Non-insulated air ducts of Polyvent 665-Comby series

Description

DESCRIPTION

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

RECOMMENDED APPLICATION

Applied in residential ventilation and air conditioning systems of living quarters, administrative and public premises.

FEATURES

Versus PVC foil air ducts:

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

Versus aluminium foil air ducts:

Modifications

Modification name

Polyvent 665-Comby

Downloads

Colour range

White

(_)

Packing


Cardboard box		Unit coloured packing		Net

Order code

Accessories

Diffusers and air disk valves

Grilles and hoods

Pressure loss diagram

PRESSURE LOSS DIAGRAM PER 1 M STRETCHED AIR DUCT

Calculation example

Select a curve that matches the air duct diameter [mm], 200 mm in this case.
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.
The horizontal line that shows the pressure loss in Pa per 1 m straight air duct crosses this intersection point.
Multiply pressure loss value (2.4 Pa/m at 20 °C) 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.

VENTS Polyvent 665-Comby series