Gas-Tight Shut-Off Dampers

gas-tight shut off damper

Shut-off dampers are implemented to allow or block airflow within HVAC systems on ships, maritime vessels as well as carbon capture applications.

Four pieces are welded together to construct a heavy-duty frame. This allows the damper to be applied on load-bearing constructions including bulkheads, bridges, or onto the sides of vessels.

The steel used to make the dampers is galvanized, painted, or stainless steel. Blades contain stainless steel spring seals or silicon seals. A variety of accessories, as well as an pneumatic, electrical, or manual operation system, are available.

By understanding their features and the benefits they offer, we can truly appreciate their real-world value and the positive impact they have on advancing Carbon Capture and Sequestration (CCS).

For more information to see if this damper is right for your application, contact us here.

Gas-Tight Shut-off Damper in Action!

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Table of Contents


shut off damper

The gas-tight shut-off dampers serve a vital role in shutting off and regulating airflow rates in high-pressure ductwork. It conforms to international standards for both rectangular and round ducts. 

When the damper is open, the blades are aligned with the direction of the airflow, ensuring smooth passage without any substantial pressure loss.

These dampers are widely used in applications where maintaining a high level of tightness and reliability is critical. It is commonly utilized as a shut-off valve, effectively preventing the flow of gas. 

Additionally, it functions as a balancing damper, enabling precise control of airflow rates. This versatility makes it an ideal choice for various industrial applications.

Moreover, gas-tight shut-off dampers, such as the Halton UTG, are particularly suitable for carbon capture systems. Its ability to provide a secure seal ensures efficient trapping and containment of carbon emissions. 

By effectively shutting off and controlling airflow, it contributes to the overall effectiveness and reliability of carbon capture processes, aiding in environmental sustainability efforts.

These dampers are widely used in applications where maintaining a high level of tightness and reliability is critical.

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Dampers used in Carbon Capture

Dampers play a crucial role in ensuring the efficient and effective capture of carbon dioxide (CO2) emissions. 

The following are the key characteristics of an ideal damper for carbon capture and optimization to mitigate climate change:

  1. Gas-Tight Seal: An ideal damper for carbon capture should possess a gas-tight seal. This feature ensures that once the CO2 is captured, it remains securely contained, preventing any leakage back into the atmosphere. By maintaining a reliable seal, the damper helps maximize the efficiency and integrity of the carbon capture system.
  2. High Flow Capacity: Carbon capture involves handling significant volumes of gas. Hence, an ideal damper should have a high flow capacity, allowing for the smooth and uninterrupted movement of gases. With this capability, the damper can effectively manage the large-scale capture of CO2 emissions from industrial sources.
  3. Temperature Resistance: Carbon capture processes often take place in high-temperature environments, such as power plants or industrial facilities. An ideal damper should be designed to withstand and operate reliably under these extreme conditions. With temperature resistance, the damper can effectively handle the hot gases encountered during the carbon capture process.
  4. Quick and Responsive Actuation: In carbon capture systems, quick and responsive actuation of the damper is crucial for optimal control over gas flows. The ability to actuate swiftly and responsively allows for timely adjustments to changing process conditions. This feature ensures efficient capture of CO2 by adapting to fluctuations in gas composition, pressure, or temperature.
  5. Robust Construction: Durability is a key aspect of an ideal damper for carbon capture. It should be built with sturdy materials capable of withstanding the harsh conditions and demands of carbon capture processes. A robust construction ensures that the damper can operate reliably over an extended period, contributing to the long-term effectiveness of the carbon capture system.

By incorporating these key features into the design of dampers for carbon capture, we can enhance the efficiency and reliability of the entire process. 

Investing in the development and implementation of such ideal dampers brings us one step closer to achieving our goals of combating climate change through effective carbon capture.

Reliable Shut-off Dampers in Arctic Conditions

These shut-off dampers are designed to effectively close off the air intake when gas turbines are not in use.

In their open position, these dampers feature blades that align with the direction of the airflow, ensuring minimal pressure loss.

Furthermore, the supplied shut-off dampers are designed to withstand the most extreme arctic conditions. Their robust design allows them to operate flawlessly even in extreme cold, withstanding temperatures as low as -60°C. This exceptional resistance to cold makes them a reliable option for gas turbine applications in harsh arctic environments.


Dampers are a practical choice when it comes to controlling and balancing airflow in high-pressure ductwork. These dampers are designed to meet international standards for both rectangular and round ducts, ensuring compatibility with various systems.

When the dampers are open, the blades are aligned with the direction of the airflow, allowing for smooth passage without causing significant pressure loss. This feature ensures efficient operation without compromising the overall performance of the system.

They are commonly used as shut-off, gas, and balancing dampers in applications where tightness and reliability are of utmost importance. With their dependable design, they provide a trustworthy solution for maintaining air tightness and achieving precise airflow control in diverse settings.

Material Thickness & Dimension

The shut-off, gas, and balancing dampers are designed to meet international standards, providing reliable performance in various applications. The dampers provided come in standard sizes for both rectangular ducts (with widths ranging from 100 mm to 1200 mm and heights from 100 mm to 1600 mm, in 1 mm increments) and circular ducts (with diameters from 100 mm to 1250 mm). Custom dimensions are also available upon request, ensuring a perfect fit for specific needs.

They feature a standard flange width of 27 mm, and flanges and drilling can be provided according to ISO 15138 standards. Additionally, for larger requirements, modular construction sizes are available up to 2400 mm by 3200 mm.

To ensure durability, the frame thickness of the dampers ranges from 3 mm to 10 mm, with the standard frame thickness being 3 mm. The blades of the dampers are crafted using a sandwich design, consisting of two sheets, each 1 mm thick. This construction enhances the structural integrity and performance of the dampers.

Overall, these dimensions and material specifications highlight the versatility and robustness of the dampers, making them a reliable choice for achieving tight shut-off, efficient gas control, and precise airflow balancing in various applications.

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Supplying Dampers

Knape Associates can provide you with fast quotes on the correct dampers for your application.

We are official representatives of leading manufacturers that covers Texas and beyond.

We can also send out a trained specialist to assess the area and make certain the proper equipment is being used for your specific marine application.