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This section provides an overview for barometric dampers as well as their applications and principles. Also, please take a look at the list of 10 barometric damper manufacturers and their company rankings. Here are the top-ranked barometric damper companies as of December, 2024: 1.KW USA, 2.iO HVAC Controls, 3.Young Regulator.
Table of Contents
A positive pressure damper, also known as a differential pressure damper, relief damper, or barometric damper, is a device that regulates the internal pressure of a clean room to maintain positive pressure in the clean room.
By adjusting the differential pressure between the inside and the outside of the room, the positive pressure damper makes it possible to maintain a constant positive pressure inside a clean room.
Positive pressure dampers are mainly installed in clean rooms to maintain a positive pressure inside the clean room that is one degree higher than the pressure outside the room.
They are also used in operating rooms.
Positive pressure dampers keep the room pressure higher than that outside the room, venting out only the amount of pressure that is higher than the specified value and closing the damper when outside pressure is applied to keep the room clean at all times.
Positive pressure dampers are installed in ordinary clean rooms because it is necessary to keep the room at a positive pressure to prevent dust from entering from the outside.
One of the four principles for maintaining air cleanliness above a certain level is to "prevent the entry of contaminated air from the outside," and for this purpose, the air inside the room must be kept at positive pressure (high pressure relative to the air outside the room).
On the other hand, if the pressure inside the room is too high compared to outside the room, it may cause adverse effects such as difficulty in opening and closing doors when entering and leaving the room.
Therefore, the opening door of the positive pressure damper opens and closes from time to time in response to the pressure difference with the air outside the room, making it possible to keep the air inside a clean room at a constant positive pressure.
Depending on the installation method, it is also possible to make the negative room pressure in the opposite direction.
In a clean room environment with strong pressure, the positive pressure damper may open and close frequently.
As a countermeasure, a weight can be attached to the back of the positive pressure damper's open door to adjust the degree of opening.
Incidentally, the cleanliness of the air in a clean room is affected by the temperature, humidity, and cleanliness of the room, as well as internal heat generation, personnel in the room, local exhaust, and other factors that affect the capacity of the clean room air conditioning system.
There is also a damper with a fireproof shutter.
These dampers with fire shutters have a built-in thermal fuse that automatically closes the blades of the opening when the temperature rises above a certain level (72°C).
This allows the airflow between the damper and the point of fire to be blocked, preventing the spread of fire and the filling of toxic gases.
Variations for different applications are also available, such as X-ray protective types.
*Including some distributors, etc.
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iO HVAC Controls, founded in 2013 and located in Indianapolis, Indiana, is a manufacturer of heating, ventilation, and air conditioning controls. Its broad range of products includes bypass dampers, fresh air ventilation, thermostats, zone dampers, and wireless solutions. These products find use in industries and applications that require efficient and customized control of HVAC systems. The company’s products are used to maintain indoor air quality, energy efficiency, and comfort settings in both residential and commercial buildings. The company caters to industries such as industrial facilities, healthcare, and education.
Young Regulator, founded in 1930 and located in Walton Hills, Ohio, is a manufacturer of control systems, dampers, and temperature regulators. The company’s diverse range of products includes a round VAV damper, an electronic balancing motor kit, extraction vents, a VAV diffuser, and a balancing station. These products have general use in industries and applications that demand precise control of airflow, ventilation, and temperature. The company’s products are used for efficient HVAC operation and the maintenance of comfortable and healthy indoor environments in commercial, industrial, and residential spaces.
Alan Manufacturing, Inc., founded in 1992 and located in Wooster, Ohio, is a manufacturer of HVAC dampers and related hardware, Zone Control System products, and duct supports. The company’s broad range of products includes motorized damper systems, manual damper systems, and damper hardware. These items are utilized in fields and situations where precise temperature, ventilation, and airflow control are necessary. The company's products are utilized to maintain suitable indoor climates in commercial, industrial, and residential settings by optimizing HVAC systems for effective operation.
