Blower duct specifications typically cover flexible, collapsible, or non-collapsible, ducting used for temporary ventilation, fume extraction, or HVAC applications. Standard industrial-grade blower ducts are designed for durability in harsh environments, such as manholes, tanks, construction sites, and mining operations.
Key Technical Specifications for Blower Ducting:
Material: Often high-density PVC-coated polyester, vinyl, or neoprene-coated materials, frequently yellow or orange for high visibility.
Reinforcement: Class 1 hard-drawn spring steel wire helix to ensure a non-collapsible design, allowing for both positive and negative pressure (suction/exhaust).
Diameter Range: Common sizes include 8", 12", 16", 20", and 26" (200mm to 650mm).
Temperature Rating: Typically designed to operate between -20°F and 180°F (-28.8°C to 82.2°C). Some specialized units go up to 250°F (121°C).
Connections: Reinforced, integrated, or quick-connect cuffs at both ends for attaching to blowers or connecting multiple ducts.
Flame Resistance: Often meets ASTM 227 and UL94V-0 standards.
Anti-static Options: Specially designed black, statically conductive, or anti-static ducting for explosion-proof blowers in hazardous, explosive environments.
Airflow: Designed for dual-direction flow with minimal friction loss.
Common Applications:
Confined Space Ventilation: Supplying fresh air or removing hazardous gases.
Industrial/Factory Fume Extraction: Removing chemical fumes and dust.
Construction/Mining: Tunnel and shaft air management.
Temporary HVAC: Portable heating or cooling for tents or events.
Key Considerations:
Weight: Generally lightweight for easy handling, with 8-inch, 25-foot ducts weighing around 12 lbs (5.4 kg).
Storage: Many come with built-in or separate storage bags (e.g., 8" and 12" sizes).
Maintenance: Regular inspection for tears or wear is required, especially in industrial environments.
