Which of the following is NOT a component of standpipe systems?

A standpipe system is designed to provide water for fire protection, particularly for firefighting operations within buildings. It comprises several key components to ensure effective and efficient fire suppression.

Piping and fittings form the backbone of the system, providing the necessary channels for water distribution. Valves and hoses are also critical components, as they control the flow of water and allow firefighters to deliver water directly to the fire. The fire department connection is vital for allowing external fire services to connect their hoses to the building’s water supply, enhancing the overall firefighting capabilities.

On the other hand, fire hydrants are typically located outside of buildings and are part of the public fire protection system, separate from standpipe systems. They are used by firefighters for accessing a municipal water supply. Thus, while fire hydrants are essential for fire response in urban areas, they do not constitute a part of the internal standpipe system. This distinction clarifies why fire hydrants do not belong among the key internal components of a standpipe system.