In a deluge sprinkler system, all heads remain permanently open and water enters the system through a deluge valve when activated. Which system is described?

In a deluge sprinkler system, all heads remain permanently open and water enters the system through a deluge valve when activated. Which system is described?

• A. Wet Pipe System
• B. Deluge System
• C. Dry Pipe System
• D. Pre-Action System

Answer: (B)

In a deluge sprinkler system the piping is designed so every sprinkler head is open, and water is released to all heads at once when the system is activated through a deluge valve. This arrangement provides immediate, full-area coverage for high-hazard spaces, which is exactly what the description describes: heads permanently open and water entering the system through a deluge valve when activated. This differs from a wet pipe system, where piping is full of water and only the specific head triggered by heat releases water; a dry pipe system stores air or gas in the pipes and water is released into the piping only after the dry-pipe valve activates; and a pre-action system requires a triggering event to admit water into the piping.

In a deluge sprinkler system the piping is designed so every sprinkler head is open, and water is released to all heads at once when the system is activated through a deluge valve. This arrangement provides immediate, full-area coverage for high-hazard spaces, which is exactly what the description describes: heads permanently open and water entering the system through a deluge valve when activated.

This differs from a wet pipe system, where piping is full of water and only the specific head triggered by heat releases water; a dry pipe system stores air or gas in the pipes and water is released into the piping only after the dry-pipe valve activates; and a pre-action system requires a triggering event to admit water into the piping.