Which type of nozzle is commonly used by fire departments for high-rise firefighting?

The low-pressure combination nozzle is commonly used by fire departments for high-rise firefighting because it is specifically designed to operate effectively at lower pressures while still providing a versatile flow of water. In high-rise situations, firefighters often face challenges such as limited water supply and increased friction loss in hoses due to height, making it essential to use a nozzle that can perform well under these conditions.

The low-pressure combination nozzle allows firefighters to adjust the spray pattern from a straight stream to a fog pattern, providing flexibility in various scenarios, such as targeting specific fire areas or maximizing cooling in a smoke-filled environment. Using this type of nozzle can enhance safety and effectiveness when suppressing fires in high-rise buildings, where access can be complicated and conditions can change rapidly.

In contrast, the other types of nozzles mentioned may not offer the same versatility or efficiency in high-rise operations, making the low-pressure combination nozzle the preferred choice in this context.