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Round GI Duct Work

Round GI (Galvanized Iron) duct work is an essential component in modern HVAC systems, widely used for air distribution, ventilation, and exhaust applications. Fabricated from galvanized iron sheets, these ducts are durable, rust-resistant, and capable of withstanding different environmental conditions. Their circular or spiral shape ensures smooth airflow with minimal resistance, making them more efficient compared to traditional rectangular ducts.

One of the key advantages of round GI ducts is their strength and rigidity, which allows them to maintain shape and performance even under higher air pressure. They require fewer joints and sealing materials, reducing the chances of leakage and ensuring cost-effectiveness in both installation and long-term operation. The smooth inner surface also makes cleaning and maintenance easier.

Round GI duct work is commonly applied in commercial buildings, residential projects, and industrial facilities, where it serves for air conditioning, fresh air supply, kitchen exhaust, and mechanical ventilation. When installed properly with appropriate supports, gaskets, and insulation, round GI ducts provide a reliable and efficient solution for healthy indoor air quality.

How to install Motorized Damper with grill in Stair

How to Install Motorized Damper with Grill in a Stair

Installing a Motorized Damper (MD) with a grill in a stairwell is a crucial step in ensuring proper airflow control, safety, and energy efficiency. Staircases in buildings often act as vertical shafts for air movement, and controlling this flow with a motorized damper improves ventilation while meeting fire and comfort requirements.

The first step is planning and preparation. Identify the exact location for the damper within the duct system connected to the stair area. Take accurate measurements of both the duct opening and the grill size to ensure a perfect fit. Always verify that the power supply for the damper’s actuator is available nearby.

Next, install the motorized damper inside the duct or opening. Secure the damper frame with screws or anchors, ensuring it is properly aligned. Connect the actuator wiring according to the manufacturer’s instructions, typically linking it to the control panel, thermostat, or fire alarm system depending on the application. Proper wiring is critical to guarantee automatic opening and closing functions.

Once the damper is secured, attach the grill over the opening. The grill not only enhances appearance but also protects the damper blades and ensures smooth airflow distribution. Use screws or clips to fix the grill firmly and check that it does not obstruct the damper’s movement.

Finally, test the system. Power on the damper actuator and check opening and closing operations. Run the HVAC system to confirm airflow direction and volume. Inspect for air leaks and seal edges with mastic or sealant if required.

In conclusion, installing an MD with a grill in a stairwell requires precise planning, secure installation, correct wiring, and thorough testing. A properly fitted motorized damper enhances ventilation, safety, and comfort in stair areas.