VENTS Polyvent 661

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.

Characteristics

Parameter	Polyvent 661	Measurement unit
Range of sizes	Ø 102; 127; 152	mm
Air duct base	PVC film (110 μm)	-
Air duct wire	steel spring, 0.8 mm thick	-
Operating temperature range	-18 ... +70	°С
Standard length	6	m
Available lengths (cutting)	6	m
Air speed	30	m/s
Maximum operating pressure	3000	Pa

Files archieve

Downloads

Dimensions

Characteristics

Parameter	Value	Measurement unit

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.