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Are There Labeling Requirements for Installed Propane Lines?

April 5, 2026

Quick Answer

Labeling requirements for installed propane lines vary depending on the jurisdiction and specific regulations. In the United States, for example, the International Fuel Gas Code (IFGC) sets standards for labeling and identification of propane lines.

Labeling and Identification Requirements

The IFGC requires that propane lines be identified and labeled with the type of fuel they carry and the maximum allowable working pressure (MAWP). This information must be marked on the piping material itself, either by stamping, etching, or labeling. Propane lines should be labeled with a minimum 0.25-inch-high lettering, and the MAWP should be in a minimum 0.3125-inch-high lettering.

Pipe Marking Standards

According to the IFGC, propane lines should be marked with a color code system to indicate the type of gas they carry. For example, propane lines are typically marked with a yellow label, while natural gas lines are marked with a blue label. The label should also include the MAWP and the name of the piping material. For example, a propane line might be labeled with “Propane - Yellow - 150 PSI - CPVC”.

Best Practices for Labeling and Identification

To ensure compliance with labeling and identification requirements, it’s essential to follow best practices when installing propane lines. This includes using approved labeling materials and techniques, ensuring that labels are easily readable and visible, and maintaining accurate records of piping materials and installation details. Additionally, it’s crucial to consult local building codes and regulations, as well as industry standards, to determine specific requirements for labeling and identification in your area.

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