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How to check the level of propane in an underground tank?

April 5, 2026

Quick Answer

To check the level of propane in an underground tank, use a propane level gauge or stick with a magnet attached to a long rod to gauge the liquid level in the tank. Ensure the gauge or rod is calibrated for your specific tank size. Regularly inspect the gauge for accuracy and replace it if necessary.

Checking the Propane Level

To check the propane level in an underground tank, you’ll need a propane level gauge or a stick with a magnet attached to a long rod. The length of the rod should be at least 6 feet long to allow you to gauge the liquid level in the tank. Mark the rod with measurements or use a calibrated gauge to ensure accurate readings.

Understanding Tank Markings

The underground propane tank will have markings to indicate the propane level. These markings are usually located near the top of the tank and are divided into sections, with each section representing a specific number of inches of propane. For example, a 500-gallon tank might have markings at 10, 25, 50, 75, and 100% full, with corresponding gauge heights.

Best Practices for Maintenance

Regularly inspect the propane level gauge for accuracy and replace it if necessary. Also, ensure the gauge is securely attached to the tank to prevent it from getting damaged or lost. Always follow the manufacturer’s instructions for maintenance and calibration of the propane level gauge.

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