About Selecting Pipe Markers
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Adhesive-Back Pipe Markers


Apply directly onto clean, dry pipes for clear identification of contents.
Style A have an alternating message. Wrap them around the pipe and you can read the contents whether the arrow points left or right.
Style B have a removable arrow; apply the message to a pipe and then turn the arrow to match your system’s flow direction. For a more secure hold, pair these with pipe marker tape—just layer the tape over the edge of your markers then wrap it around the full diameter of a pipe.
Pipe markers that meet ASME A13.1 adhere to requirements that, for a given pipe size, they have the proper minimum character height, identify contents with a message, indicate flow direction with an arrow, and designate hazardous classifications with a specific marker color. For messages with multiple marker color options, choose the color that best identifies the hazardous properties of the contents according to the ASME designations.
Pipe markers that meet CGA-9 standards adhere to strict requirements for color and message uniformity to identify gas lines and equipment in medical and pharmaceutical industries. When placed according to NFPA 99 standards, they also help you meet safety standards for medical gases in your facility.
For technical drawings and 3-D models, click on a part number.
Style | For Pipe OD | Flow-Direction Arrow | Character Ht. | Ht. | Wd. | Thick. | Material | Temp. Range, °F | Specifications Met | Pkg. Qty. | Pkg. | |
Carbon Dioxide (English)—Gray with White Message | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
A | 1/4"-3/4" | Yes | 1/4" | 3" | 3" | 0.004" | Vinyl Plastic | -50° to 180° | ASME A13.1, CGA C-9, NFPA 99 | 5 | 000000000 | 00000 |
B | 3/4"-2" | Yes | 3/4" | 1" | 8" | 0.005" | Vinyl Plastic | 32° to 140° | CGA C-9, NFPA 99 | 10 | 000000000 | 0000 |
B | 2 1/4"-7 7/8" | Yes | 1 1/4" | 2" | 12" | 0.005" | Vinyl Plastic | 32° to 140° | CGA C-9, NFPA 99 | 10 | 000000000 | 00000 |
Helium (English)—Brown with White Message | ||||||||||||
A | 1/4"-3/4" | Yes | 1/4" | 3" | 3" | 0.004" | Vinyl Plastic | -50° to 180° | ASME A13.1, CGA C-9, NFPA 99 | 5 | 000000000 | 0000 |
B | 3/4"-2" | Yes | 3/4" | 1" | 8" | 0.005" | Vinyl Plastic | 32° to 140° | CGA C-9, NFPA 99 | 10 | 000000000 | 0000 |
B | 2 1/4"-7 7/8" | Yes | 1 1/4" | 2" | 12" | 0.005" | Vinyl Plastic | 32° to 140° | CGA C-9, NFPA 99 | 10 | 000000000 | 00000 |
Instrument Air (English)—Red with White Message | ||||||||||||
A | 1/4"-3/4" | Yes | 1/4" | 3" | 3" | 0.004" | Vinyl Plastic | -50° to 180° | ASME A13.1, CGA C-9, NFPA 99 | 5 | 000000000 | 0000 |
B | 3/4"-2" | Yes | 3/4" | 1" | 8" | 0.005" | Vinyl Plastic | 32° to 140° | CGA C-9, NFPA 99 | 10 | 000000000 | 0000 |
Nitrogen (English)—Black with White Message | ||||||||||||
A | 1/4"-3/4" | Yes | 1/4" | 3" | 3" | 0.004" | Vinyl Plastic | -50° to 180° | ASME A13.1, CGA C-9, NFPA 99 | 5 | 000000000 | 0000 |
B | 3/4"-2" | Yes | 3/4" | 1" | 8" | 0.005" | Vinyl Plastic | 32° to 140° | CGA C-9, NFPA 99 | 10 | 000000000 | 0000 |
B | 2 1/4"-7 7/8" | Yes | 1 1/4" | 2" | 12" | 0.005" | Vinyl Plastic | 32° to 140° | CGA C-9, NFPA 99 | 10 | 000000000 | 00000 |