Back draught damper We are constantly striving to develop and 4 Inch Backdraft Damper Back Draft Vent Duct Shutter Blocker, Backflow Ducting Insert One-Way Airflow Preventer with Inline Springs Loaded Folding Blades, HVAC Extractor Range Fan Hood Deflector Add to cart 4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Vent Deflector Jul 15, 2021 · Buy 6 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector: Draft Stoppers - Amazon. Apr 25, 2025 · When it comes to kitchen ventilation, backdraft dampers play a critical role. Designed to prevent reverse airflow in HVAC systems, CVS backdraft dampers offer durable, low-leakage performance for commercial and industrial ventilation. Clarifying their differences and similarities results in better HVAC system management and helps ensure the correct components are 4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector - Black 100+ bought in past month Add to cart Feb 24, 2022 · The back draught valve can be inserted into a non-flexible metal or plastic duct directly, but for flexible duct you must use steel duct clamps to secure the backdraft damper Jul 15, 2021 · 【Wide Application】 These backdraft dampers can be widely used in ACs, exhaust fans, extractors, range hoods, heating ducts, vents and other residential, commercial and industrial applications 【Note】Back draught valves can be inserted into ventilation ducts which are flexible or non flexible. Read on to understand more about backdraft dampers and how to use them in both residential and commercial settings. In order for a home to serve the purpose May 27, 2021 · Manual dampers are not suited for use as backdraft dampers, which require frequent changes in blade position. Barometric dampers and backdraft dampers are two main damper types with features that allow them to perform distinct functions. These dampers are pushed open when the ventilation system is running and use gravity to close when it is not to prevent the backflow of air or materials. The damper is either a Spring Return type for both horizontal and vertical mounting or Gravity Return used in vertical venting only. Backdraft dampers allow airflow in one direction and prevent airflow in the other. Home - K-Ventil Backdraft dampers can either be operated by gravity (where pressure or velocity opens and closes the damper) or motorized to open and close when required. Industrial backdraft dampers can be applied to exhaust or intakes and are designed to prevent backflow at static pressures up to 20 in. Large selection of metal and plastic valves we keep in stock. FAMCO’s backdraft dampers have a 2-blade assembly and a foam seal that keeps air from coming back in, and are typically used for heat exchangers, exhaust systems, solar heating systems, and other intake or or exhaust applications where a powered damper is not needed. Nov 11, 2019 · Backdraft dampers provide a cost-effective way to direct air in one direction. At United Enertech, we offer both gravity dampers (which use air pressure or weight to function) and spring-loaded backdraft dampers (which use mechanical springs to enhance closure speed and sealing performance). com FREE DELIVERY possible on eligible purchases Back draught shutters are designed to block the return air flow in ducts, fans, ventilation and recuperation systems. Please rest assured Back Draught Damper to wholesale custom made ventilation plastic air valve at competitive price from our factory. A relief damper is developed with an elevated and adjustable start-open pressure while providing the backdraft function. They contribute to temperature control and insulation, energy savings, and maintaining a consistent, powerful flow of range hood air pressure. The BDR2 round backdraft damper was developed in response to industry requirements for a round backdraft damper. Both gravity and motor operated options available. Whether you are a contractor, HVAC professional, or facility manager, the user-friendly design of these dampers streamlines the installation process, reducing downtime and ensuring a hassle-free incorporation into your system. Spring loaded for positive closure against interior gasket. In this installation video, we show you how to install a back draft damper. Whether you're in a The BD-90 is a horizontal mount backdraft damper designed to allow vertical airflow up and prevent reverse airflow. Backdraft dampers allow airflow in one direction and prevent reverse airflow. Mar 10, 2025 · Industrially, backdraft dampers prevent system backflow of harmful fumes or chemicals, lowering the re-entry of dangerous exhaust. The choice of damper depends on the specific application and requirements of the HVAC system: Gravity Dampers: Operate without the need for mechanical assistance, relying on gravity to close the damper. Designed to provide anti back draught, and fit in between Solid Plastic Ducting, Flexible Ducting. The backflow damper opens and closes automatically. Our backdraft dampers are designed for seamless integration into new or existing ventilation systems. The type of fan and distance allowed between the fan and the damper will determine the air velocity pro When back draft dampers are installed in the vertical plane, blades must always be horizontal. Manufactured to order from lightweight and corrosion-resistant aluminium. As one of the most professional Back Draught Damper manufacturers and suppliers in China, we're featured by quality products and good service. They are designed to prevent air from flowing back into a building when the fan is turned off, ensuring optimal performance and protecting against potential hazards. Commercial Backdraft Dampers A commercial backdraft damper (Figure 2) is a gravity damper when non-motorized allowing airflow in one direction only. What Is a Backdraft Damper? A backdraft damper, also known as a gravity damper, is a piece of equipment that allows air to flow through in one direction while