GB-5
D
GB
F
NL
I
E
20
21
23
15
16
17
18
19
22
VGP 20-25
7
3
4
5
6
8
10
9
▷
Check closing spring for damage.
▷
Closing spring damaged: dismantle the unit and
return it to the manufacturer.
12
11
13
14
17
16
15
12
11
13
14
17
16
15
CAUTION
Please observe the following to ensure that the
VGP is not damaged during subsequent operation:
– Install the closing spring in the correct position.
Ensure that the catch of the closing spring is
positioned in the opening of the valve disc.
20
19
21
23a
23
22
18
VGP
24
Close the solenoid valve.
25
To be able to check the tightness, shut off the
downstream pipeline as close as possible to the
valve.
0
0
N
2
≤
1,5 x p
e max
26