Dispenser Filters FAQ

1. How Often Should Filters Be Changed?

For most facilities, it is recommended that dispenser filters be changed at least once a year. Facilities with a higher throughput may need to change filters more frequently. In general, how often a filter should be changed depends on fuel output, the quality of the fuel, and if there is water present in the system.

2. Which Filter Should I Use?

Installing the correct filter will play a key role in determining the life of the filter. Filters are measured in microns. A larger micron rating will allow larger particles through the system. A 10-micron filter would be ideal for an unleaded product, while a 30-micron filter is better suited to a product like diesel. If you're unsure if a filter is correct for your product, contact your petroleum service company for verification.

3. What Happens if a Filter Malfunctions?

As the system operates, the filter will become clogged with debris, bacteria, and water. One of the most common issues to arise from clogged filter is slow product flow, which your customers will not appreciate. A clogged filter can cause your pump to “starve” or may cause back pressure, depending on the type of delivery system.

4. What are the Steps for Changing a Filter?

Regardless of whether the dispenser has secondary containment or not, the following measures should be taken when changing filters:

  • Disable the system
  • Use fuel pans that fit below the dispenser in conjunction with fuel absorbent pads
  • Monitor the filter after replacement to ensure that there is a tight seal
  • Mark the filter with a replacement date by writing on the filter with a permanent marker
  • Routinely check filters for rust spots, as small holes can develop
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