NUOENWEI Exhaust Ventilation Duct | PVC Negative Pressure Hose with Steel Wire Helix
The NUOENWEI Exhaust Ventilation Duct is a premium, engineered solution for demanding negative pressure ventilation and fume extraction applications. Constructed from high-grade flame-retardant PVC and reinforced with a robust steel wire helix, this ducting is specifically designed to withstand the rigorous conditions of mining, tunneling, industrial workshops, and confined space ventilation.
Unlike standard ducting, the NUOENWEI design features an external black rubber strip coating over the steel wire. This unique construction provides superior abrasion resistance when the hose is dragged across rough surfaces such as concrete floors or tunnel walls, significantly extending the operational lifespan of the duct. Whether you are managing exhaust gases, dust particulates, or general air movement, the NUOENWEI duct maintains structural integrity under vacuum pressure without collapsing.
The Professional's Choice for Negative Pressure Systems
When air quality and durability are non-negotiable, trust NUOENWEI. This exhaust ventilation duct is not a generic dryer vent; it is a heavy-duty industrial conduit designed for the most challenging environments. 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.
Related Parameters
| Parameter | Specification |
|---|---|
| Brand | NUOENWEI |
| Product Type | Flexible Exhaust Ventilation Duct / Negative Pressure Hose |
| Material | Flame Retardant PVC Fabric |
| Reinforcement | Spring Steel Wire Helix (Encased in Abrasion-Resistant Black Rubber Strip) |
| Wire Spacing | Standard: 6 cm (Customizable upon request) |
| Standard Diameters | 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 Meters / 10 Meters (Custom lengths available) |
| Temperature Range | -20°C to +80°C (Intermittent) |
| Ventilation Type | Negative Pressure (Suction) & Exhaust |
| Color | Standard: Yellow/Grey (Custom colors for volume orders) |
Product Advantages
Industrial-Grade Flame Retardant PVC Fabric
The duct is manufactured from a specialized PVC compound that is inherently flame retardant and anti-static. This ensures compliance with strict safety regulations in mining, tunneling, and industrial environments while resisting the growth of mold, mildew, and chemical corrosion.
Wear-Resistant Steel Wire Helix with External Black Rubber Strip
Unlike standard flex hoses where the bare wire is exposed to friction damage, the NUOENWEI design encases the 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.
Optimized 6 cm Wire Spacing for Negative Pressure Stability
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 collapsing or kinking under high vacuum (suction) loads, ensuring consistent airflow in exhaust applications.
Broad Diameter Range from 100 mm to 1500 mm
NUOENWEI offers a comprehensive size inventory to accommodate any ventilation setup, from small-diameter fume extraction arms in welding bays to large-scale main ducts for tunnel boring machines and mine shafts.
Convenient Standard Lengths of 5 and 10 Meters
Supplied in manageable 5-meter and 10-meter sections, the ducting is easy to transport, deploy, and connect on-site. These standard lengths minimize waste and simplify inventory management for large-scale projects.
Fully Customizable Dimensions and Specifications
As a manufacturer, NUOENWEI can tailor every aspect of the exhaust ventilation duct to meet exact project requirements. Custom diameters, non-standard cut lengths, alternative wire spacing, and specific color coding are all available upon request.
Superior Corrosion Resistance for Harsh Environments
The PVC material is formulated to withstand prolonged exposure to moisture, acidic fumes, and chemical vapors commonly found in wastewater treatment plants, shipbuilding yards, and remediation sites. This resistance prevents material degradation and maintains duct integrity over time.
Designed Specifically for Exhaust and Negative Pressure Ventilation
While versatile enough for general air movement, this duct is purpose-built for suction applications. The combination of material thickness and wire support ensures the hose retains its full internal diameter even when pulling heavy particulate-laden air or fumes away from the work area.
Application Scenario
The NUOENWEI Exhaust Ventilation Duct is engineered for environments where reliable extraction of contaminated air is mission-critical. Common applications include:
- Mining & Tunneling: Primary and auxiliary forced/Exhaust ventilation systems underground. The anti-static and flame-retardant properties are essential for MSHA and OSHA compliance.
- Industrial Welding & Grinding: Extraction of welding smoke, grinding dust, and solvent fumes directly from the source.
- Confined Space Entry: Manhole and tank ventilation blower hose. The negative pressure rating ensures the duct does not collapse and restrict air to the worker.
- Construction & Remediation: Asbestos abatement, mold remediation, and general construction dust control.
- Marine & Shipbuilding: Ventilating engine rooms and fuel tank compartments during maintenance.
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