Choosing the Right Corrosive Duty Damper

industrial dampers

In the complex world of industrial environments, maintaining the right conditions is more than just a question of comfort—it’s a crucial factor for safety, efficiency, and the longevity of your equipment. One of the critical components that ensure these conditions is an often-underappreciated piece of machinery: the damper.

When it comes to managing airflow, especially in environments where corrosive gases and substances are part of the daily operations, the importance of having the right damper in place cannot be overstated. 

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Among these, Corrosive Duty Dampers stand out due to their robust design and ability to handle harsh and hostile conditions, significantly contributing to the overall effectiveness and longevity of industrial ventilation systems.

In this article, we will delve into the world of corrosive duty dampers, shedding light on their significance, the process of selecting the right damper for your industrial needs, and a comparison of different damper types. 

Our aim is to provide you with the necessary knowledge to make informed decisions about this crucial aspect of your industrial ventilation system.

Corrosive duty dampers stand out due to their robust design and ability to handle harsh and hostile conditions, significantly contributing to the overall effectiveness and longevity of industrial ventilation systems.

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Types of Industrial Dampers

Function of Corrosive Duty Dampers

Corrosive duty dampers are specialized control devices designed to regulate the flow of air and gases within ventilation systems in industrial settings where corrosive elements are present. They are essential components of ventilation, heating, and air conditioning (HVAC) systems in environments exposed to aggressive, corrosive gases, and conditions.

The primary function of these dampers is to prevent the damaging effects of corrosive elements, such as hydrogen sulfide, chlorine, sulfur dioxide, ammonia, and many others, which can significantly erode and degrade equipment over time. By using corrosion-resistant materials in their construction, these dampers effectively ensure the durability of the ventilation systems and the overall infrastructure.

Constructed with materials like Stainless Steel, Fiberglass (FRP), Polyvinyl Chloride (PVC), or Polypropylene, these dampers resist corrosive elements and control the airflow, ensuring the system operates optimally while extending the lifespan of the equipment. They are commonly found in industries such as wastewater treatment plants, chemical plants, pulp and paper factories, and facilities near coastal and marine environments.


Importance of choosing the right damper for the right environment

Choosing the right corrosive duty damper is an essential part of maintaining a robust and efficient ventilation system. The proper damper can prevent system malfunctions, extend the life of your equipment, and ensure a safer and healthier work environment. Here are the key reasons why it’s crucial:

Different industrial settings deal with various corrosive gases and conditions. For example, a wastewater treatment plant might encounter issues with hydrogen sulfide, while a chemical plant might be exposed to a range of corrosive materials from gases to solids. It’s crucial to choose a damper that can effectively resist the specific corrosive elements present in each setting.

The right damper helps maintain optimal airflow within the ventilation system, which can result in energy savings and better operational efficiency. On the contrary, an inappropriate damper might result in increased energy consumption and reduced system performance.

An effective damper can mitigate the risk of equipment failure that could potentially lead to dangerous situations. It also ensures the safe operation of the ventilation system by controlling the airflow of corrosive gases.

The use of a suitable corrosive duty damper can prevent the corrosive gases from eroding the ventilation system and other equipment, thereby prolonging their life and reducing the cost of maintenance and replacements.

Understanding the specific environmental conditions of your industrial setting is key to making an informed decision when choosing the right corrosive duty damper. It’s not just about ticking a box in a list of requirements; it’s about ensuring efficiency, safety, and longevity in a challenging industrial environment.

Corrosive DutyDamper Manufactures

venco fans manufacturer

Venco Dampers

United Enertech Supplier, united enertech distributor

United Enertech

hartzell industrial fans

Hartzell Fans

chicago plastic systems

Chicago Plastic Systems

Looking for Backdraft Dampers?

The Selection Process: Fire-Protection vs Fire-Resistance Ratings

When choosing the right damper for a corrosive environment, it’s essential to consider both fire-protection and fire-resistance ratings. These ratings, while often conflated, serve different purposes in the selection process. Let’s examine each one and its implications:

This rating refers to a damper’s ability to prevent the spread of fire within a system or structure. Fire protection dampers are typically used in HVAC ductwork to stop flames from spreading to other parts of the building. When choosing a corrosive duty damper, it’s important to ensure it has a suitable fire-protection rating that aligns with the specific fire safety requirements of your facility.

On the other hand, fire-resistance rating refers to how long a damper can maintain its structural integrity and function when exposed to fire. Dampers with high fire-resistance ratings can withstand high temperatures for longer periods, thereby providing extra time for safe evacuation and for firefighters to control the situation.

In corrosive environments, where equipment is constantly exposed to harsh elements, both ratings are paramount. A damper with a high fire-protection rating will safeguard the system from fire propagation. Concurrently, a high fire-resistance rating means the damper will hold up under fire, buying valuable time in a dangerous situation.

