How should fuel not be transferred to a tank?

Fuel should not be transferred to a tank by pressurization due to safety concerns and the potential for creating hazardous conditions. Pressurized fuel transfer can lead to leaks or ruptures in the tank or fuel lines, increasing the risk of fire or explosion. Additionally, pressurizing an uncontrollable volume of fuel may risk overfilling, which can cause spills and environmental contamination.

Gravity feed, pump assist, and manual pouring are methods that are generally considered safer and more controlled for transferring fuel. Gravity feed utilizes the force of gravity to move the fuel, which eliminates the risks associated with pressurization. Pump assists are designed to move fuel efficiently without introducing high-pressure scenarios. Manual pouring is often used for small quantities and provides direct control over the flow, minimizing the risk of spills. Thus, avoiding pressurization helps to maintain safety standards in fuel handling.