Which component is inspected and may include low temperature alarms, associated with pre-action and deluge systems?

• A. Alarm devices
• B. Valve enclosures
• C. Water supply tanks
• D. Fire pumps

Answer: (B)

The part being described is the valve enclosure. In pre-action and deluge fire protection systems, the valve enclosure houses the valve that controls water release into the piping. This valve must be regularly inspected to ensure it can move properly and stay in the correct position, because the system’s readiness depends on that valve functioning correctly when needed. In colder environments, a low temperature alarm is often installed on the valve enclosure to alert if temperatures drop enough to risk freezing, which could hinder valve operation or damage the system. So the valve enclosure is the component that is inspected and may carry low temperature alarms. Alarm devices, water supply tanks, and fire pumps have important roles too, but they are not specifically the components that are paired with low temperature alarms in the context of pre-action and deluge systems.