NUOENWEI Flexible Exhaust Pipe – PVC Negative Pressure Ventilation Hose with Steel Wire Spiral Reinforcement
The NUOENWEI flexible exhaust pipe is a heavy-duty industrial conduit designed for the most challenging ventilation and exhaust applications. Unlike ordinary air hoses or generic dryer vents, this duct is purpose-built to withstand continuous negative pressure (vacuum) without collapsing or kinking.
How It Works
A helical steel wire provides structural support, while the outer PVC layer offers excellent resistance to oils, acids, alkalis, and weather exposure. The steel wire is fully covered by a black rubber strip, which not only protects the wire from corrosion but also adds an extra layer of wear resistance when the duct drags on rough surfaces.
Why Choose Flexible Exhaust Ducting
Rigid metal ducts are heavy and difficult to install in tight spaces. The NUOENWEI PVC flexible exhaust pipe bends easily, allowing you to route exhaust lines around obstacles, machinery, or building structures — all while maintaining strong negative pressure airflow. The combination of a flexible PVC carcass and a closely spaced spiral wire prevents kinking and ensures maximum airflow efficiency, even in tight bends or long runs.
Customization Options
-
Wire pitch: Standard 6 cm, adjustable for higher or lower flexibility needs
-
Length: 5 m or 10 m standard; other lengths available on request
All NUOENWEI ducts are manufactured under strict quality control, ensuring consistent wall thickness, smooth internal surface for low friction loss, and flame-retardant properties that meet industrial safety standards.
NUOENWEI Flexible Exhaust Pipe
The NUOENWEI Flexible Exhaust Pipe is a professional-grade PVC ventilation hose engineered specifically for negative pressure exhaust systems. Constructed from high-quality flame-retardant PVC fabric and reinforced with a spring steel wire helix, this flexible exhaust duct delivers reliable performance in demanding industrial environments.
Related Parameters
| Parameter | Specification |
|---|---|
| Brand | NUOENWEI |
| Product Type | Flexible Exhaust Ventilation Duct / Negative Pressure Hose |
| Material | Flame-Retardant PVC Fabric (Polyvinyl Chloride) |
| Reinforcement | Spring Steel Wire Helix |
| Wire Coating | Abrasion-Resistant Black Rubber Strip |
| Standard Wire Spacing | 6 cm (center to center of spiral) – Customizable |
| Standard Diameters | 100mm, 150mm, 200mm, 250mm, 300mm, 400mm, 500mm, 600mm, 800mm, 1000mm, 1200mm, 1500mm |
| Diameter Range | 100 mm – 1500 mm (4″ – 59″) |
| Standard Lengths | 5 Meters, 10 Meters |
| Custom Lengths | Available upon request |
| Temperature Range | -20°C to +80°C (-4°F to +176°F) |
| Ventilation Type | Negative Pressure (Suction) & Exhaust |
| Flame Retardant | Yes (Self-extinguishing, UL94 V-0 equivalent) |
| Color | Standard: Gray (Custom colors for volume orders) |
| Place of Origin | Guangdong, China |
| Certification | ISO 9001 |
| Minimum Order Quantity | 5 Meters |
| ODM & OEM | Available |
| Supply Ability | Ordinary air duct: 500,000 meters/year; PCA hose: 200,000 meters/year |
| Payment Terms | T/T, Western Union, PayPal |
Product Advantages
1. Industrial-Grade Flame-Retardant PVC Material
The NUOENWEI flexible exhaust pipe is manufactured from a specialized PVC compound that is inherently flame retardant and self-extinguishing. This ensures compliance with strict safety regulations in mining, tunneling, and industrial environments while resisting the growth of mold, mildew, and chemical corrosion.
2. Steel Wire Spiral Reinforcement
The spring steel wire helix provides robust structural support that prevents pipe collapse under strong negative pressure and maintains a round cross-section. This reinforcement ensures consistent airflow even in vacuum conditions.
