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Resistance factor and equivalent length tables.
TYPE OF DUCT
Concentric pipe Ø 60/100 length 1 m
90° bend concentric Ø 60/100
45° bend concentric Ø 60/100
Complete horizontal concentric
intake/exhaust terminal Ø 60/100
Horizontal concentric
intake/exhaust terminal Ø 60/100
Vertical concentric
intake/exhaust terminal Ø 60/100
Concentric pipe Ø 80/125 length 1 m
90° bend concentric Ø 80/125
45° bend concentric Ø 80/125
Complete vertical concentric
intake/exhaust terminal Ø 80/125
Vertical concentric
intake/exhaust terminal
Ø 80/125
Complete horizontal concentric
intake/exhaust terminal Ø 80/125
Horizontal concentric
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, 1 m (with or without insulation)
Complete intake terminal Ø 80, 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
IE
Equivalent
length in m of
Resistance
concentric pipe
factor
Ø 60/100
(R)
Intake and
m 1
exhaust 16,5
Intake and
m 1,3
exhaust 21
Intake and
m 1
exhaust 16,5
Intake and
m 2,8
exhaust 46
Intake and
m 1,9
exhaust 32
Intake and
m 2,5
exhaust 41,7
Intake and
m 0,4
exhaust 6
Intake and
m 0,5
exhaust 7,5
Intake and
m 0,4
exhaust 6
Intake and
m 2,0
exhaust 33
Intake and
m 1,6
exhaust 26,5
Intake and
m 2,3
exhaust 39
Intake and
m 2,0
exhaust 34
Intake and
m 0,8
exhaust 13
Intake and
m 0,1
exhaust 2
Intake
2,3
m 0,1
exhaust
3
m 0,2
Intake
5
m 0,3
Intake
3
m 0,2
exhaust
m 0,1
2,5
Intake
5
m 0,3
exhaust
6,5
m 0,4
Intake
3
m 0,2
exhaust
m 0,2
4
Intake and
m 0,5
exhaust 8,8
104
Equivalent
Equivalent
length in m of
length in m of
concentric pipe
concentric pipe
Ø 80/125
Intake
m 2,8
exhaust
Intake
m 3,5
exhaust
Intake
m 2,8
exhaust
Intake
m 7,6
exhaust
Intake
m 5,3
exhaust
Intake
m 7
exhaust
Intake
m 1,0
exhaust
Intake
m 1,3
exhaust
Intake
m 1,0
exhaust
Intake
m 5,5
exhaust
Intake
m 4,4
exhaust
Intake
m 6,5
exhaust
Intake
m 5,6
exhaust
Intake
m 2,2
exhaust
Intake
m 0,3
exhaust
Intake
m 0,4
exhaust
m 0,5
Intake
m 0,8
Intake
m 0,5
exhaust
m 0,4
Intake
m 0,8
exhaust
m 1,1
Intake
m 0,5
exhaust
m 0,6
Intake
m 1,5
exhaust
Ø 80
m 7,1
m 5,5
m 9,1
m 7,0
m 7,1
m 5,5
m 20
m 15
m 14
m 10,6
m 18
m 14
m 2,6
m 2,0
m 3,3
m 2,5
m 2,6
m 2,0
m 14,3
m 11,0
m 11,5
m 8,8
m 16,9
m 13
m 14,8
m 11,3
m 5,6
m 4,3
m 0,8
m 0,6
m 1,0
m 1,0
m 2,2
m 1,3
m 0,8
m 2,2
m 2,1
m 1,3
m 1,3
m 3,8
m 2,9
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