Which sprinkler system component is a section of vertical piping to which the sprinkler valve, one-way check valve, and other components are attached?

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In sprinkler systems, the vertical piping that carries water upward and serves as the mounting point for valves and other components is called a riser. This vertical section connects the sprinkler valve, a one-way check valve, and related components, allowing water to move up to the zones and be controlled as part of the system. The feed main and cross main are horizontal mains that distribute water, while a fusible link is a temperature-triggered device, not a piping section. So the vertical riser is the correct fit for where those components attach.