Which component electronically activates the AFFF?

Which component electronically activates the AFFF?

• A. AFFF Stations (6 on board)
• B. Solenoid Operated Pilot Valves (electronically activate the AFFF)
• C. Seawater Flow Control Valve (hycheck valve)
• D. Eductors

Answer: (B)

The initiating element is the solenoid-operated pilot valves. These valves respond to an electrical signal and control the opening of the system’s main valves. When energized, they move the pilot valves, which allows the foam concentrate to be drawn into the water stream through the eductors, creating the foam solution used to fight the fire. The other components play important roles—stations are where you access and deploy hoses, the seawater flow control valve regulates water, and the eductors mix the foam concentrate with the water—but the electronic activation of the AFFF system itself comes from the solenoid-operated pilot valves.

The initiating element is the solenoid-operated pilot valves. These valves respond to an electrical signal and control the opening of the system’s main valves. When energized, they move the pilot valves, which allows the foam concentrate to be drawn into the water stream through the eductors, creating the foam solution used to fight the fire. The other components play important roles—stations are where you access and deploy hoses, the seawater flow control valve regulates water, and the eductors mix the foam concentrate with the water—but the electronic activation of the AFFF system itself comes from the solenoid-operated pilot valves.