1. Fire Pump: The heart of the fire pump set is the fire pump itself. This is a specialized pump that can deliver high-pressure water to fire sprinkler systems, standpipes, fire hydrants, or other fire protection equipment. Fire pumps can be either electrically or diesel-driven, depending on the system’s requirements.

2. Prime Mover: Fire pumps can be driven by electric motors or diesel engines. Electric motors are commonly used in buildings with a reliable power supply, while diesel engines are used in places where power reliability is a concern.

3. Controller: A fire pump controller monitors the water pressure and activates the pump when the pressure drops below a certain threshold. It also provides various safety features and alarms.

4. Suction and Discharge Piping: Fire pump sets include suction and discharge piping that connects the fire pump to the water supply source and the fire protection system. These pipes are designed to handle the required flow rates and pressures.

5. Jockey Pump: In some systems, a jockey pump is installed to maintain system pressure within a specific range. It operates continuously to keep the system pressurized and ready for immediate use. When the jockey pump can no longer maintain the pressure, the main fire pump is activated.

Key Functions and Features:

1. Water Supply: Fire pump sets are essential in areas with inadequate water pressure or flow rates. They ensure that the required amount of water reaches the fire protection system swiftly.

2. Pressure Maintenance: Fire pump sets can maintain the pressure in the fire protection system, preventing any pressure drop that might occur due to minor leaks or system losses.

3. Fire Department Connection (FDC): Fire pump sets often have a dedicated fire department connection, allowing the fire department to connect their hoses to the system and augment the water supply during a firefighting operation.

4. Testing and Maintenance: Regular testing and maintenance of fire pump sets are crucial to ensure they operate correctly in emergencies. This includes routine inspections, performance tests, and adherence to regulatory standards.

5. Alarm and Monitoring: Fire pump controllers typically include alarms and monitoring features to alert operators to any issues with the pump or system.

6. Compliance: Fire pump sets must comply with local and national fire codes and standards, such as NFPA 20 (Standard for the Installation of Stationary Pumps for Fire Protection).