45
7 Appendix
7.3
Connection and application options
Replacement of a meter, Test of working order
Gas:
Natural gas
Flow rate: 0 – 5 l/h
Operating
pressure: approx. 20 – 30 mbar
Preliminary test
Gas:
Air
Pressure: approx. 1.0 bar
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)
6 High performance pump
10
Y-piece with two ball valves