Resistance factor and equivalent length tables.
DUCT TYPE
Complete concentric horizontal
intake-exhaust terminal Ø 80/125
Complete concentric horizontal
intake-exhaust terminal Ø 80/125
Concentric adapter from Ø 60/100
to Ø 80/125 with condensate collector
Concentric adapter from
Ø 60/100 to Ø 80/125
Pipe Ø 80 length 1 m
(with or without insulation)
Complete intake terminal
Ø 80 length 1 m
(with or without insulation)
Intake terminal Ø 80
Exhaust terminal Ø 80
90°bend Ø 80
45° bend Ø 80
Split parallel Ø 80
from Ø 60/100 to Ø 80/80
Complete concentric vertical
intake-exhaust terminal Ø 60/100
Equivalent
length in metres of
Resistance
concentric pipe
factor
Ø 60/100
(R)
Intake
and
2.3 m
exhaust
39
Intake
and
2.0 m
exhaust
34
Intake
and
0.8 m
exhaust
13
Intake
and
0.1 m
exhaust
2
Intake
0.1 m
2.3
Exhaust
0.2 m
3
Intake
0.3 m
5
Intake
0.2 m
3
Exhaust
0.1 m
2.5
Intake
0.3 m
5
Exhaust
0.4 m
6.5
Intake
0.2 m
3
Exhaust
0.2 m
4
Intake
and
0.5 m
exhaust
8.8
Intake
and
2.5 m
exhaust
41.7
Equivalent
Equivalent
length in metres of
length
concentric pipe
in metres of pipe
Ø 80/125
Ø 80
Intake
16.9 m
6.5 m
Exhaust
13 m
Intake
14.8 m
5.6 m
Exhaust
11.3 m
Intake
5.6 m
2.2 m
Exhaust
4.3 m
Intake
0.8 m
0.3 m
Exhaust
0.6 m
Intake
0.4 m
1.0 m
Exhaust
0.5 m
1.0 m
Intake
0.8 m
2.2 m
Intake
0.5 m
1.3 m
Exhaust
0.4 m
0.8 m
Intake
0.8 m
2.2 m
Exhaust
1.1 m
2.1 m
Intake
0.5 m
1.3 m
Exhaust
0.6 m
1.3 m
Intake
3.8 m
1.5 m
Exhaust
2.9 m
Intake
18 m
7 m
Exhaust
14 m
ES
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