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Table for flange-connecting dimensions according to EN 1092, PN 10 with torques for
C
flange connections with PTFE edge flanges
srews
quantity
Legend
Pipeline
Fixed point
Guide bearing
A
Installation Instructions for Axial and Universal Expansion
Joints (Type P-1, Ai-1) for Compensating Changes of Length
Unrestrained PTFE expansion joints can be used for combining (overlapping) axial, la-
teral, and angular movements. Mind the reduction of individual movements! In case of
doubt, consult the manufacturer.
Make sure the fixed points are dimensioned sufficiently. The fixed points must bear the
force F
which results from the axial compression force (F
FP
adjustment force (F
Not more than one expansion joint may be installed between two fixed points.
If there are several axial expansion joints, the pipe routing must be divided by intermedi-
ate fixed points.
The pipeline with axial expansion joints must be guided through bearings precisely. Gui-
de bearings must be placed on both sides of the expansion joint. A fixed point replaces
a guide bearing (illus.
Internal guiding pipes are not suitable as pipe guiding devices.
Illus.
Arrangement of fixed points and guide bearings -
L
3 x DN, L
1
2
Illus
Diagram guide-bearing distance (L
0-18 guide-bearing distance L
Installation Instructions for Lateral Expansion Joints (Type P-2,
Type P-4 and Type Ai-2) for Compensating Lateral Movements
Lateral expansion joints need light fixed points on both sides. They must absorb the
adjustment forces of the expansion joints as well as the friction at the joints and pipe-
guiding devices.
Only fasten the fixed points of the pipeline after the expansion joint has been mounted
(after pulling the flange screws tight).
Not more than one compensating system may be installed between two fixed points.
Suitable pipe-guiding devices must be installed at the compensating systems to absorb
the weight.
Lateral expansion joints may be pre-tensioned. Normally, they are pre-tensioned by half
the movement listed in the dimension diagrams.
thread
) and the frictional forces of the guide bearings (F
2
).
= 0,5 · L
, L
see illus.
3
3
[m] (approximate values), 0-250 nominal width.
3
torque
.
) PN 6, PN 10, PN 16 -
3
10
Axial expansion joint
Lateral expansion joint
) plus the expansion-joint
1
) (illus.
3
).
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