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
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