If the AFFF Transfer System Stations are normally aligned for Recirculation, what does this imply?

If the AFFF Transfer System Stations are normally aligned for Recirculation, what does this imply?

• A. Flow from supply to Main
• B. Air removal only
• C. No flow
• D. Circulation of fluid within the system

Answer: (D)

Recirculation means the system is set up as a closed loop where the foam solution is kept moving inside the transfer station itself. When the stations are normally aligned for recirculation, pumps and valves are arranged so fluid circulates within the station rather than being sent out to the main supply line or just vented away. This keeps the pump primed, reduces air pockets, and maintains the solution ready for use without delivering it elsewhere. So, the implication is that there is circulation of fluid within the system. It does not indicate flow going to the main supply, nor is it limited to air removal only, nor is it no flow.

Recirculation means the system is set up as a closed loop where the foam solution is kept moving inside the transfer station itself. When the stations are normally aligned for recirculation, pumps and valves are arranged so fluid circulates within the station rather than being sent out to the main supply line or just vented away. This keeps the pump primed, reduces air pockets, and maintains the solution ready for use without delivering it elsewhere.

So, the implication is that there is circulation of fluid within the system. It does not indicate flow going to the main supply, nor is it limited to air removal only, nor is it no flow.