In a water spray fixed system, how is water initiated to flow?

In a water spray fixed system, the flow of water is initiated automatically by smoke detection. This means that the system is designed to activate in response to the presence of smoke, which indicates a fire hazard. The automatic activation is critical for ensuring a prompt response to fires, helping to control or extinguish flames and mitigate damage.

Smoke detectors play a vital role in sensing the early stages of a fire, triggering the water spray system without the need for human intervention. This automatic response enhances safety, particularly in environments where a rapid reaction is essential for protecting lives and property.

While pressure pumps and manual activation are important components in various firefighting systems, they are not the primary means of initiating flow in a water spray fixed system specifically. Moreover, systems that require no activation at all do not align with the purpose of a smoke detection-dependent system, as these systems rely on detecting specific conditions (like smoke) to engage.