letter combinationsReading time:
Table 84 provides the most common functional identifications.
We quote a few combinations that can be misleading :
FE = primary flow measurement element. E.g. diaphragm, venturi…
FO = flow limiter calibrated opening.
PCV = independent pressure controller. E.g. pressure relief valve.
PSV = independent safety mechanism on a pressure. E.g. safety valve.
PC = pressure controller.
PV = pressure control valve.