What is triggered to close the main valve in a flush mode system?

The main valve in a flush mode system is designed to close upon the energization of the solenoid. When the solenoid is energized, it creates a magnetic field that causes the valve mechanism to trigger and shut, which is essential for controlling the flow and ensuring the system operates correctly during the flush cycle. This function is critical in various applications, as it helps prevent overflows and maintains the integrity of the fluid system.

In contrast, if the solenoid were deenergized, it would typically allow the valve to open or remain in its open position, which is not the intended operation during the flush mode. Mechanical engagement usually refers to a different actuating mechanism which might be used in non-solenoid applications, while manual override would require human intervention, making the system less automated and efficient in flush operations.