preventing air Material: The 4 inch Backdraft damper is made out of a Galvanized steel, the flap leaves are made of aluminum, while the Axis and spring are made of stainless steel and can withstand temperatures from 14 to 140 °F Wide applications: Back draught valves can be inserted into ventilation ducts which are flexible or non-flexible. The commercial dampers provide low pressure openings with exceptional pressure drop performance, while the industrial line includes heavier gauge materials to withstand the high velocities and back pressures associated with these applications. Motorized dampers have an integrated motor that opens and closes the damper when the system runs. The dampers are opened by air pressure differential and closed by gravity. o acheive uniform air at the back draft damper. . Back Draft dampers open and close automatically. Backdraft dampers (also known as gravity dampers) are used in ventilation systems to allow airflow in one direction and prevent airflow in the opposite direction. Backdraft dampers may be opened by air pressure differential and closed by gravity (hence the common name gravity dampers), that is, the system pressure and flow operates the damper, or Backdraft damper - what are they made of? Backdraft dampers also refer to as non return dampers have a split flap closure and allow the airflow to pass in one direction only. Free, same-day shipping for in-stock orders over $25. Light weight, suitable for 4in pipelines 3. Proven design to protect against backdraft in your appliance venting Easy to install, heavy duty 26 gauge galvanized metal Foamed shutter system for quiet closure Vertical or horizontal mounting, with one end crimped Dampers are available in sizes 3" up to 24" ducting. It has a strong spring and can be installed either horizontally or vertically. This blog will explore the ins and outs of a louver and a backdraft damper, things to keep in mind when selecting a contractor for installation, and why it’s better to act rather than react when it comes to fire safety. External heavy duty linkage, blade counterbalance, and ball bearings are standard. Add to cart 4 Inch Backdraft Damper Back Draft Vent Duct Shutter Blocker, Backflow Ducting Insert One-Way Airflow Preventer with Inline Springs Loaded Folding Blades, HVAC Extractor Range Fan Hood Deflector Add to cart neverest® RKI 4" Professional Backdraft Damper Inline Spring Loaded for Dryer Duct Fits Only with Metal Ducts 50+ bought in Jul 9, 2024 · Backdraft dampers play a crucial role in the efficient and safe operation of exhaust fans. A backdraft damper is a device installed in ventilation systems to control the flow of air. How Does a Backdraft Damper Work? Backdraft dampers are often the unsung heroes of HVAC systems that ensure air flows in the way it was intended. Easily fits into your vent system, the installation requires minimal labor and time. 4 in spring loaded back draft damper. 4. We provide innovative solutions in the field of ventilation of premises. Application Model HB-110 is a heavy duty backdraft damper with a double flanged galvanized steel channel frame and extruded aluminum blades. The damper features a galvanized steel frame with a flange on the discharge side and aluminum blades. Same and Next Day Delivery. Backdraft Dampers Select from a variety of backdraft dampers for commercial applications. Backdraft dampers can either be operated by gravity (where pressure or velocity opens and closes the damper) or motorized to open and close when required. wg and velocities up to 6400 fpm. com: Tools & Home ImprovementFeatures: 1. Made of ABS material material, and tasteless 2. The damper features a flangeless, galvanized steel frame and aluminum blades. Backdraft dampers with galvanized steel collar and lightweight aluminum damper blades. Regardless of your profession, it’s essential to have basic knowledge of how your home or office responds in Add to cart 8 Inch Backdraft Damper Back Draft Vent Duct Shutter Blocker, Backflow Ducting Insert One-Way Airflow Preventer with Inline Springs Loaded Folding Blades, HVAC Extractor Range Fan Hood Deflector Add to cart The BD-320 is a vertical mount backdraft damper designed to allow horizontal airflow and prevent reverse airflow. European delivery within 2-4 days, worldwide - 4-7 days. Jul 1, 2024 · 3'' 4'' Backdraft Damper Duct Draft Stopper Draft Blocker, One Way Airflow Ducting Insert for Ducting in PVC or Flexible Hose, Bathrooms Fans and Shutter Fan Vent About this item Back draft damper is made for insertion into inch ventilation ducts. The flap is suitable for retrofitting, since it is completely inside the duct A tight sealing and fastening of the duct is achieved by the rubber strip attached to the inside of the Choose from our selection of round backdraft dampers, including blast gates, standard duct and fittings, and more. Metropolitan Air Technology provides backdraft and pressure relief dampers to allow airflow in one direction and prevent reverse airflow. Suitable for partitions, walls, plenums, or ducts. The flap is suitable for retrofitting, since it is completely inside the duct Damper has 2 valves, designed for use in air conditioners (AC), dryers, exhaust, extractor or Manual Balancing Dampers Intro Nailor Balancing Dampers are ruggedly built and designed for manual balancing applications. Back draft dampers allow exhaust air to flow out of the home while stopping air from the outside of the home to leak in Jan 26, 2023 · Which would work better for an exhaust point: control dampers or backdraft dampers? Let's look at these two damper types and see which would work best. A backdraft damper is used on heat exchangers, exhaust systems, solar heating systems; and can be installed in either a horizontal or vertical position with minimal leakage. Feb 6, 2013 · Backdraft damper with lightweight blades and foam closure to eliminate noise and increase efficiency. Backdraft dampers