Technical data

12
Compressed Air Applications Manual | Selection of material and pipe system
The following diagram shows the applica-
tion limits of the material recommended
by us.
The service life of the PB systems was
calculated to be 25 years, including a
safety factor of 1.6.
Pressure/temperature limits and service life of polybutene pipes
PB
-20 -10 0
2
4
6
8
10
12
14
16
18
20
20
40
Temperature °C
permissible operating temp. (bar)
60 80 100
The application limits were determined
on the basis of the corresponding endur-
ance diagrams for the different pipe
materials.
Polybutene (PB) was assessed accord-
ing to pipe series S5 conforming to
DIN 16968/16969. This results in the
following pipe dimensions:
d 16 x 2.2 d 50 x 4.6
d 20 x 2.8 d 63 x 5.8
d 25 x 2.3 d 75 x 6.8
d 32 x 2.9 d 90 x 8.2
d 40 x 3.7 d 110 x 10.0
For further calculations of the effective
safety factor in relation to the actual ope-
rating pressure see page 14.