What is the normal flow direction of fuel through a strainer?

The normal flow direction of fuel through a strainer is from the center to the outside. This design allows for the effective trapping of contaminants that might be present in the fuel. As the fuel enters the strainer, it flows through the center and is filtered as it travels outward through the media of the strainer. Any particulates or debris that are larger than the strainer's filtration capability are captured, while the clean fuel continues outward to the system.

The configuration ensures that the clean fuel is released into the system only after it has been properly filtered, which is critical for maintaining the integrity of the engine and fuel delivery system. The flow design enhances the efficiency of the filtering process by utilizing the entire surface area of the strainer, maximizing its efficacy in removing unwanted particles. This method is a fundamental operational principle in ensuring smooth fuel delivery and protecting sensitive engine components.