© 2022 VAF Air Ltd
VAF Air Ltd
VAF Low Temperature Flexible Duct
Result
Tear Strength
Warp 150N Weft 120N
Tensile Strength
Warp 1200N per 5cm Weft 1000N per 5cm
Stiffness
-20°C
Operating Temp.
-34°C to +65°C
Density
430 gm/m²
UV Resistance
Yes
Flammability Class
BS5867pt2 1980 Type B
Material: 450 D Tex Polyester PVC Coated Reinforcement: Nylon Beacon (210 Denier) Standard Length: 7.5m (25 feet) Available Diameters: 200mm (8”), 300mm (12”), 400mm (16”) - 200mm & 300mm diameter Duct is supplied with integral storage bag Easily compressed by 85% for convenient transportation and storage.
Our most popular fan, the VAF-300 can ventilate confined spaces with up to 5x 7.5m (25’) lengths of flexible duct attached. This allows our ventilator to be used in a diverse range of jobs. For example, underground contractors use long lengths of duct for purging underground tanks, tunnel ventilation etc…..Some jobs require in excess of 37.5m (125’) of duct. If more than 37.5m (125’) of duct is necessary on a job, use the VAF-300 as a booster. Simply run 22.5m (75’) of duct on one fan, attach the duct end to another fan and attach an additional 22.5m (75’) of duct. The total duct length is 45m (150’). The boosters can be continued in any length required. Run boosters in excess of 1,000 feet!

Using Flexible Duct with the VAF Series portable extractors

The addition of Flexible Ducting to a blower reduces the air flow that is delivered. The air flow is further reduced when the flexible ducting is bent. To get an idea of of how the air flow is reduced please study the Flow Rate charts. We would recommend that a suitable air flow meter is used to measure the flow rate before entering a confined space.
Actual Air Flow Rates VAF-200 110V
CFM
m³/hour
Free Air
1300
2208
7.5m (25ft) Straight
1100
1868
7.5m (25ft) 1 x 90° Bend
1050
1783
7.5m (25ft) 2 x 90° Bend
875
1486
15m (50ft) Straight
1000
1700
30m (100ft) Straight
950
1614
Actual Flow Rate readings taken at 23.5°C (74.4°F) ambient
Actual Air Flow Rates VAF-300 230V
CFM
m³/hour
Free Air
2500
4247
7.5m (25ft) Straight
2150
3652
7.5m (25ft) 1 x 90° Bend
1950
3313
7.5m (25ft) 2 x 90° Bend
1950
3313
15m (50ft) Straight
2100
3567
30m (100ft) Straight
1900
3228
Actual Flow Rate readings taken at 23.5°C (74.4°F) ambient
*NOTE - The Actual Flow Rate, differs from the blowers Air Flow Rating, as it is a measured air flow.
© 2022 VAF Air Ltd
VAF Air Ltd
VAF Low Temperature Flexible Duct
Result
Tear Strength
Warp 150N Weft 120N
Tensile Strength
Warp 1200N per 5cm Weft 1000N per 5cm
Stiffness
-20°C
Operating Temp.
-34°C to +65°C
Density
430 gm/m²
UV Resistance
Yes
Flammability Class
BS5867pt2 1980 Type B
Material: 450 D Tex Polyester PVC Coated Reinforcement: Nylon Beacon (210 Denier) Standard Length: 7.5m (25 feet) Available Diameters: 200mm (8”), 300mm (12”), 400mm (16”) *200mm & 300mm diameter Duct is supplied with integral storage bag Easily compressed by 85% for convenient transportation and storage.
Our most popular fan, the VAF-300 can ventilate confined spaces with up to 5x 7.5m (25’) lengths of flexible duct attached. This allows our ventilator to be used in a diverse range of jobs. For example, underground contractors use long lengths of duct for purging underground tanks, tunnel ventilation etc…..Some jobs require in excess of 37.5m (125’) of duct. If more than 37.5m (125’) of duct is necessary on a job, use the VAF-300 as a booster. Simply run 22.5m (75’) of duct on one fan, attach the duct end to another fan and attach an additional 22.5m (75’) of duct. The total duct length is 45m (150’). The boosters can be continued in any length required. Run boosters in excess of 1,000 feet!

