Which component directly connects to branch lines in a sprinkler system?

The component that directly connects to branch lines in a sprinkler system is the cross mains. Cross mains serve as a distribution point that allows water to flow from the feed mains to the branch lines, which then deliver water to individual sprinkler heads. This design ensures that the water supply is efficiently distributed across different areas of the system.

Understanding the role of cross mains is crucial for anyone involved in the design and installation of sprinkler systems, as they are essential for maintaining adequate water pressure and supply to all components of the sprinkler system. By connecting branch lines, cross mains facilitate the effective and reliable operation of the entire sprinkler setup, ensuring that every part of the area being protected receives the necessary water flow during an activation event.