Non-insulated air ducts of Polyvent 661 series

Description

DESCRIPTION	FEATURES
Flexible PVC air duct with spiral high-carbon steel wire frame.	Low pressure loss due to increased wall rigidity. Long service life. Heavy-flammable, flame-retarding, self-extinguishing.
RECOMMENDED APPLICATION
Applied in residential and commercial ventilation systems. Recommended for use in office premises, trade and recreational buildings, etc.

Modifications

Modification name

Polyvent 661

Downloads

Colour range

White

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Packing


Cardboard box		Unit coloured packing		Net

Order code

Polyvent 661

length

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 661 series