NUOENWEI Explosion-Proof Air Duct – Conductive Anti-Static Flexible Ventilation Hose for Hazardous Environments
The NUOENWEI Explosion-Proof Air Duct is a safety-critical ventilation solution designed for environments where static electricity poses a serious risk of ignition or explosion. The flexible hose is constructed from B-grade flame-retardant polyvinyl chloride (PVC) with abrasion-resistant strips and reinforced with high-carbon spring steel, offering exceptional strength and resistance to acids, tearing, corrosion, cold, heat, water, and flame.
The duct body is fully conductive, with two tinned copper braided wires at each end for easy grounding. These braided copper wires are integrated with the internal steel helix, creating multiple redundant conductive paths. The conductive fabric achieves a surface resistance of 2 × 10³ Ω, ensuring rapid charge dissipation to a safe level. Every meter of the hose includes an integrated hanging loop, making it easy to secure the duct in tunnels, mineshafts, or ceiling installations. The hose connects seamlessly to portable explosion-proof fans via belt or PP rope, and can be extended indefinitely by coupling multiple lengths.
This product is environmentally friendly – non-toxic, odorless, fiber-free, and dust-free. The seamless construction prevents air leakage and dust escape, ensuring efficient and clean operation.
NUOENWEI Explosion-Proof Air Duct
The NUOENWEI Explosion-Proof Air Duct is a high-performance conductive flexible ventilation hose engineered for safely extracting explosive dust, fumes, and gases in hazardous environments. Made from Class B flame-retardant PVC and reinforced with high-carbon spring steel, this duct provides exceptional conductivity (surface resistance 2×10³ Ω), static dissipation via tinned copper braids, and mechanical durability. Its lightweight, compressible design allows easy deployment in tunnels, mines, shipyards, and chemical plants where explosion protection is critical.
Unlike ordinary hoses, the NUOENWEI Explosion-Proof Air Duct is intrinsically conductive – the entire hose body dissipates static charge, while two tinned copper braids (mechanically bonded to the internal steel helix) provide multiple grounding paths. This ensures any electrostatic buildup from material flow or mechanical operation is safely discharged to ground, preventing ignition risks in ATEX or similar hazardous zones.
Related Parameters
| Parameter | Specification / Details |
|---|---|
| Brand | NUOENWEI |
| Product Name | Explosion-Proof Air Duct / Conductive Anti-Static Flexible Hose |
| Material | Class B flame-retardant PVC + high-carbon spring steel wire |
| Wall Thickness | 0.4 mm – 0.65 mm (depending on diameter) |
| Color | Black (standard) |
| Surface Resistance (Conductive Fabric) | 2 × 10³ Ω |
| Grounding | Two tinned copper braids (bonded to steel helix) – multiple redundant paths |
| Hanging / Support Loops | Integrated every ~1 meter |
| Compression Ratio | Extends to approx. 5× compressed length (stores to ~20% of extended length) |
| Standard Lengths | 5 m, 10 m (custom lengths available upon request) |
| Diameter Range (ID) | 4″, 5″, 6″, 8″, 10″, 12″, 14″, 16″, 18″, 20″, 24″, 28″, 32″, 36″, 40″, 48″, 52″, 59″ (metric: 100 mm – 1500 mm) |
| Operating Temperature | Standard: -15°C to +80°C (optional cold-resistant or high-temperature versions available) |
| Flame Rating | Class B (self-extinguishing, equivalent to UL94 V-0) |
| Resistance | Acid, alkali, tear, abrasion, corrosion, UV, ozone, water, salt spray |
| Toxicity / Purity | Non-toxic, fiber-free, dust-free, odorless |
| Leakage | Zero (seamless, non-porous construction) |
| Connection to Fan / System | Belt, PP rope, or band clamps (compatible with portable explosion-proof fans) |
| Certification | ISO9001, IEC 62631, AS/NZS 1530; ATEX/IECEx certified variants available on request |
Product Advantages
- Inherently Conductive & Explosion-Proof: The hose body is fully conductive, with two tinned copper braided wires at both ends for reliable grounding. Surface resistance of 2×10³ Ω ensures safe static charge dissipation, reducing explosion risks in volatile areas like mines or welding sites.
- Class B Flame-Retardant Material: Constructed with B-grade flame-retardant PVC, the duct meets stringent flame retardancy standards, significantly slowing combustion and enhancing evacuation and response time in case of a fire incident.
- Superior Durability: Reinforced with high-carbon spring steel and coated with wear-resistant strips, the hose boasts high strength and excellent resistance to acid, alkali, corrosion, tearing, and physical abrasion. Resistant to cold, heat, water, and flames, it ensures longevity and reliability in extreme conditions.
- Wide Temperature Range: Suitable for continuous use from -15°C to +80°C. Options for high-temperature or cold-resistant variants are available for more extreme conditions.
- Excellent Flexibility & Easy Installation: Highly flexible and retractable, it can bend freely (360° bend flexibility) and connect easily to fans and ports. Lightweight and portable, with integrated hand loops spaced approximately every 1 meter for simple fixing and positioning.
- Leak-Proof & Eco-Friendly: Seamless design prevents air leakage and dust egress. The material is non-toxic, odorless, and generates no loose fibers or particles, ensuring clean air transport and a safer worksite.
- Versatile Sizing: Available in diameters from 100mm to 1500mm (4″ to 59″), thickness of 0.4mm-0.65mm, and standard lengths of 5m or 10m. Custom sizes and extreme-temperature variants are supported.
- Quick Deployment: 1-meter spaced handles for instant fixing; extends to 10m+ lengths. Can be extended indefinitely by connecting multiple ducts.
Application Scenario
- The NUOENWEI Explosion-Proof Air Duct is ideal for multiple industrial environments where static electricity and hazardous conditions are concerns:
- Tunnels and Underground Mining: Provides safe ventilation by dissipating static charges in methane-rich or dust-laden atmospheres. Safe exhaust of methane/dust after blasting.
- Shipyards and Welding Zones: Spark-resistant fume extraction for welding operations.
- Chemical Plants and Laboratories: Corrosion-proof vapor removal and hazardous material handling.
- Server Rooms and Data Centers: Cooling and static-free airflow management.
- Municipal Pipeline Engineering: Emergency ventilation and fresh air supply.
- Firefighting and Smoke Extraction: Fireproof smoke evacuation ducts for emergency systems.
- Grain Silos and Coal Plants: Anti-static dust collection in explosive dust zones.
- Battery Rooms and Paint Booths: Exhaust ventilation for flammable vapor extraction.
- The duct can be conveniently connected to portable explosion-proof fans using belts or PP ropes, making it a versatile and essential tool for maintaining workplace safety in high-risk environments.
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