True or False: In Deluge systems, the sprinkler heads are always closed.

In deluge systems, the sprinkler heads are not always closed, which makes the statement false. Deluge sprinkler systems are specifically designed to release water from all open sprinkler heads simultaneously when the system is activated. This means that the sprinkler heads are typically open and ready to discharge water in the event of a fire.

The operation of a deluge system is different from that of traditional sprinkler systems, where individual heads may remain closed until a specific head is activated by heat from a fire. In contrast, deluge systems are used in high-hazard areas where rapid suppression is critical, and they use open sprinkler heads to allow for immediate water discharge over a wide area.

While the system may be in a closed or inactive state during maintenance, the defining characteristic of deluge systems is that the heads themselves are designed to be open and ready for immediate operation, contrary to the assertion that they are always closed. This distinction is crucial for understanding how deluge systems function within fire protection systems.