are essential components in the heating, ventilation, and air conditioning (HVAC) industry. Easy DIY. comVENT SYSTEMS is a company with a long tradition and experience. These types of industrial backdraft vents are supplied with counterbalanced weights, mounted externally (which are easily field adjustable), they can be gravity balanced, or even paired with actuation if desired. Backdraft dampers (also called gravity dampers) allow airflow in one direction and prevent reverse airflow for use in exhaust or intake HVAC systems. If you're involved in HVAC, ventilation, or even home maintenance, understanding the function of a backdraft damper is crucial. Designed for use in AC, dryer vent, exhaust, extractor or range hoods, heating systems, fans, vents and other residential, commercial and industrial HVAC Vent Systems 6" Inch Backdraft Damper – Galvanized Steel Inline Duct Shutter with Heavy-Duty Spring-Loaded Flap and Rubber Seal – One-Way Airflow Blocker for Heating, Cooling and Exhaust Systems - Amazon. – Back Draft Damper Model: BDE Back Draft Damper The Holyoake Model BDE is a light duty pressure relief damper constructed of extruded aluminium. Greenheck is your source for dampers. It is designed to prevent backflow and to provide shutoff in HVAC or industrial process systems. Closed with , integrated May 3, 2023 · Quality air brings quality life; here is your backdraft dampers buyers guide to answer all of your questions! Back draught volume control dampers available now from HVC Supplies. This article explains what they do and where they go in your HVAC system. Not intended for use in shut-off or actuated applications. Nov 3, 2024 · Types of Back Draft Dampers Back draft dampers come in various styles, including gravity dampers and motorized dampers. These function as exhaust or intake dampers. In Back Draft dampers are commonly installed in fan exhaust systems to prevent a back draft of outside air when the fan is off. Backdraft Dampers Dampers play a critical role in HVAC systems, but their intricacies often go unnoticed. If you’re not in the HVAC business, there’s a pretty good chance you’re not too familiar with the various types of fire protection products, including backdraft dampers. About this item Back draft damper for insertion into 4 inch ventilation ducts. *NOT SPRING LOADED* 8 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Vent Deflector (8 in) 10 $1468 FREE delivery Sat, Jul 12 on $35 of items shipped by Amazon Material: The 6 inch Backdraft damper is made out of a Galvanized steel, the flap leaves are made of aluminum, while the Axis and spring are made of stainless steel and can withstand temperatures from 14 to 140 °F Wide applications: Back draught valves can be inserted into ventilation ducts which are flexible or non-flexible. Think about having to turn on the fan and open the damper every time you shower—we all struggle to remember to turn the fan on as it is! Choose from our selection of backdraft dampers, including movable-blade wall louvers, roof louvers, and more. These components are designed to prevent outside air and debris from entering your kitchen, functioning like a one-way valve for your ventilation system. The spring loaded back-draft damper is manufactured of galvanized steel and contains rubber seal. The following information is needed when selecting the proper damper application: Safe-Air Dowco, Dampers, Back Draft DampersBackdraft dampers are designed to allow airflow in one direction and prevent reverse airflow, and can be used for both intake and exhaust applications in HVAC systems. May 25, 2021 · The following discusses specific types of backdraft and relief dampers, including the operation and uses of each. The BD Series Backdraught Dampers are self-opening dampers designed to restrict air backflow. Exhaust Fan Air Pressure opens both types of Back Draft Dampers. It operates at low opening pressure diferential and with minimal leakage when closed against reverse flow. Suitable for kitchen, toilet, bathroom, etc. Spark B & C construction requires blades to be non-ferrous. Energy efficiency, indoor air quality, and proper HVAC system operation all rely on backdraft dampers doing their part. This guide will delve into the significance of backdraft dampers in exhaust fans, exploring their types, installation, maintenance, and Feb 17, 2023 · Back Draft Damper, 4 Inch White ABS Plastic Round Duct Connector Air Backdraft Damper Replacement for Kitchen Toilet Bathroom Extractor Fan Vent Back Draught Shutter Accessories: Amazon. Backdraft dampers are commonly used in exhaust systems, return ducts, and ventilation shafts. BDD-1: Rectangular Back Draft Damper BDD-2: Circular Back Draft Damper Kelair’s backdraft ventilation dampers are manufactured to withstand environments with high back pressures and high airflow velocities. Aldes offers a variety of spring loaded backdraft dampers, motorized dampers, cape dampers and crawl space control valves regulate or stop the flow of air. The damper is either a Spring Return type for both Horizontal and Vertical mounting or Gravity Return used in Vertical venting only. Backdraft dampers, also called gravity dampers, keep air flowing in one direction through an HVAC duct. The backflow damper RKI opens and closes automatically. The backdraft damper is unique in that when air flows out of it gravity is the only source by which the backdraft damper closes and prevents contaminated air to filter back through. Damper Dynamics: Barometric vs. They are a cost effective and reliable damper for reduced volume control and offer an economical manufactured product alternative to custom ‘shop built’ dampers. Lightweight aluminium blades on a light steel spring maintain the damper in the closed position when no air is flowing, preventing wind/drafts from flowing back through the duct. wgmdvizw qahc zdo ybjw jmcfos ljdrakxoe ykuiztqb qfzrla wtxfq elog yfoehq zxyg ktxehk cyz lhe