What is the minimum number of refueling points required for a recirculation line in the TAFDS?

In the context of the Tactical Fuel Distribution System, the recirculation line plays a crucial role in maintaining fuel quality, ensuring that the fuel remains clean and free from contaminants. The minimum number of refueling points required for a recirculation line is established to provide adequate circulation of fuel within the system and to prevent stagnation, which can lead to fuel degradation.

Having at least four refueling points allows for sufficient flow and distribution of fuel throughout the system. This configuration enables the fuel to circulate effectively, facilitating the process of filtering and aerating the fuel as it passes through various points. This is particularly important in tactical operations where fuel integrity must be maintained to avoid operational failures due to contaminated or degraded fuel.

Thus, the requirement of having a minimum of four refueling points ensures optimal performance and reliability of the Tactical Fuel Distribution System, making this the correct choice.