What type of solenoid is used on the 90AF-8 refueling control valve?

The type of solenoid used on the 90AF-8 refueling control valve is a two port, normally closed (N.C.) solenoid. This design is significant because a normally closed solenoid means that the valve remains closed when there is no electrical power supplied. This is crucial in refueling operations, as it prevents fuel from flowing unintentionally, thus enhancing safety and controlling fuel management during the refueling process.

When power is applied to the solenoid, it opens the valve, allowing fuel to flow as needed. This operation aligns with the function of fuel control systems, ensuring that flow can be precisely managed, permitting refueling only when it is required, and helping to prevent spills and environmental contamination.

Understanding the configuration of the solenoid and its operational states is essential for maintaining the refueling system's integrity and ensuring compliance with safety standards, thereby making the two port, normally closed solenoid the appropriate choice for the 90AF-8 refueling control valve.