What is the allowable range in microns for a fuel strainer installed at the end of a pickup line inside a gasoline fuel tank?

The allowable range for a fuel strainer installed at the end of a pickup line inside a gasoline fuel tank is 500 - 600 microns. This range is appropriate because the strainer needs to effectively capture contaminants, such as rust, dirt, and other particulates, while allowing the gasoline to flow freely. Strainers with a mesh size in this micron range strike a balance between providing adequate filtration and not creating excessive flow resistance, which could impede fuel delivery.

Using a strainer that is too fine can lead to clogging and reduced fuel flow, while a strainer with a larger micron size might not effectively filter out all the contaminants. Therefore, the 500 - 600 micron range is designed to ensure that the fuel system remains clean and functional without being overly restrictive.