What must be adjusted to control the differential pressure in the 302AF fueling and defueling valve system?

In the context of the 302AF fueling and defueling valve system, controlling the differential pressure is crucial for safe and efficient operation. The loading pressure relief control plays a vital role in this process. By adjusting the loading pressure relief control, the system can manage the pressure differences between the inlet and outlet sides of the valve. This regulation ensures that the flow of fuel is maintained within safe limits and prevents potential overpressure situations that could lead to system failures or hazardous conditions.

While the other options present relevant components of the system, they do not specifically relate to the direct control of differential pressure. For example, Hytrol size affects flow characteristics but does not inherently control pressure. Solenoid pressure settings primarily regulate the opening and closing of valves rather than the differential pressure itself. Orifice plate alignment is significant for flow rates but again does not directly manage the pressure differences in the system. Therefore, adjusting the loading pressure relief control is essential for maintaining the desired differential pressure in the 302AF fueling and defueling valve system.