NUOENWEI Conductive Explosion-Proof Duct – Flexible Anti-Static Ventilation Hose for Hazardous Environments
The NUOENWEI Conductive Explosion-Proof Duct is a high-performance flexible ventilation hose engineered for safely extracting explosive dust, fumes, and gases in hazardous environments. Made from 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.
5.0
Place of Origin:
Guangdong, China
Minimum order quantity:
5 meters
Supply Ability:
Ordinary air duct 500000 meters per year，PCA hose 200000 meters per year
Packing:
Pack according to custom length
Delivery time:
Please check with us before placing order
Transaction mode:
T/T，Western Union, Paypal
ODM & OEM:
Available
Certification:
ISO9001，IEC 62631，AS/NZS 1530
design customization
Please fill out the form below to request a quote or to request more information about us. Please be sure to upload customized requirement documents or pictures, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
Please fill out the form below to request a quote or to request more information about us. please be as detailed as possible in your message, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
NUOENWEI Conductive explosion-proof duct
The NUOENWEI Conductive Explosion-Proof Duct sets a new standard for safety and performance in explosive or static-sensitive ventilation applications. Unlike ordinary hoses, this 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 | Conductive Explosion-Proof Duct / 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 (sewn or molded loops) |
| 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 |
| 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 – safe for food-adjacent & clean environments |
| Leakage | Zero (seamless, non-porous construction) |
| Connection to Fan / System | Belt, PP rope, or band clamps (compatible with portable explosion-proof fans) |
| Certification (Optional) | Technical declaration of conductivity; ATEX/IECEx certified variants available on request |
| Weight | Lightweight – depends on diameter & length (approx. 1.2–3.5 kg per meter for mid diameters) |
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Product Advantages
- Intrinsically conductive body (surface resistance 2×10³ Ω) – Prevents static charge accumulation – eliminates spark risk in explosive atmospheres
- Two tinned copper grounding braids mechanically bonded to steel helix – Dual redundant grounding paths; easy to connect to earth terminals
- Class B flame-retardant PVC cover (0.4–0.65mm thick) – Self-extinguishing; complies with fire safety regulations for mines & tunnels
- High-carbon spring steel helix – Maintains round cross-section under vacuum/pressure; crush-resistant yet flexible
- Compressible & bendable design – Reduces storage space by 80%; fits around obstacles without kinking
- Integrated hanging loops every ~1m – Quick securement to structures – no extra straps needed
- Seamless, non-porous construction – Zero air leakage, no dust/fiber shedding, odorless – ideal for clean or toxic environments
- Wide chemical & weather resistance – Withstands acids, alkalis, oils, ozone, UV, and salt spray
- Temperature range -15°C to +80°C (custom -40°C to +150°C available) – Reliable performance from cold storage to hot exhaust
- Diameter range 4″–59″ (100–1500mm) – Fits any fan or ducting system
- Lightweight & portable – One person can deploy 10m of 12″ duct easily
- Endless extension capability – Join multiple sections for long-distance ventilation
Application Scenario
The NUOENWEI Conductive Explosion-Proof Duct is essential wherever flammable dust, vapor, or gas may be present. Typical installations include:
- Mining & Tunneling – Ventilation of blasting fumes, methane dilution, dust extraction
- Underground Parking & Basements – Car exhaust fume removal, fresh air supply
- Chemical & Petrochemical Plants – Explosive gas/vapor capture, tank purging
- Pharmaceutical & Paint/Coating Facilities – Solvent vapor & combustible powder extraction
- Oil & Gas Refineries – Flammable gas ventilation, confined space entry
- Shipbuilding & Repair (Shipyards) – Welding fume extraction in holds/tanks
- Laboratories & R&D Centers – Fume hood exhaust for volatile chemicals
- Data Centers & Electrical Rooms – Static-safe cooling or smoke purge
- Municipal Utility Tunnels – Sewer gas ventilation, maintenance safety
- Fire & Rescue Operations – Positive pressure ventilation in burning structures (explosive atmospheres)
- Welding Shops – Spark-laden fume removal
- Grain Elevators & Food Processing – Combustible dust (flour, sugar, starch) extraction
- Battery Manufacturing & Recycling – Hydrogen & electrolyte vapor exhaust
✅ Works seamlessly with portable explosion-proof fans – simply attach using belt or PP rope (available separately).
Frequently Asked Questions
1
What makes the NUOENWEI duct “explosion-proof” and conductive?
The duct body is manufactured from conductive PVC with a surface resistance of just 2×10³ Ω (well below the antistatic threshold of 10⁶ Ω). Additionally, two tinned copper braids are mechanically crimped to the internal steel helix – providing multiple low-resistance paths to ground. When properly grounded, the duct cannot accumulate static charge, eliminating the spark ignition risk in explosive atmospheres.
2
Do I need to connect both copper braids to ground?
For maximum safety in Zone 0/1/2 or Class I/II Division 1 environments, we recommend grounding both braids.
3
Can I use this duct for hot exhaust gases above 80°C?
The standard version handles -15°C to +80°C. For high-temperature applications (e.g., welding fume up to 150°C), please order our NUOENWEI High-Temp Conductive Duct (silicone-coated, same conductive properties). For cryogenic conditions down to -40°C, specify the low-temp version.
4
How do I connect the duct to my fan or system?
The duct ends are raw (no pre-attached connectors). Use a metal band clamp, hose clamp, or simply secure with the included PP rope or a belt. For permanent installations, we offer custom flanged ends.
5
Is the duct resistant to chemicals like acids or solvents?
Yes, the PVC compound resists many inorganic acids, alkalis, salt solutions, and oils. However, avoid continuous contact with strong organic solvents (acetone, benzene, MEK). Contact our engineers for a chemical compatibility chart.
6
How do I hang or support the duct in a tunnel?
Every meter along the duct, you will find an integrated loop or grommet. Simply hook or tie the loop to a cable, rope, or beam. No need for additional straps.
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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