Temperatures it must withstand.
Vibrations it is subject to.
IDENTIFICATION OF LINES
Except for the inlet and exhaust sections of the engine compartment,
plumbing lines are identified with adhesive bands of different colors
coded to the particular system to which each line belongs.
In the
Army, two types of identification code systems are used: the print-
symbolized tape system (the preferred method), and the solid-color
tape system (the alternate method).
The preferred system uses tape
bands of two or more colors printed with identifying geometrical
symbols and the name of the system.
Examples of these bands are
shown in Figure 2-1.
The alternate method uses one, two, or three
bands of 1/2-inch solid-color tape wrapped on the various lines for
identification.
The color code used with this system is shown in
Figure 2-2.
In areas near the inlet section of the engine compartment where the
tape might be ingested (sucked in) or near the exhaust section where
high temperatures might burn the tape, suitable paints conforming to
the color codes in Figure 2-2 mark plumbing lines.
Additional white tapes labeled "pressure," "drain," or "return" can
be used next to the color bands of either code system to identify the
lines.
These tapes are also printed with arrows indicating the
direction of fluid flow.
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AL0907
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