In a deluge sprinkler system, water is released to all sprinklers upon system activation.

• A. Only the sprinkler that detected heat releases water.
• B. All sprinklers release water.
• C. Water releases to sprinklers via a preset valve network.
• D. None of the above.

Answer: (B)

All sprinkler heads are open and connected to the same water supply, so when the deluge system is activated, water flows to every head. The control valve opens and floods the entire piping network, causing all sprinklers to discharge water at once. This rapid, full-head delivery is what defines a deluge system and makes it different from systems where only the triggering head releases water or where water distribution depends on a network of valves.