TC · Edition 08.17
34
Function
3 .3 Test volume V
P
for TC 1, TC 2, TC 3, TC 4
Test volume V
P
is calculated from the valve volume V
V
,
added to the volume of the pipe V
R
for each additional
metre in length L.
L
V
P
= V
V
+ L
x
V
R
V
P
V1
V2
The tightness control TC requires a minimum start rate
in order to carry out tightness tests on slow opening
valves, see page 38 (Project planning information).
Valves
Valve
volume VV
[l]
Nominal size
DN
Pipe volume VR
[l/m]
VG 10
0.01
10
0.1
VG 15
0.07
15
0.2
VG 20
0.12
20
0.3
VG 25
0.2
25
0.5
VG 40/VK 40
0.7
40
1.3
VG 50/VK 50
1.2
50
2
VG 65/VK 65
2
65
3.3
VG 80/VK 80
4
80
5
VG 100/VK 100
8.3
100
7.9
VK 125
13.6
125
12.3
VK 150
20
150
17.7
VK 200
42
200
31.4
VK 250
66
250
49
VAS 1
0.08
VAS 2
0.32
VAS 3
0.68
VAS 6
1.37
VAS 7
2.04
VAS 8
3.34
VAS 9
5.41
VCS 1
0.05
VCS 2
0.18
VCS 3
0.39
VCS 6
1.11
VCS 7
1.40
VCS 8
2.82
VCS 9
4.34