What term is used for the vertical piping connected to the check valve, alarm valve, and main drain?

The term "riser" is used to describe the vertical piping that connects various system components such as the check valve, alarm valve, and main drain. Risers serve as the vertical section of piping that transports water from a lower level to higher levels within a building, particularly in fire protection systems. They are critical for ensuring that water can be delivered effectively to the necessary areas during a fire emergency.

In fire suppression systems, risers are integral as they provide a means of moving water to upper floors and can also accommodate fire department connections and hose connections, allowing for easier access to water during firefighting operations. The design and installation of risers must adhere to specific codes and standards to ensure reliability and safety in emergency situations. Understanding the function of risers helps firefighters and technicians to operate and maintain fire protection systems effectively.