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Non-insulated air ducts Polyvent 665-Comby series

Non-insulated air ducts Polyvent 665-Comby series

Flexible non-insulated air ducts with steel wire frame covered with aluminium foil and polyether.

Color scheme

White

Products in this series (1)

  • Polyvent 665-Comby

    Polyvent 665-Comby

Description
  • Flexible heavy-duty air duct from multilayer aluminium foil, polyether and PVC with high-carbon steel wire frame.
Features

Versus PVC foil air ducts:

  • High temperature resistance;
  • non-flammable internal layer, fire safety class M0 (up to 250 °С) or M1 (up to 150 °С).

Versus aluminium foil air ducts:

  • High rupture resistance;
  • better protection against outside mechanical impact;
  • airtight, expansion- and deformation resisting.
Recommended application
  • Applied in residential ventilation and air conditioning systems of living quarters, administrative and public premises.
Pressure loss diagram per 1 m stretched air duct

Calculation example:

  1. Select a curve that matches the air duct diameter [mm], 200 mm in this case.
  2. Find the intersection point of this line with the vertical line of the required air flow in m3/h, 500 m3/h in this case.
  3. The horizontal line that shows the pressure loss in Pa per 1 m straight air duct crosses this intersection point.
  4. Multiply pressure loss value (2.4 Pa/m at 20°С) by total air duct length to get the total pressure loss value. To calculate pressure loss in case of bends consider each bend as extra air duct meter.

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