KW USA, founded in 1943 and headquartered in Fichtenberg, Germany, is a manufacturer of draft equipment. Its broad range of products includes RSD fans, barometric dampers, mechanical dampers, silencers, and controls. These products have a range of applications in ventilation, air circulation, and environmental control. The company’s products are used in settings such as industrial, commercial, and residential spaces to regulate airflow, enhance air quality, reduce noise, and optimize heating, ventilation, and air conditioning systems.
BISCO Enterprise, founded in 1974 and located in Schaumburg, Illinois, is a distributor of dust collectors and air cleaning and purifying equipment. The company’s diverse range of products includes paint booths, ducting, fume extractors, fume arms, and replacement air filters. These products are used in industrial and commercial settings, aiming to ensure air quality, worker safety, and compliance with environmental standards. The company’s products are utilized in industries such as manufacturing, automotive, woodworking, and chemical processing to control fumes, particles, and contaminants and maintain clean and safe working environments.
Boss Products LLC., founded in 2012 and located in San Antonio, Texas, is a supplier of fire and explosion protection solutions. Its broad range of products includes power supplies, power boxes, variable-speed drives, custom panels, and auto blast gates. These products are used for preventing accidents, ensuring compliance, and maintaining a safe working environment in these industries. The company’s products are employed to provide power to safety systems, regulate equipment speed, manage airflow, and ensure control and monitoring systems. These offerings cater to industries such as manufacturing, chemical, petrochemical, oil and gas, and pharmaceutical.
T.F. Ehrhart Company, established in 1952 and located in Quincy, Illinois, is a supplier of premier heating and air conditioning contractors. The company offers a broad range of products that include boilers and hydronics, ventilation, HVAC tools, adhesives, and diffusers. These products find general use across industries where heating, ventilation, and air conditioning are essential. The company’s products are used to maintain comfortable indoor environments, improve air quality, and ensure efficient operation in residential, commercial, and industrial spaces. The company caters to industries such as healthcare, education, manufacturing, and data centers.
Copperfield Chimney Supply, established in 1991, is a supplier of chimney and hearth products headquartered in Scranton, Pennsylvania and with additional locations in Bridgeport, NJ, Cleveland, OH, and Reno, NV. The company’s product portfolio comprises caps & dampers, chimneys & stovepipes, relining & venting supplies, and hearth appliances & accessories used in residential and commercial settings. They also offer various servicing supplies such as silicone, sealant caulk, chimney cleaning rods, dryer wall vents, and soot suits. They supply products from companies such as Modern Flames, Ventis, Napoleon, DuraVent, and Selkirk.
TBC Supply, established in 2019 and located in Atlanta, Georgia, is a supplier of Big Ass Fans and GREE Mini Splits to Schwank Heaters and Price Industries Room Air Purifiers. The company offers a broad range of products that include LED lighting, ceiling fans, portable cooling systems, zone dampers, and UVC light disinfection. These products have applications in industries and settings where energy efficiency, improved air quality, and comfort are priorities. The company’s products are used for creating comfortable, efficient, and healthier indoor environments in commercial, industrial, and residential spaces.
Lindemann Chimney Co., founded in 1969 and located in Lake Bluff, Illinois, is a distributor of chimney supplies and tools. The company offers a diverse range of products, including chimney pipes, chimney liner insulation, chimney caps, chimney dampers, and chimney fans. These products are utilized to enhance the safety, efficiency, and functionality of residential and commercial chimneys and fireplace systems. The company’s products are used for proper venting, insulation, protection, draft control, and improved airflow within chimneys. These offerings cater to industries such as commercial construction, property management, home improvement, hospitality, and chimney cleaning.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | KW USA |
18.2%
|
| 2 | iO HVAC Controls |
16.4%
|
| 3 | Young Regulator |
12.7%
|
| 4 | T.F. Ehrhart Company |
10.9%
|
| 5 | Copperfield Chimney Supply |
9.1%
|
| 6 | Alan Manufacturing, Inc., |
9.1%
|
| 7 | Boss Products LLC. |
9.1%
|
| 8 | TBC Supply |
7.3%
|
| 9 | BISCO Enterprise |
3.6%
|
| 10 | Lindemann Chimney Co. |
3.6%
|
Derivation Method
The ranking is calculated based on the click share within the barometric damper page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
6 | 100.0% |
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