The vertical piping on which the sprinkler valve, one-way check valve, FDC, alarm valve, main drain, and other components are attached is called the

The vertical piping on which the sprinkler valve, one-way check valve, FDC, alarm valve, main drain, and other components are attached is called the

• A. Feed Main
• B. Riser
• C. Cross Main
• D. Branch Line

Answer: (B)

The vertical piping is called the riser. It serves as the central vertical spine that brings water from the main supply upward and supports important control devices and connections, such as the sprinkler valve, one-way check valve, fire department connection (FDC), alarm valve, and main drain. This arrangement keeps these components accessible and organized as water is distributed to sprinklers on different levels. For contrast, the feed main refers to the primary supply line feeding the system (usually horizontal and at a lower level), a cross main is a horizontal distribution line that ties into risers, and branch lines run from the distribution mains to individual sprinklers.

The vertical piping is called the riser. It serves as the central vertical spine that brings water from the main supply upward and supports important control devices and connections, such as the sprinkler valve, one-way check valve, fire department connection (FDC), alarm valve, and main drain. This arrangement keeps these components accessible and organized as water is distributed to sprinklers on different levels.

For contrast, the feed main refers to the primary supply line feeding the system (usually horizontal and at a lower level), a cross main is a horizontal distribution line that ties into risers, and branch lines run from the distribution mains to individual sprinklers.