Which component indicates the pressure near the discharge casting of a fire pump?

The pressure gauge is the component that indicates the pressure near the discharge casting of a fire pump. This device provides vital information about the water pressure being discharged from the fire pump, which is essential for ensuring that the fire protection system is functioning properly. A proper understanding of pressure levels is crucial, as it helps in assessing the performance of the pump and ensures that adequate water flow and pressure are available for firefighting efforts.

The pressure gauge allows technicians and firefighters to monitor the system in real-time, enabling them to make informed decisions during fire emergencies. Maintaining the correct pressure is critical, as insufficient pressure may result in inadequate water supply for extinguishing fires, while excessive pressure could damage the system or lead to failures.

While other components are important in the overall functioning of a fire pump system, they serve different purposes. For example, a flow meter measures the volume of water being pumped, a temperature sensor monitors the temperature of the water or the pump itself, and an indicator light might signal the operational status of the system or alerts for maintenance needs, but none provide direct information about the pressure in that specific area as the pressure gauge does.