Operating Manual
PR-101131-0121 Version 180905
15 of 16
P
RESSURE AND TIGHTNESS TEST
After each service a pressure and tightness test of each coupling is mandatory. Test each half separately
before you connect both halves with the breaking pins. The following test parameters are in accordance with
EN12266 and ISO5208:
Shell tightness test:
1,5 x Working Pressure
stop time 1 min.
Seat tightness test:
6 bar +/- 1bar
stop time 15 s.
0,1 x Working Pressure
stop time 15 s.
Instead of water we recommend to make the tightness test with gas, e.g. N2. If water is used as testing
media, after testing all water must be removed from the couplings to avoid freezing under low temperature
service.
If a pressure test should be achieved for the coupling mounted in an assembly follow the respective test
instructions for the equipment but do not exceed our recommended maximum test pressure of the coupling
which you will find in the following table. If testing with higher pressure is necessary please ask our sales
department for a special test bolt kit.
DN
25
DN
50
DN
65
DN
80
DN
100
DN
125
DN
150
kN
bar
kN
bar
kN
bar
kN
bar
kN
bar
kN
bar
kN
bar
4
10
7
10
11
10
18
10
28
10
40
10
6
16
10
16
15
16
24
16
37
16
54
16
7
20
12
20
18
20
28
20
45
20
65
20
9
25
15
20
23
25
36
25
56
25
81
25
4,8
25
92
25
3
16
12
50
20
30
30
35
48
35
75
40
108
40
3,2
16
13
37,5
22
37,5
33
37,5
52
37,5
81
37,5
117
37,5
Table 8: Maximum Test Pressure depending on size and breaking force:
