Is there a shut-off valve located between the FDC and the standpipe connection?

The correct response is that there is typically no shut-off valve located between the Fire Department Connection (FDC) and the standpipe connection in most standard configurations. The primary purpose of the FDC is to allow firefighters to pump water into a building's standpipe system efficiently and quickly. It ensures a direct connection to the standpipe system, enabling an immediate and unrestricted flow of water without any valves in between that could impede response times during an emergency.

In practice, the absence of a shut-off valve helps maintain a straightforward and effective water supply path, crucial for rapid deployment in fire suppression efforts. The FDC is designed to be as simple and efficient as possible to facilitate a quick response under pressure during firefighting operations. Therefore, the established convention is that such valves do not exist in this section of the system.