ALNOR DAOS-200 Return Damper

The ALNOR DAOS-200 return damper is a precision-engineered component designed to manage airflow within ventilation and HVAC systems. This device serves as a critical barrier against backflow, ensuring that air moves in the intended direction and maintaining the overall efficiency of the ductwork. Built with robust materials, it provides reliable performance in both residential and commercial settings, contributing to stable air distribution and system longevity.

Advantages

The primary benefit of the ALNOR DAOS-200 is its ability to prevent unwanted air reversal, which protects the integrity of the ventilation system and prevents energy loss. Its durable construction ensures consistent operation over time, reducing the need for frequent maintenance. Furthermore, the design facilitates precise airflow regulation, which is essential for achieving balanced indoor climate control and improving the operational efficiency of connected HVAC equipment.

Suitable for

• Residential ventilation systems
• Commercial HVAC ductwork
• Airflow regulation in supply and return lines
• Preventing backdrafts in ventilation ducts

When it may not be suitable

This damper is not intended for use in environments with extreme temperatures or highly corrosive chemical vapors that could degrade the material. It is also not suitable for high-pressure industrial pneumatic conveying systems where specialized heavy-duty valves are required.

Key specifications

• Diameter: 200 mm
• Function: Backflow prevention and airflow regulation
• Application: Ventilation and HVAC ductwork
• Material: Durable galvanized steel

How to use

The ALNOR DAOS-200 should be installed directly into the circular ductwork of the ventilation system. Ensure the damper is oriented correctly according to the intended airflow direction indicated on the housing. It is recommended to secure the connection using appropriate duct sealant or mechanical fasteners to ensure an airtight fit. Once installed, verify that the damper blade moves freely and closes completely when airflow ceases.

What to consider before purchase

• Verify the internal diameter of your existing ductwork matches the 200 mm specification.
• Check the available space in the duct run to ensure proper clearance for the damper housing.
• Confirm the compatibility of the damper material with the specific air quality of your environment.

Usage recommendations

Regularly inspect the damper during routine HVAC maintenance to ensure the blade remains free of dust accumulation and debris, which could impede its movement and affect system performance.