21
Start-up
Q
Expansion joints with tensioning are set in the factory to constructional length BL. After
installation, the tie rods must be frictionally connected to the flanges.
Q
Pressure and sealing integrity tests are only then to be carried out when fixed points
and guide bearings have been installed in an orderly and proper manner. Otherwise, the
expansion joint will elongate and is then non-usable.
Q
When high operating temperatures are involved, appropriate protection measures are to
be made on the customer´s end in order to avoid personal injury caused by contacts with
the hot surfaces.
Q
In order to ensure safe and reliable operation, expansion joints shall only be used within
the allowable pressure, temperature and movement limits.
Q
The maximal permissible operating pressure of rubber expansion joints stated in the data
sheets refers to a temperature of 20 °C. For higher temperatures the pressure must be redu-
ced (see table) as the strength of the bellows‘ materials diminishes with rising temperature.
Maximal permissible operating pressure (bar)
*short period (max. 100 hours)
Q
It is the responsibility of the user to provide for measures against incorrect and non-
purposeful use of expansion joints by means of corresponding instructional training and
supervision of the operating personnel as well as with operating instructions.
Usage
Q
Be particularly attentive to durability against flow media before using the expansion
joints (observe the durability list in cases of doubt in the catalogue).
Expansion joint
Rubber grade
Applications
colour coding
Orange
EPDM
Hot water, acids, lyes
Red
NBR
Oil
White
CIIR
Drinking
water
Typ AR: additional yellow stripe
Typ AS: additional blue stripe
Type series
Temperature
A, AG, B, R
AS, RS
AR
GR-SAE
E, G
C
W
°C
bar
bar
bar
bar
bar
bar
bar
20
16
16
25
16
10
4
10
2.5
30
16
16
25
16
10
4
10
2.5
40
16
16
25
16
10
4
10
2.5
50
16
16
25
16
10
4
10
2.5
60
15
16
24
16
9
.5
3.8
9.5
2.2
70
14
15
22
15
9
3.5
9
2
80
11
14
20
14
7
2.8
7
1.7
90
6
12
16
12
4
1.5
4
1
100
6
*
10
11
10
4
*
1.5*
4
*
1*
110
6
6
6
120
6
*
6
*
6
*
130
6
*
6
*
6
*
Summary of Contents for A Series
Page 2: ...2 ꔴ A ꔴ A 9 9 9 9 10 11 12 ...
Page 3: ...3 ꔴ B ꔴ M 3 3 3 3 2 3 3 FFP F1 F2 F3 ...
Page 4: ...4 ꔴ C ꔴ D ...
Page 76: ......