Will auto shut off fuel nozzle work on gravity tank?

Automatic shut-off fuel nozzles are primarily designed to work effectively with vehicles that have pressurized fuel systems, such as those found in most automobiles with fuel tanks located below the level of the fuel dispenser. These nozzles rely on the backpressure created by the fuel entering the tank to trigger the shut-off mechanism when the tank is full.

In the case of a gravity tank, where the fuel flows by gravity rather than being pushed by a pump, the dynamics are different. Gravity-fed systems typically do not generate sufficient backpressure to trigger the automatic shut-off mechanism in standard fuel nozzles designed for pressurized systems.

If you are using a gravity-fed tank, it's essential to exercise caution and vigilance during the fueling process to avoid overfilling the tank, as automatic shut-off features may not function as intended. Monitoring the fuel level and manually stopping the fuel flow when the tank is full is crucial in such cases.

Some gas stations may have specific nozzles or dispensers designed for gravity-fed systems, and these may lack automatic shut-off features altogether. In such instances, users need to be particularly attentive to prevent overfilling and spills. Always follow safety guidelines and recommendations provided by the fueling station when using gravity-fed systems.