NUOENWEI Flexible Hose for Exhaust | Heavy-Duty PVC Negative Pressure Ducting with Steel Wire Spiral (100–1500 mm)
Engineered for Negative Pressure Excellence
The NUOENWEI flexible hose for exhaust is not just another ducting tube – it is a precision-engineered solution for industrial ventilation challenges. The hose body is constructed from a specially compounded PVC material that remains flexible even at low temperatures while offering superior resistance to oils, acids, alkalis, and many solvents. This makes it ideal for exhausting corrosive fumes, dust-laden air, and hot gases (up to 80 °C continuous).
Reinforced Steel Wire Spiral – The helical steel wire provides crush-proof rigidity and maintains a constant internal cross-section under high vacuum conditions. Unlike fabric-reinforced hoses, the steel spiral ensures that the hose does not collapse or deform, guaranteeing uninterrupted airflow.
Protective Rubber Wear Strips – Each steel wire is externally covered with a black rubber strip. This ingenious design serves two purposes: it protects the wire from abrasion when the hose is dragged across rough floors or sharp edges, and it adds an extra layer of wear resistance at the points of highest friction. The result is a significantly extended service life in abrasive environments such as sawdust extraction, sandblasting exhaust, or metal shavings collection.
Optimized Wire Pitch – The standard 6 cm spacing between wire helixes provides the ideal balance between flexibility and vacuum resistance. For specialized applications, we offer custom pitches – tighter spacing for extreme vacuum duties, or wider spacing for maximum flexibility in tight installations.
Dimension Flexibility – With standard diameters from 100 mm (4 inches) up to 1500 mm (60 inches), the NUOENWEI exhaust hose serves small portable fans to massive stationary exhaust systems. Standard lengths are 5 m and 10 m, but we can produce any length to minimize joints and reduce installation costs.
Safety First – The material is self-extinguishing (flame-retardant) and meets industrial safety standards. It does not propagate fire, providing critical protection in high-risk environments.
NUOENWEI flexible hose for exhaust
The NUOENWEI brand stands for quality and precision in industrial ducting solutions. Our flexible hose for exhaust systems is specifically designed to handle continuous negative pressure environments where standard hoses fail. The unique construction – a steel wire spiral supporting a tough PVC wall, with the wire externally covered by black rubber strips – ensures that the hose maintains its round profile under vacuum, resists kinking, and withstands abrasive particulate flow. With a standard wire pitch of 6 cm (customizable upon request) and diameters spanning 100 mm to 1500 mm, this hose accommodates everything from small extraction points to large-scale central exhaust networks. Length options of 5 m and 10 m are stock items, while custom lengths are readily available. Built-in flame retardancy and excellent chemical resistance make it a safe choice for workshops, chemical plants, woodworking facilities, and marine environments.
Related Parameters
| Attribute | Specification |
|---|---|
| Brand | NUOENWEI |
| Product Type | Flexible Hose for Exhaust / Negative Pressure Ducting |
| Material | High-grade PVC (special compound) |
| Reinforcement | Steel wire spiral (galvanized or stainless steel option) |
| Wire Covering | Black rubber wear strips (external, over each wire) |
| Wire Pitch (standard) | 6 cm (customizable upon request) |
| Standard Diameters (ID) | 100 mm, 150 mm, 200 mm, 250 mm, 300 mm, 400 mm, 500 mm, 600 mm, 800 mm, 1000 mm, 1200 mm, 1500 mm |
| Standard Lengths | 5 m, 10 m (custom lengths available) |
| Flame Retardancy | Self-extinguishing (UL94 V-0 or equivalent) |
| Corrosion Resistance | Excellent against acids, alkalis, oils, and many solvents |
| Temperature Range | -20 °C to +80 °C (continuous) |
| Applications | Negative pressure ventilation, exhaust fume extraction, dust collection, marine engine rooms, chemical plants |
| Customization Options | Diameter, length, wire pitch, steel type (galvanized/stainless) |
Product Advantages
Premium PVC Compound Material – Engineered specifically for negative pressure ducting, the high-grade PVC material delivers outstanding resistance to oils, acids, alkalis, and a wide range of corrosive chemicals. It remains exceptionally flexible even in low-temperature environments and includes UV stabilizers for reliable outdoor service, ensuring the NUOENWEI flexible hose for exhaust maintains its integrity under continuous industrial stress.
