Honeywell Krom Schroder BCU 580 Technical Information page 34

Valve proving system
Leakage rate
The BCU tightness test ensures that the leakage rate Q
is < 0.1% of the maximum flow rate Q
Q
(N)
Leakage rate QL [l/h] =
Test volume V
p1
Test volume V is calculated from the valve volume V
p1
added to the volume of the pipe V
metre in length L.
L
Valves
Type Volume V
VAS 1
VAS 2
VAS 3
VAS 6
VAS 7
VAS 8
VAS 9
VG 10
VG 15
VG 20
VG 25
VG 40/VK 40
BCU 580 · Edition 11.15l
.
(N)max.
max. [m 3 /h] x 1000 [l/h]
1000 x 1 [m 3 /h]
for each additional
R
V = V + L V
x
p1 V R
Pipework
Volume per metre
[l] DN
V
V
0.25 10
0.82 15
1.8 20
1.1 25
1.4 40
2.3 50
4.3 65
0.01 80
0.07 100
0.12 125
0.2 150
0.7 200
VG 50/VK 50
VG 65/VK 65
L
VG 80/VK 80
VK 100
VK 125
VK 150
VK 200
VK 250
The measurement time required for the test volume V
,
V
must be set on the basis of the calculation using pa-
rameter 56.
For the calculation, see page 35 (Calculation exam-
ples).
▼
[l/m]
R
0.1
0.2
0.3
0.5
1.3
2
3.3
5
7.9
12.3
17.7
31.4
1.2 250
2
4
8.3
13.6
20
42
66
49
p1
34