As demand for fuel flowing through the 362AF-7 refueling control valve decreases in a Type 4 system, where does flow increase?

In a Type 4 refueling system, understanding the operation of the refueling control valve is crucial for efficient fuel management. When the demand for fuel flowing through the 362AF-7 refueling control valve decreases, it indicates that less fuel is being requested or utilized at the output. In this scenario, the pressure drop at the output of the system leads to an increase in the flow through the return venturi.

The return venturi is designed to accommodate variations in flow demand within the system. As the flow demand decreases, the return venturi compensates for this by allowing more fuel to flow back into the system, ensuring that fuel is kept circulating and maintaining system stability. This mechanism helps manage the overall efficiency of fuel distribution, preventing situations like fuel stagnation and ensuring that the entire system operates effectively.

This explanation highlights the function of the return venturi in relation to the pressures and flows in a refueling system while connecting it to the operation of the refueling control valve.