How to Integrate Nordfab® Quick-Fit® Ducting with Existing Flanged Duct Systems
Summary
Nordfab® Quick-Fit® (QF) ducting is designed for versatility and easy installation. With Angle Flange Adapters, QF ducting can be seamlessly connected to existing flanged duct systems, allowing businesses to upgrade their ductwork without a full replacement. Learn how to integrate, configure, and optimize your ducting for industrial, manufacturing, or food processing applications.
Table of Contents
What is Nordfab® Quick-Fit® Ducting?
Nordfab® Quick-Fit® (QF) ducting is well-known for versatility and ease of installation. These innovative ducting solutions can be seamlessly integrated with existing flanged duct systems using an Angle Flange Adapter. The ability to integrate Nordfab® ensures that businesses can upgrade their ductwork systems without the need for a complete overhaul, saving both time and resources.
How Does the Angle Flange Adapter Work?
Norfab Angle Flange Adapters are engineered for optimal performance and compatibility. They feature a QF rolled edge on one end, which allows for quick and secure connections with other QF components.
On the other end, a standard angle ring provides a robust interface with traditional flanged systems. This dual-ended design makes these adapters the perfect bridge between modern QF systems and legacy duct installations.

Flat Flange Customization Options
For applications requiring specific configurations, we also offer Flat Flange ends.
Flat Flange ends allow tailored solutions for manufacturing, food processing, and other industries. They ensure a perfect fit for specialized ducting setups where standard connections are not sufficient.
Nordfab® Duct Pipe Larger than 24"
• QF ducting is available in diameters of up to 24"
• For larger duct requirements, we carry Nordfab® flanged duct pipe in diameters of up to 40"
• Flanged duct pipe is constructed from sheet blanks that are 78.75" long and rolled with a longitudinal lock-form seam.
As seen above, an industry standard angle flange made from angle bar stock rolled on edge is placed on the end of the duct and secured using a Van Stone lip connection.
• The loose flange allows easy matchup to holes on existing flanges.
• The connection of two flanged pipes is illustrated in the example below.

Industrial Applications and Benefits
Our flanged duct pipes in sizes 26" to 40" are designed to handle high-volume air flow requirements in industrial settings. These larger pipes are ideal for applications such as dust collection in woodworking facilities, fume extraction in chemical plants, or ventilation in large manufacturing spaces.
The construction of these larger ducts prioritizes both strength and efficiency. The longitudinal lock-form seam provides excellent structural integrity, while the Van Stone lip connection ensures a secure and leak-resistant joint between the pipe and the flange. This design also allows for easy disassembly and cleaning, which is crucial for maintaining optimal system performance and complying with safety regulations.
For systems requiring a mix of pipe sizes, Nordfab® offers reducers and expanders that can smoothly transition between different diameters. This allows for the creation of complex ducting systems that can efficiently manage varying air flow requirements across different sections of a facility.
Installation and System Considerations
When installing large diameter ducting, it's important to consider factors such as support structures, pressure drop calculations, and system balancing. Our team of experts is available to provide guidance on system design and installation to ensure your large-scale ducting solution meets all performance and safety standards.
FAQs: Flanged Ducting
Can I connect QF ducting to my existing flanged system?
Yes, using an Angle Flange Adapter.
Are Flat Flange ends customizable?
Yes, they can be tailored to your hole pattern and ducting layout.
What diameters are available?
QF ducting up to 24", flanged ducting 26"–40".
Are large ducts easy to clean and maintain?
Yes, lock-form seams and Van Stone connections allow disassembly and cleaning.
Can reducers or expanders be used for complex systems?
Yes, they allow smooth transitions between different pipe diameters.
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