Each system shall be identified with a colored pipe or band and coded with paint, wraps, and materials compatible with the piping.
Potable water systems shall be identified with a green background with white lettering. The minimum size of letters and length of the color field shall be in accordance with Table 1204.3.
For SI units: 1 inch = 25.4 mm
|OUTSIDE DIAMETER OF
PIPE OR COVERING
OF COLOR FIELD
|MINIMUM SIZE OF
|1/2 to 11/4||8||1/2|
|11/2 to 2||8||3/4|
|21/2 to 6||12||11/4|
|8 to 10||24||21/2|
Nonpotable water systems shall have a yellow background with black uppercase lettering, with the words "CAUTION: NONPOTABLE WATER, DO NOT DRINK." Each nonpotable system shall be identified to designate the liquid being conveyed, and the direction of normal flow shall be clearly shown. The minimum size of the letters and length of the color field shall comply with Table 1204.3.
The background color and required information shall be indicated every 20 feet (6096 mm) but not less than once per room, and shall be visible from the floor level.
Flow directions shall be indicated on the system.