What happens to the main valve during pantograph flushing based on action from solenoid B on the 58AF-9-1 defuel/flush valve?

The main valve opens during pantograph flushing when solenoid B on the 58AF-9-1 defuel/flush valve is energized. This action allows for the flow of fluid, which is essential for the flushing process to occur effectively. In the context of the defuel and flush operations, energizing the solenoid activates the valve mechanism, leading to the opening of the main valve. This is critical for ensuring that the system can perform its intended function, allowing for the proper clearance of fuel or water through the system.

Understanding how solenoids function within control systems, particularly in fuel and water systems, clarifies how energizing a solenoid results in opening the relevant valves. This principle is significant for ensuring system integrity and efficiency during the flushing operations.