NUOENWEI PVC Insulated Flexible Duct – 4″ to 59″ Triple-Layer Thermal Air Duct for HVAC, Grain Coolers & Tent AC
The NUOENWEI PVC Insulated Flexible Duct is not just a simple air hose—it is a precisely engineered system for thermal management. Specifically designed to connect portable ventilators, air conditioners, grain coolers, and industrial equipment, this flexible duct transports conditioned air over distances with minimal energy loss.
Constructed through a unique triple-layer lamination process combined with an internal spiral wire reinforcement, the duct maintains its shape under both negative pressure (suction) and positive pressure (blowing) without collapsing or kinking. The hose is lightweight and portable, making it easy to deploy, relocate, and store when not in use. Certified under ISO9001 quality standards, every meter of NUOENWEI ducting is inspected for consistent quality and performance.
The product features a 10cm steel-free soft connector at both ends with tightening clamps, ensuring quick, leak-free attachment to standard flanged outlets or round duct adapters. This design allows the ducting to be compressed for storage and easily extended on-site.
With over a decade of experience in ventilation solutions, Foshan NUOENWEI Technology Ltd. has established long-term strategic partnerships with well-known brands in the insulated HVAC duct industry. ODM and OEM services are available for custom requirements.
NUOENWEI PVC Insulated Flexible Duct
The NUOENWEI PVC Insulated Flexible Duct is a professional-grade, high-performance insulated ducting system engineered for the efficient transportation of conditioned air in demanding environments. Featuring a unique triple-layer composite construction, this flexible duct minimizes heat loss, prevents condensation, and reduces energy consumption. Reinforced with helical spring steel wire and protected by an external PVC wear-resistant strip, it delivers exceptional durability, flexibility, and thermal performance. Available in diameters from 4 inches (100mm) to 59 inches (1500mm) and standard lengths of 3m or 10m, it is the ideal solution for grain storage cooling, outdoor tent air conditioning, portable AC systems, and specialty HVAC applications
Related Parameters
| Parameter | Specification |
|---|---|
| Brand | NUOENWEI |
| Product Name | PVC Insulated Flexible Duct (Triple-Layer) |
| Available Diameters (ID) | 4″ – 59″ (100mm – 1500mm) |
| Standard Lengths | 3m, 5m, 10m (Custom lengths available upon request) |
| Total Wall Thickness | 4mm (±0.5mm) |
| Outer Layer | 0.55mm PVC Reinforced Coated Fabric (Abrasion & Weather Resistant) |
| Middle Insulation Layer | 3mm Composite Thermal Insulation Foam (Closed-Cell) |
| Inner Layer | 0.4mm PVC Fabric with Smooth Finish (Reduces Air Resistance) |
| Reinforcement | Helical Spring Steel Wire (3.5mm diameter; spacing varies by duct size) |
| External Protection | PVC Wear-Resistant Strip Over Spiral Wire |
| End Connection | 10cm Soft Connector (Wire-Free) on Both Ends with Tightening Clamps |
| Temperature Range | -15°C to +80°C |
| Thermal Conductivity | ≤0.035 W/(m·K) |
| Standard Color | Yellow |
| Available Colors | Gray, White, Blue, Red, Black, Green, Orange (Custom colors available) |
| Certification | ISO9001 |
| Place of Origin | Guangdong, China |
| MOQ | 5 Meters |
| Supply Ability | 500,000 meters/year (Standard Duct) |
| ODM / OEM | Available |
Product Advantages
Superior Three-Layer Thermal Insulation
The 3mm composite insulation core delivers exceptional thermal retention with a thermal conductivity of ≤0.035 W/(m·K). This translates to less than 5% cold loss over standard runs, compared to over 30% loss with uninsulated ducts. The result is reduced compressor cycling, lower energy costs, and extended equipment life.
Military-Grade Durability
The 0.55mm PVC reinforced coating combined with the outer wear-resistant strip withstands punctures, UV radiation, and extreme temperatures. This construction delivers a significantly longer lifespan than standard vinyl ducts in outdoor environments—slashing replacement costs.
Engineered for Critical Sealing
The 10cm steel-free ends with stainless steel clamps create an airtight lock even at 2500 Pa pressure. This prevents mold-inducing leaks in grain storage applications and meets rigorous quality standards.
Exceptional Flexibility with Load-Bearing Strength
The helical spring steel wire reinforcement (3.5mm diameter) ensures the duct maintains its shape under both positive and negative pressure without collapsing or kinking. The duct can be compressed for storage and easily extended on-site.
Versatile Size and Color Options
Available in diameters from 4 inches to 59 inches (100mm to 1500mm) and standard lengths of 3m, 5m, or 10m. Custom lengths available upon request. Choose from eight colors—yellow (standard), gray, white, blue, red, black, green, or orange—to suit your application needs.
Lightweight and Portable
The duct is lightweight and easy to deploy, relocate, and store when not in use. Its flexibility makes it ideal for installations in tight or complex spaces.
ISO9001 Certified Quality
Every meter of NUOENWEI ducting is manufactured under strict ISO9001 quality standards and inspected for consistent quality and performance.
Application Scenario
Grain Storage & Agricultural Cooling
Used with grain cooling units (grain chillers) to preserve grain quality in silos and warehouses by efficiently delivering cooled air. The insulation layer prevents condensation that could damage stored grain.
Outdoor Tents & Temporary Shelters
Ideal for cooling large military tents, event tents, and temporary shelters with portable air conditioning units. The durable construction withstands outdoor conditions and UV exposure.
Portable HVAC Systems
Connects portable air conditioners, spot coolers, and ventilation fans to efficiently distribute conditioned air over distances. The lightweight design makes it easy to set up and relocate as needed.
Industrial Ventilation
Used in factories, manufacturing plants, and shipyards to efficiently remove fumes, dust, and airborne contaminants. The chemical-resistant PVC construction withstands harsh industrial environments.
Specialty Air Conditioning Applications
Works with special air conditioning units for commercial and industrial applications requiring efficient hot or cold air transportation. The wide temperature range (-15°C to +80°C) meets diverse cooling and heating needs.
Greenhouses & Environmental Control
Controls humidity and air circulation in agricultural and greenhouse environments where temperature management is crucial for plant health
Frequently Asked Questions
Contact person: Elaine Guo
Tel.: +8615875732388
E-mail: sales@fsnuowei.com
Add: No. 39 Xingjiao Road, Hecheng Street, Gaoming District, Foshan City, Guangdong Province,China