6
5
5
5
3
2
1
20
30
50 70
7
200
250
300 350 400
500
600 700 800
1000 1200
1500
Height H [mm]
1
Pressure drop p [Pa]
S
3
4
8
10
12
2
Flow velocity
v
[m/s]
A
200
250
300
350
400
800
500
600
Width B [mm]
200
250
300
350
400
500
600
700
800
Height H [mm]
Volume flow
V [m³/h]
225
275
200
300
400
600
800
1000
2000
3000
4000
6000
8000
10000
20000
30000 40000
50000
150
900
1000
900
1000
o
o
o
0
5
0
40ooo
30ooo
20ooo
10ooo
0
2500
3000
2000
1000
1500
500
]a
P[
kc
ur
ds
bei
rt
e
B
1400
1300
m
m
00
51
=
B
1200
Metal damper blade
B
=
150
0
mm
1400
v
>
12
m/s
A
Volume flow [m³/h]
v
>
12
m/s
A
Operating pressure
User Manual 5.0-2 (2016-10)
8
Subject to change
Series FK120
FK90 fire dampers
Dimensioning (1) Pressure drop with ventilation duct connection on both sides
FK90 fire dampers can be used in the area of the nomograms. With large dimensions, restrictions
should be taken into account depending on operating pressure and volume flow.
Example: At an operating pressure of 1500 Pa and a width of 1400 mm, the permissible volume flow is 26475 m³/h. This may increase if
the width is smaller or if the damper blade has a metal cover, or if an electric drive version is being used.