3. Wear-Resistant Rubber Strip Coating
Unlike standard flex hoses where bare wire is exposed to friction damage, the NUOENWEI design encases each structural steel spiral in a durable black rubber strip. This provides exceptional abrasion resistance when the duct is dragged across concrete floors, gravel, or tunnel walls, significantly extending service life.
4. Optimized 6 cm Wire Spacing
The spiral reinforcement is placed at a standard 6 cm pitch — a measurement engineered to provide the ideal balance between full flexibility and rigid structural support. This spacing prevents the duct from kinking while maintaining excellent bendability.
5. Wide Diameter Range (100mm – 1500mm)
One solution works for small fume extractors up to large-scale industrial exhaust systems. With 12 standard diameter options and custom sizes available, the NUOENWEI flexible exhaust pipe adapts to virtually any exhaust application.
6. Corrosion and Chemical Resistance
The PVC construction offers excellent resistance to oils, acids, alkalis, and chemicals. This makes the NUOENWEI flexible exhaust pipe suitable for handling corrosive gases and substances in harsh industrial environments.
7. Custom Lengths and Sizes
Standard lengths of 5 m or 10 m reduce the need for couplings and simplify installation. Custom lengths are available for specific project requirements, minimizing waste and ensuring a perfect fit.
8. Smooth Internal Surface for Low Friction Loss
The smooth bore of the NUOENWEI flexible exhaust pipe minimizes air friction and makes it easy to clean. This ensures efficient airflow and reduced energy consumption in ventilation systems.
9. Lightweight and Easy to Install
Despite its heavy-duty construction, the NUOENWEI flexible exhaust pipe is lightweight and easy to handle, reducing installation time and labor costs.
10. ODM & OEM Capabilities
With ISO 9001 certification and extensive manufacturing capacity, NUOENWEI offers ODM and OEM services for customized flexible exhaust pipe solutions.
Application Scenario
The NUOENWEI flexible exhaust pipe is designed for a wide range of industrial and commercial applications where reliable negative pressure ventilation and exhaust are required.
1. Industrial Exhaust Systems
Ideal for removing exhaust gases, fumes, and airborne particulates from industrial workshops, manufacturing facilities, and processing plants. The flame-retardant and corrosion-resistant properties make it suitable for handling hazardous emissions.
2. Fume Extraction
Perfect for welding fume extraction, soldering stations, and chemical fume hoods. The NUOENWEI flexible exhaust pipe efficiently removes harmful gases and fumes, protecting worker health and maintaining air quality.
3. Dust Collection Systems
Used in processing machinery such as milling machines, lathes, and grinders to collect dust and maintain a clean working environment. The smooth internal surface minimizes clogging and makes cleaning easy.
4. Mining and Tunneling Ventilation
Specifically designed to withstand the rigorous conditions of mining and tunneling operations. The abrasion-resistant rubber strip coating protects the duct when dragged across rough tunnel walls and floors.
5. Shipbuilding and Marine Ventilation
Engineered for marine negative pressure ventilation systems in ship engine rooms and confined spaces. Corrosion-resistant construction ensures long-term performance in saltwater environments.
6. HVAC and Air Handling Systems
Used in heating, ventilation, and air conditioning systems for efficient air transfer and temperature regulation. The flexible design allows easy routing around obstacles and through tight spaces.
7. Mechanical Equipment Cooling
Discharges hot air generated during machine operation, helping maintain appropriate working temperatures and prolonging equipment service life.
8. Confined Space Ventilation
Provides reliable air exchange in confined spaces such as tanks, vessels, and underground facilities. The negative pressure capability ensures effective extraction of stale air and contaminants.
9. Automotive and Painting Booth Exhaust
Suitable for exhaust extraction in automotive workshops and painting booths where flammable fumes and vapors need to be safely removed.
10. Computer Room and Data Center Ventilation
Maintains optimal airflow and temperature control in computer rooms and data centers equipped with multiple pieces of mechanical equipment.
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