Top quality
Pressure Relief Damper often has a simple but effective structure, including:
Valve body: Can be square, rectangular or round, made from durable materials such as galvanized steel or stainless steel to prevent rust and ensure longevity.
Valve leaf (valve leaf): These are specially designed metal plates that can rotate or flip open when pressure is applied from one side. The number of valve leaflets can vary depending on the size and design of the valve.
Counterweight system (or spring): This is the most important part that determines the opening pressure threshold of the valve. Counterweights (or springs) are attached to the valve leaf and can be adjusted to set the desired opening/closing pressure. When the pressure exceeds the holding force of the counterweight/spring, the valve leaf will automatically open.
Valve stem and bearing: Ensures the valve leaflets move smoothly and accurately.
Valve stem and bearing: Ensures the valve leaflets move smoothly and accurately.
Pressure Relief Damper plays an extremely important role in ensuring the safety and performance of many HVAC systems, especially where strict pressure control is required:
Clean rooms, operating rooms, laboratories: Maintain stable positive or negative pressure to prevent the entry or escape of contaminants. Pressure Relief Damper helps relieve excess pressure when the system is overloaded or when there is a sudden change in pressure.
Fire escape stairwells and hallways: Ensure positive pressure in the stairwell or hallway to prevent smoke from entering in case of fire, and at the same time release excess pressure so that the emergency exit door does not get stuck due to too high pressure.
Ventilation systems in factories, tunnels, parking lots: Release residual pressure that may arise due to fan operation or environmental changes.
Combined with gas fire suppression system (FM200, Novec 1230, CO2): When the gas fire suppression system is activated, a large amount of gas will be sprayed into the room, causing a sudden increase in pressure. The PRD valve will automatically open to release this pressure, protecting the building structure and equipment from damage, while allowing the most effective amount of fire extinguishing gas to be retained.
Control the pressure difference between areas: Ensure the pressure between different rooms or areas is maintained at an acceptable level.
Square Pressure Relief Damper: Used for square air ducts or when installed on walls or partitions.
Pressure Relief Damper round: Used for round air ducts.
Square PRD valve
Round PRD valve
Outstanding advantages
Ensuring safety: This is the top benefit, PRD valves prevent damage to air ducts, equipment and building structures caused by excessive pressure.
Protect people: Make escape safer in emergency situations (such as fire) by maintaining appropriate escape pressure.
Maintain system performance: Stabilizing pressure helps the HVAC system operate more efficiently, reducing the load on fans and other equipment.
Air quality control: Especially important in sensitive environments such as clean rooms.
Automatic operation: No need for power or manual control, making the system reliable and low maintenance.
Energy saving: Minimizes energy loss due to uncontrolled pressure differentials.
