounted using self-lubricating metal bushes, ensuring smooth movement and long-term reliability.

For heavy-duty applications, brass bushes and steel reinforcements are available as optional features (Model: ANRD-D-AL-H), making the damper suitable for high-performance industrial environments.

Airtight Sealing with Foam Gasket

The blade edges of the Non Return Damper are fitted with foam gaskets, which help minimize air leakage and eliminate rattling noise. This ensures airtight operation and improves the efficiency of HVAC systems.

The sealing mechanism enhances pressure control and reduces energy loss in ventilation systems across India.

Pressure Relief and Air Balancing

The Non Return Damper in India is designed to maintain constant pressure levels in pressurized rooms by releasing excess air when required. This helps protect equipment and maintain optimal indoor conditions.

It is particularly useful in applications where pressure control is critical for system performance.

Durable Aluminium Construction

Our Aluminium Non Return Damper in India is constructed using corrosion-resistant aluminium materials that provide excellent durability and low maintenance. The strong frame and reinforced blades ensure stable operation even in high airflow conditions.

The frame is designed with a 40 mm flange for duct mounting, allowing secure and easy installation.

Flexible Size Options

The Non Return Damper – Duct Mounted is available in both square and rectangular sizes, making it suitable for different duct configurations and HVAC system designs.

Custom sizes can also be provided to meet specific project requirements across India.

Applications Across India

Our Duct Mounted Non Return Dampers are widely used in HVAC installations across India, including:

  • Diesel generator rooms

  • Industrial plant rooms

  • Exhaust duct systems

  • Commercial ventilation systems

  • Pressurized rooms

  • Power plants and infrastructure projects

These environments require reliable airflow control and backdraft prevention solutions.

Why Choose Our Non Return Damper – Duct Mounted in India?

  • Trusted Non Return Damper Manufacturer in India

  • High-quality extruded aluminium construction

  • Prevents reverse airflow effectively

  • Automatic blade operation based on air velocity

  • Reinforced blades for enhanced strength

  • Airtight sealing with foam gasket

  • Suitable for duct mounting with 40 mm flange

  • Optional heavy-duty components available

  • Custom sizes available for HVAC projects

If you are looking for a reliable Non Return Damper supplier in India, aluminium duct backdraft damper manufacturer, or HVAC pressure relief damper, our products offer superior airflow control, durability, and efficiency.

We proudly supply HVAC dampers across India, supporting contractors, builders, architects, and HVAC consultants with high-quality air control solutions designed for modern ventilation and air conditioning systems.

PRODUCT ORDER CHECKLIST

  • Material: Aluminium / GI
  • Gauge: 16 / 18 / 20 / 22 (for GI)
  • Listed Size
  • Linkage: Yes / No