NUOENWEI High-pressure Flexible Duct Transition – Custom Eccentric Rectangular-to-Rectangular

Custom Geometry, Not a Compromise Fit. This is a non-standard transition built to your mechanical drawings. Dimensions, flange sizes, offset angles, and bolt-hole patterns are matched to the actual equipment interface, so the installer is not forced to bridge a gap with sealant or field modification. For eccentric rectangular-to-rectangular connections, the offset is fabricated into the transition body itself.

High-Pressure Sealing Without a Rigid Skeleton. The absence of an internal rigid frame is intentional. The flexible wall moves with pressure fluctuations and vibration rather than resisting them, which reduces seam stress. High-frequency welding or reinforced industrial stitching, combined with leak-proof taping, keeps air loss controlled under high positive and negative pressure conditions.

Wear-Resistant Fabric for Real Industrial Environments. The coated fabric is selected for high-tensile strength and abrasion resistance, making it suitable for applications where dragging, scraping, and outdoor weathering are part of normal use. Dark green is the standard color; yellow, blue, black, and grey are available for site visibility or brand matching.

Safety Options for Sensitive Environments. Flame-retardant material to UL94-V0 / B1 grade and anti-static surface treatment are available for airport GSE, dust collection, and other environments where static discharge or fire propagation is a concern. UV resistance supports outdoor installation.

Vibration Isolation and Thermal Displacement Compensation. Because the transition is flexible, it interrupts the mechanical path between the blower and the duct. This reduces vibration transfer into rigid ductwork and allows the assembly to accommodate thermal expansion and contraction without tearing at the flanges.

Airport Preconditioned Air (PCA) Units. In PCA ground support systems, the transition connects the blower outlet, filtration segment, or PCA duct to the aircraft inlet or to rigid duct sections where the interfaces are not aligned. The flexible body absorbs the vibration and pressure pulses generated by the PCA unit, while the custom flange pattern matches the specific GSE connector. NUOENWEI PCA-related flexible components are used in airport ground air conditioning ducting, including transition and reducer configurations.

Industrial Centrifugal Blower Inlets and Outlets. Blower outlets rarely align perfectly with downstream ductwork. An eccentric rectangular-to-rectangular flexible transition bridges the offset without introducing the turbulence and pressure loss associated with a fabricated metal offset. The flexible wall also prevents blower vibration from being transmitted into the plant duct system.

Factory HVAC Misaligned Duct Bridging. In retrofit or expansion projects, new equipment often does not line up with existing rectangular duct runs. A custom flexible transition can be fabricated to absorb the vertical and lateral offset in a single fitting, reducing the number of field-fabricated joints and potential leak points.

Dust Collection and Vibration Isolation Systems. Dust collection ductwork is subject to fan-induced vibration and pressure fluctuation. A flexible transition between the fan and the main duct isolates that vibration and accommodates movement without cracking or fatiguing at the connection. Anti-static material options are relevant where combustible dust is present.