Using Flexible Duct with the VAF Series

portable extractors

The addition of Flexible Ducting to a blower reduces the air flow that is delivered. The air flow is further reduced when the flexible ducting is bent. To get an idea of of how the air flow is reduced please study the Flow Rate charts. We would recommend that a suitable air flow meter is used to measure the flow rate before entering a confined space.
Actual Air Flow Rates VAF-200 110V
CFM
m³/hour
Free Air
1300
2208
7.5m (25ft) Straight
1100
1868
7.5m (25ft) 1 x 90° Bend
1050
1783
7.5m (25ft) 2 x 90° Bend
875
1486
15m (50ft) Straight
1000
1700
30m (100ft) Straight
950
1614
Actual Flow Rate readings taken at 23.5°C (74.4°F) ambient
Actual Air Flow Rates VAF-300 230V
CFM
m³/hour
Free Air
2500
4247
7.5m (25ft) Straight
2150
3652
7.5m (25ft) 1 x 90° Bend
1950
3313
7.5m (25ft) 2 x 90° Bend
1950
3313
15m (50ft) Straight
2100
3567
30m (100ft) Straight
1900
3228
Actual Flow Rate readings taken at 23.5°C (74.4°F) ambient
*NOTE - The Actual Flow Rate, differs from the blowers Air Flow Rating, as it is a measured air flow.
© 2022 VAF Air Ltd
VAF Air Ltd
VAF Low Temperature Flexible Duct
Result
Tear Strength
Warp 150N Weft 120N
Tensile Strength
Warp 1200N per 5cm Weft 1000N per 5cm
Stiffness
-20°C
Operating Temp.
-34°C to +65°C
Density
430 gm/m²
UV Resistance
Yes
Flammability Class
BS5867pt2 1980 Type B
Material: 450 D Tex Polyester PVC Coated Reinforcement: Nylon Beacon (210 Denier) Standard Length: 7.5m (25 feet) Available Diameters: 200mm (8”), 300mm (12”), 400mm (16”) - 200mm & 300mm diameter Duct is supplied with integral storage bag Easily compressed by 85% for convenient transportation and storage.
Our most popular fan, the VAF-300 can ventilate confined spaces with up to 5x 7.5m (25’) lengths of flexible duct attached. This allows our ventilator to be used in a diverse range of jobs. For example, underground contractors use long lengths of duct for purging underground tanks, tunnel ventilation etc…..Some jobs require in excess of 37.5m (125’) of duct. If more than 37.5m (125’) of duct is necessary on a job, use the VAF-300 as a booster. Simply run 22.5m (75’) of duct on one fan, attach the duct end to another fan and attach an additional 22.5m (75’) of duct. The total duct length is 45m (150’). The boosters can be continued in any length required. Run boosters in excess of 1,000 feet!

Using Flexible Duct with the VAF Series portable extractors

The addition of Flexible Ducting to a blower reduces the air flow that is delivered. The air flow is further reduced when the flexible ducting is bent. To get an idea of of how the air flow is reduced please study the Flow Rate charts. We would recommend that a suitable air flow meter is used to measure the flow rate before entering a confined space.
Actual Air Flow Rates VAF-200 110V
CFM
m³/hour
Free Air
1300
2208
7.5m (25ft) Straight
1100
1868
7.5m (25ft) 1 x 90° Bend
1050
1783
7.5m (25ft) 2 x 90° Bend
875
1486
15m (50ft) Straight
1000
1700
30m (100ft) Straight
950
1614
Actual Flow Rate readings taken at 23.5°C (74.4°F) ambient
Actual Air Flow Rates VAF-300 230V
CFM
m³/hour
Free Air
2500
4247
7.5m (25ft) Straight
2150
3652
7.5m (25ft) 1 x 90° Bend
1950
3313
7.5m (25ft) 2 x 90° Bend
1950
3313
15m (50ft) Straight
2100
3567
30m (100ft) Straight
1900
3228
Actual Flow Rate readings taken at 23.5°C (74.4°F) ambient
*NOTE - The Actual Flow Rate, differs from the blowers Air Flow Rating, as it is a measured air flow.