47
ASX 176
Use, maintenance and warning instructions
HIGH PRESSURE REGULATOR
|
DESCRIPTION AND OPERATION
|
REV. 00
EN
4.5.3 - SLAM-SHUT VALVE
The slam-shut valve is a safety device is used to shut off the gas flow if the pressure value at the control point exceeds the
calibration value of the valve itself.
The slam-shut valve is incorporated in the main regulator of the equipment and consists of:
• a control system;
• the slam-shut device mechanism.
In the event of tripping, the slam-shut valve shuts off power supply to the regulator and its control pilot.
4.5.3.1 - BUILT-IN SLAM-SHUT VALVE SSX/176
The built-in slam-shut valve SSX/176 can be operated:
• by the pressure switch;
• manually;
• with remote control.
The main features of the SSX/176 built-in slam-shut valve are:
• balanced valve plug;
• local shut-off button;
• tripping due to downstream pressure increase and/or decrease;
• built-in bypass;
• manual resetting only.
Pressure switch type
Set
Operating range (bar)
AG
Mod. 102M
max
0.2 - 5.5
5
min
0.05 - 0.2
30
min
0.2 - 2.8
10
Mod. 103M
max
2 - 7
5
max
7 - 22
2.5
min
0.2 - 2
10
min
2 - 8
2.5
Mod. 104M
max
15 - 45
2.5
min
1.6 - 8
5
min
8 - 18
2.5
Mod. 105M
max
30 - 90
2.5
min
3 - 16
5
min
16 - 44
2.5
Mod. 102MH
max
0.2 - 5.5
5
min
2.8 - 5.5
2.5
Mod. 103MH
max
2 - 7
5
max
7 - 22
2.5
min
8 - 19
5
Mod. 104MH
max
15 - 45
2.5
min
18 - 41
2.5
Mod. 105MH
max
30 - 90
2.5
min
44 - 90
2.5
Tab. 4.20.
Summary of Contents for ASX 176
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