DOE-HDBK-1016/1-93
Engineering Fluid Diagrams and Prints
ENGINEERING FLUIDS DIAGRAMS AND PRINTS
Piping Systems
Figure 7 Piping Symbols
The piping of a single system may
contain more than a single medium.
For example, although the main
process flow line may carry water, the
associated auxiliary piping may carry
compressed air, inert gas, or hydraulic
fluid. Also, a fluid system diagram
may also depict instrument signals and
electrical wires as well as piping.
Figure 7 shows commonly used
symbols for indicating the medium
carried by the piping and for
differentiating
between
piping,
instrumentation signals, and electrical
wires.
Note that, although the
auxiliary piping symbols identify their
mediums, the symbol for the process
flow line does not identify its medium.
Rev. 0
PR-02
Page 7
