What does 'parallel volume' refer to in fire service operations?

In fire service operations, 'parallel volume' refers to the capacity for changeover valves. This term is significant because changeover valves are used to transition between different water supply sources or to ensure a continuous water supply during firefighting operations. Understanding the volume capacity managed by these valves is crucial for maintaining adequate water flow and pressure during an emergency situation.

In firefighting contexts, the capacity of the changeover valve directly impacts the efficiency and effectiveness of water delivery. If a changeover valve does not have adequate parallel volume, it may restrict flow, potentially jeopardizing firefighting efforts. Knowledge of how these systems function and their volume capacities allows operators to manage resources effectively during critical operations.