C.I.B. UNIGAS
- M03956CR
16
MULTIBLOCDUNGS MBC1900-3100-5000SE (Flanged valves group
)
Siemens VGD20.. and VGD40.. gas valves - with SKP2.. (pressure governor)
Mounting
z
When mounting the VGD.. double gas valve, two flanges are required (as for VGD20.. model, the flanges are threaded);
z
to prevent cuttings from falling inside the valve, first fit the flanges to the piping and then clean the associated parts;
z
install the valve;
z
the direction of gas flow must be in accordance with the direction of the arrow on the valve body;
z
ensure that the bolts on the flanges are properly tightened;
z
ensure that the connections with all components are tight;
z
make certain that the O-rings and gaskets between the flanges and the double gas valve are fitted.
z
Connect the reference gas pipe (
TP
in figure), to the gas pressure nipples placed on the gas pipe, downstream the gas valves: gas pres-
sure must be measured at a distance that must be at least 5 times the pipe size .
Leave the blowhole free (
SA
in figure). Should the spring fitted not permit satisfactory regulation, ask one of our service centres for a
suitable replacement.
Caution:
the SKP2 diaphragm
D
must be vertical (see Fig. 15).
WARNING: removing the four screws BS causes the device to be unserviceable!
Pressure adjusting range
The pressure adjusting range, downstream the gas valves group, changes according to the spring provided with the valve group.
Mounting
1. Insert setscrews A
2. Insert seals
3. Insert setscrews B
4. Tighten setscrews A + B.
Ensure correct seating of the seal!
6. After installation, perform leakage and functional test.
7. Disassembly in reverse order.
Fig. 12
Fig. 13
Fig. 14
Fig. 15
SIEMENS VGD..MOUNTING
POSITIONS
Fig. 16
Mounting positions
OPTION
10 = pulse lines
njo/!6!y!EO
EO
2
22
21
"
#
#
"
#
#
"
"
BS
BS
SKP1.
SKP2.
BS
BS
SA
TP
D
7631z05/0101