When selecting a damper, it’s crucial to balance these two aspects based on the specific needs and safety standards of your facility.

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We are official distributors for the manufacturers listed below. As official representatives, we’ll be happy to help explain the best damper for your application. Contact us for a quote or any information regarding their products.

Comparing Different Types of Corrosive Duty Dampers

Delving into the world of corrosion resistant ventilation equipment, a myriad of selections await the discerning professional. Their construction and properties cater to the varied demands of corrosive environments.

 A key player in this sector, Fiberglass Reinforced Plastic (FRP) dampers primarily find their use on fan inlets or outlets to manage airflow. Constructed for harsh environments, these dampers display robust resistance against aggressive fumes or vapors.

For instance, Hartzell Air Movement offers FRP dampers with options for additional abrasive/erosion-resistant coating and electrostatic grounding, making them suited for the most corrosive environments.

Parallel to FRP dampers in many respects, PVC dampers excel in many corrosive applications.

They might be slightly more delicate with fluctuating temperatures compared to their FRP counterparts, but their excellent chemical resistance, especially with polypropylene wheels, makes them a valuable choice in industries dealing with corrosive gases.

Augmenting the role of dampers in controlling airflow, PVC and FRP duct systems provide an outstanding defense against acids, bases, and salts.

Their operation at maximum temperatures, ranging from 140 to 200 degrees Fahrenheit, makes them suitable for a variety of industrial settings. One example is Chicago Plastic Systems’ PVC duct system, known for its reliability in highly corrosive environments.

When dealing with noise issues in corrosive environments, Fiberglass (FRP) silencers serve as the ideal solution. These silencers can reduce noise while withstanding the harsh conditions of airstreams filled with corrosives and condensation. Hartzell Air Movement’s FRP silencers, for example, are a testament to this functionality.

In this expansive landscape of corrosion-resistant ventilation equipment, each product plays a vital role in preserving the integrity of industrial operations amidst the onslaught of corrosive elements.

Investing in the right corrosive duty damper and corresponding equipment, such as those mentioned, can dramatically improve the longevity and performance of your ventilation system.

An Overview of Corrosion-Resistant Ventilation Equipment

Corrosive duty dampers find widespread application across various industrial sectors. Here are some notable examples:

In these facilities, the aggressive nature of wastewater and the chemicals used to treat it produce by-products that can corrode metallic components. For instance, Hydrogen sulfide is a primary gas of concern, found in areas like the sludge drying room, lift stations, and grit chambers. Given the harsh environment, Fiberglass Reinforced Plastic (FRP) is often the material of choice for dampers and other ventilation equipment here.

Many chemical processes generate corrosive gases that pose serious corrosion issues. These substances can range from gases/vapors to solids and often disperse into the air during processing. After understanding the constituents in the airstream or ambient environment, materials for dampers and other equipment are carefully selected. For instance, PVC dampers are frequently employed due to their excellent resistance against many corrosive chemicals.

Various stages in this industry, including pulping, pressing, and bleaching, can create highly corrosive environments. Predominant corrosive gases in this sector are Chlorine and Chlorine Dioxide. Depending on the specific conditions, Stainless Steel or FRP dampers might be used, both offering excellent corrosion resistance.

In coastal and marine facilities, the Sodium Chloride content in saltwater accelerates the oxidation of iron and steel, causing equipment deterioration. For such challenging conditions, dampers with superior corrosion resistance, such as those made from Stainless Steel or specially treated alloys, are crucial.

These are just a few examples. Any industrial sector dealing with corrosive substances, whether in the form of gases, liquids, or solids, can benefit from the careful selection and use of appropriate corrosive duty dampers.

Key Takeaways from Corrosive Duty Dampers & Equipment

To sum up, the selection of the correct corrosive duty damper is pivotal to maintaining the integrity of industrial ventilation systems. The specific needs of each industrial environment, in terms of corrosion resistance and the potential interaction with a variety of aggressive gases, are key factors that should shape this decision.

We encourage all professionals involved in these industries to dedicate thorough thought to their choice of damper. Remember, this choice does not only affect the immediate performance of your ventilation system but also its longevity and, consequently, your investment. The right choice of corrosive duty damper can greatly enhance your system’s resilience and operational lifespan.

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Providing Corrosive Duty Dampers to the Following Industries
Providing Industrial Ventilation Products to the Greater Chicago area & WE Ship Nationwide

R. Williamson & Associates can provide you with fast quotes on the correct equipment for your application.

We are official representative covering Illinois, Wisconsin, Minnesota, Michigan, Indiana and we ship nationwide.

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

We run tests on-site to see how cost effective each model will be to assure maximum efficiency.

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