49
7 Appendix
Regulator inspection/low-pressure cut-off valve
Main stop
device:
open
Gas:
Natural gas
Operating
pressure: slowly increasing to
approx. 20 – 30 mbar
Legende:
1 Main stop device
closed
open
2 Meter-locking device
3
Equipment-locking device
4 Consumer
switched off
5 Cont Safety shut-off valve (SAV)
7
Hand pump
10
Y-piece with two ball valves