Medical Gas Markers Information

Medical Gas Markers Information

NFPA 99C 2002 Edition

• Piping should be labeled by means of metal tags, stenciling or adhesive markers that identify the medical gas or vacuum system.
• Pipe labels should show the name of the gas/vacuum system or the chemical symbol
• Color identification of piping used should be in accordance with the gases and colors indicated in CGA Pamphlet C-9
• Service outlets and inlets should be identified as to the name or chemical symbol for the specific gas or vacuum provided

Pipe labels should be located as follows:

• At intervals of not more than 20 feet.
• At least once in or above every room or area
• On both sides of walls or partitions penetrated by the piping
• At least once in every story height traversed by risers.
• Flow arrows should point from the station inlet toward the receiver or pump (Vacuum Systems)
• Flow arrows should point from the terminal to the vacuum producer (WAGD Systems)

CGA Pamphlet C-9 1988

This standard sets forth color uniformity for the identification and marking of medical equipment intended for use with specific medical gases. Colors shown on the table below should be used on containers which are intended for medical use color marked according to the gases they contained.

NFPA 99 TABLE 5.1.11 Standard Designation Colors and Operating Pressures for Gas and Vacuum Systems

GAS SERVICE	ABBREVIATED NAME	GRAPHIC REPRESENTATION	MARKER COLOR (Background/Text)	STANDARD GAUGE PRESSURE
Medical Air	Med Air		Yellow / Black	50-55 psi
Carbon Dioxide	CO2		Gray / Black or Gray / White	50-55 psi
Helium	He		Brown / White	50-55 psi
Nitrogen	N2		Yellow / Black	160-185 psi
Nitrous Oxide	N2O		Blue / White	50-55 psi
Oxygen	O2		Green / White or White / Green	50-55 psi
Oxygen / Carbon Dioxide Mixtures	O2 / CO2 n%(n is % of CO2)		Green / White	50-55 psi
Medical - Surgical Vacuum	Med Vac		White / Black	15 in to 30 in HgV
Waste Anaesthetic Gas Disposal	WAGD		Purple / White	Varies w/system type
Other Mixtures	Gas A% Gas B%		Colors as above (Major gas for bkgd / minor gas for text)	None
Non-Medical Air(Level 3 gas-powered device)			Yellow with White diagonal stripe / Black	None
Non-Medical and Level 3 Vacuum			White and Black diagonal stripe / Black boxed	None
Laboratory Air			Yellow and White checkerboard / Black	None
Laboratory Vacuum			White and Black checkerboard / Black boxed	None
Other Mixtures			Red / White	160-185 psi

• Medical Gas Pipe Markers conform with the National Fire Protection Association Standard (NFPA 99C) and the Compressed Gas Association Standard (CGA C9)
• EZ medical gas markers were designed to wrap completely around 3/8" thru 2" piping.
• Markers are available in 2 different formats: Cards (Style M2 & M3) and Rolls
  • Card Size M2 has one 4" x 7" marker. Use on 1" & 2" pipes.
  • Card Size M3 has one 2-3/4" x 3" marker. Use on 3/8" thru 3/4" pipes.
  • Rolls come with 100 markers @ 3" x 3" each. Use on 3/8" thru 3/4" pipes.
• Self-Adhesive Vinyl Labels
• All Markers include directional arrows
• Markers are available in a variety of different legends and colors.
• Durability: 4 to 5 years outdoors Mid Continental US
• Service Temp: -20 to 200° F
• Minimum Application Temp: 50° F
• Surface Prep: Clean & Dry
• Spec Compliance: NFPA 99C & CGA C-9

MARKER SIZE CHART

The following chart shows the recommended pipe marker size based on the outside pipe diameter of the pipe to be identified.

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LEGENDS & DIRECTIONAL FLOW

The standard regards the legend (wording on marker) to be the primary means of identifying the content of the pipe. The marker should give the name of the contents of the pipe in either the full name or abbreviated form. Arrows are also required to indicate the directional flow of the contents. Legends should be brief, pointed, and simple for greatest effectiveness. Contents should be identified with sufficient additional details such as temperature, pressure, etc., as are necessary to identify the hazard. Legends should be applied close to valves or flanges and adjacent to changes in direction, branches and where pipes pass through walls or floors; and at intervals on straight pipe runs sufficient for identification.