Where can the main control valve be located?

Where can the main control valve be located?

• A. At the system or outside the building
• B. Inside the pump room only
• C. On the roof
• D. In the basement storage

Answer: (A)

The main control valve is placed at the boundary of the system or outside the building so it can be reached quickly by responders and used to isolate the entire sprinkler or standpipe system regardless of interior conditions. This location keeps the valve accessible even if parts of the building are damaged or smoky, and it provides a straightforward point to shut off water supply for maintenance or an emergency. Placing it only inside a pump room, on the roof, or in basement storage would limit access or create barriers during a fire, making quick isolation impractical.

The main control valve is placed at the boundary of the system or outside the building so it can be reached quickly by responders and used to isolate the entire sprinkler or standpipe system regardless of interior conditions. This location keeps the valve accessible even if parts of the building are damaged or smoky, and it provides a straightforward point to shut off water supply for maintenance or an emergency. Placing it only inside a pump room, on the roof, or in basement storage would limit access or create barriers during a fire, making quick isolation impractical.