Steel Wire Spiral Reinforcement – The embedded galvanized steel wire helix provides crush-proof rigidity that prevents the hose from collapsing or deforming under high-vacuum conditions. This structural reinforcement guarantees a constant internal cross-section, ensuring uninterrupted airflow, minimal pressure loss, and maximum extraction efficiency for your exhaust and ventilation systems.
Protective Black Rubber Wear Strips over Wire – Each external steel wire is fully covered by a durable black rubber strip. This unique design serves as an advanced abrasion barrier, protecting the metal core from friction damage when the hose is dragged across rough floors, sharp edges, or abrasive surfaces. It significantly extends the service life in harsh dust-laden or heavy-particle environments such as woodworking, grinding, and sandblasting exhaust.
Customizable Wire Pitch (Standard 6 cm) – The standard 6 cm spacing between spiral wires offers the ideal balance between flexibility and vacuum resistance. For specialized applications, we offer tailored pitches—tighter spacing for extreme negative pressure duties, or wider spacing for maximum bending ease in confined installations. This adaptability makes the NUOENWEI exhaust hose suitable for virtually any ducting layout.
Broad Diameter Range (100 mm – 1500 mm) – With standard inner diameters spanning from 4 inches up to 60 inches, our product line covers everything from portable fume extractors to massive central industrial exhaust networks. This extensive range allows you to standardize on one trusted brand across all your operational scales, simplifying procurement and inventory management.
Inherent Flame-Retardant Performance – Safety is paramount in exhaust applications. The PVC compound is self-extinguishing and meets stringent industrial fire safety standards. It does not propagate flames, providing a critical layer of protection in high-risk environments such as welding booths, paint spray rooms, chemical plants, and marine engine rooms where flammable vapors or sparks are present.
Superior Corrosion and Chemical Resistance – Unlike standard ducting hoses that degrade quickly when exposed to aggressive fumes, the NUOENWEI flexible hose for exhaust resists deterioration from acidic vapors, alkaline mists, solvents, and salt spray. This makes it the preferred choice for chemical processing facilities, electroplating lines, and offshore maritime applications where long-term reliability is non-negotiable.
Flexible Length Customization (5 m / 10 m Standard) – Stock lengths of 5 meters and 10 meters are readily available for quick deployment. However, we also manufacture custom lengths to your exact specifications, minimizing the need for multiple joints and couplers. Fewer connections mean reduced leakage points, lower installation labor costs, and a more reliable, airtight negative pressure system.
Easy On-Site Cutting and Installation – The hose can be effortlessly cut to size on-site using standard utility knives or basic cutting tools without fraying or unraveling. Its inherent flexibility allows for easy routing around obstructions, columns, and equipment, eliminating the need for expensive prefabricated elbows or rigid fittings and drastically reducing downtime during installation or maintenance.
Exceptional Long-Term Cost-Effectiveness – By combining abrasion-resistant rubber wear strips, corrosion-proof PVC, and robust steel reinforcement, this exhaust hose delivers a significantly longer replacement cycle compared to ordinary fabric-reinforced or pure rubber hoses. Reduced maintenance frequency, fewer part replacements, and minimized system downtime translate into substantial operational savings over the product's lifetime.
Application Scenario
The NUOENWEI flexible hose for exhaust is the go-to choice for professionals across multiple industries:
Industrial Ventilation & Fume Extraction
- Welding booths, soldering stations, laser cutting machines – remove toxic fumes and smoke efficiently.
- Chemical reaction vessels and storage tanks – exhaust corrosive vapors safely.
Dust Collection Systems
- Woodworking shops (sawdust, chips), metalworking (grinding dust, swarf), and food processing (flour, grain dust).
- The abrasion-resistant rubber strips protect against sharp particles.
Marine & Shipbuilding
- Engine room ventilation, bilge exhaust, and hold air exchange – resistant to salt spray and fuel oils.
Mining & Tunneling
- Negative pressure ventilation for underground operations – large diameters (up to 1500 mm) handle high air volumes.
Agriculture & Grain Handling
- Pneumatic conveying of grains, seeds, and feed – the smooth PVC interior reduces friction and clogging.
Temporary or Portable Exhaust
- Emergency smoke removal, construction site ventilation, and mobile generator exhaust – lightweight yet robust.
Paint Booths & Spray Rooms
- Explosion-proof extraction of solvent-laden air – flame-retardant property adds essential protection.
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