Open blade protrusion
Open blade protrusion [mm]
Nominal size DN
315
355
400
450
500
560
630
710
800
FKR-EU with spigot
x
-270
-250
-230
-200
-175
-145
-110
-70
-25
y
25
45
70
90
115
145
180
220
265
FKR-EU with flange
x
-240
-220
-200
-170
-145
-115
-80
-40
5
y
55
75
100
125
150
180
215
255
300
Fig. 109: Open blade protrusion
1
Spigot construction
2
Flange construction
A
Installation side
B
Operating side
Note
The movement of the damper blade must not be obstructed by any accessory. The minimum distance between
the tip of the open damper blade and any accessory must be at least 50 mm.
Accessories
Fire damper FKR-EU
138
Summary of Contents for FKR-EU
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