How can firefighters prevent interruptions during water relay operations?

Employing in-line relay valves is a highly effective method for preventing interruptions during water relay operations. In-line relay valves facilitate the consistent flow of water through the relay system by allowing multiple lines to be connected without the need for additional personnel to monitor and control every segment of the operation. These valves can help manage pressure and flow rates, enabling a smoother transfer of water from one point to another. They act as automatic controllers that reduce the possibility of interruptions caused by pressure fluctuations or flow variances, thus ensuring that firefighters have a reliable water supply when combating fires.

In contrast, backup pumpers can support water relay operations but do not inherently prevent interruptions as effectively because they require additional coordination and resources. Multiple hydrant connections can increase the volume of available water, but they can also complicate the system and potentially lead to pressure issues if not managed properly. Using smaller hoses may seem beneficial for less water demand, but it can actually restrict flow and increase friction loss, leading to more interruptions rather than fewer. Hence, employing in-line relay valves stands out as the most effective choice for maintaining a consistent water supply during relay operations.