This standards provides terminology and defines criteria for the design, construction and testing of cases and common parts of:
- Control pressure systems;
- Measurement systems;
- Control pressure and measurement systems,
for combustible gas of I and II family according to EN 437, operated with maximum inlet pressure up to 12 bar, installed downstream of a gas pressure and measurement control station.
This standard applies to systems supplied by network with MOPU ≤ 12 bar, donwstream a gas pressure and measurement control stations within the scope of UNI 9167.