MIL-STD-1247 Markings, Functions And Hazards Designations Of Hose, Pipe, And Tube Lines For Aircraft Missile, And Space SystemsThis standard establishes material labeling requirements for identification, function, subfunction, pressures, hazards and direction of flow for pipes, hoses and tube lines used in aircraft, missile, space systems, and support equipment. The use of colors, words and symbols to identify the functions of such items to include approved abbreviations, and the dimensions of labeling items such as tags, tapes, and bands, are specifically prescribed see 4.1.1.

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MIL-STD-1247D

AEROSPACE INDUSTRIES ASSOCIATION OF AMERICAN, INC. (NATIONAL AEROSPACE STANDARDS)

NAS 1411                   -           Band Marker, Blank

(Application for copies should be addressed to Aerospace Industries Association of America, Inc., 1250 Eye Street, N.W., Suite 1200, Washington, DC, United States, 20005-3924 or https://www.aia-aerospace.org.)

2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.

3. DEFINITIONS

3.1 Cold lines. The term is used to denote lines in which the temperature of the flowing medium is below -60°F (-51°C).

3.2 Compressed gas lines. Compressed gas lines are lines which carry a gaseous substance, other than air under pressure or vacuum.

3.3 Function. A term describing the system or active medium (material) contained in the conduit, pipes, hose or tube lines.

3.4 Hot lines. This term is used in classifying lines on which the surface temperature ranges above 325°F (162.8°C).

3.5 Identification group. The group of all the markings necessary for positive identification of a line. The group includes colors, words, and symbols denoting function, hazard, pressure, voltage, and direction of flow without repetition of any element, and pertinent to positive identification of the line.

3.6 Instrument air lines. Instrument air lines are lines which carry air for activating pressure operated gages.

3.7 Lines. A conveyance medium which includes any pipe, hose, or tube used to carry liquids and gases. Vacuum lines are also included. It also includes any conduit used to house electrical wires or cables. Accessories such as pipe covering are considered as parts of the line. NOTE: Access doors or panels to servicing points should be identified in accordance with

MIL-STD-2161, or as otherwise approved by the procuring activity.

3.8 Pneumatic air lines. Pneumatic air lines are lines which carry air, other than instrument air, under pressure.

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