Ohio Volunteer Firefighter Practice Exam 2025 – The All-in-One Guide to Exam Success!

The vertical pipe in a sprinkler system is known as the riser. This component serves a crucial function in ensuring the delivery of water from the water supply source up to the various horizontal piping networks throughout a building, ultimately feeding the sprinkler heads. The riser allows for the conversion of vertical water flow into a distribution system that can effectively cover all necessary areas, ensuring proper fire protection coverage.

In a sprinkler system, the riser is typically the first vertical segment of piping after the supply line and is essential for maintaining the system’s pressure and flow rate. It allows for the vertical transportation of water under pressure, particularly important in multi-story buildings.

The other components listed serve different purposes; for example, the header refers to a pipe that collects water from multiple branches before it is distributed. A valve is a device that regulates the flow of water, while a trunk is generally used to describe the main pipeline in a system but is not specifically designated as the vertical component. Understanding these distinctions emphasizes the critical role of the riser in the overall functioning of a sprinkler system.