ARI Armaturen PREDU 700 EN - Manual (Page 8)

Page 2-8 Rev. 0040701000 1714
Operating and installation instructions
PREDU
®
4.5.1 Marking of special flanges
In case of deviations from the standard nominal pressure the valves are marked with an
additional name plate on the flange.
Fig. 4: Flange
The pairs of values of max. allowed pressure with its associated temperature and max.
allowed temperature with its associated pressure are determined from the respective
pressure-temperature diagram of material and nominal pressure.
PSmax (max. allowed pressure) nominal pressure TS (operating temperature)
PS (operating pressure) TSmax (max. allowed temperature)