Sistem Fire Pump
Fire pump is an important component in a fire protection system that helps provide water flow and pressure according to system requirements. However, under normal conditions when the system is not using a large amount of water, maintaining stable pressure throughout the network is the role of the jockey pump. This component works together with the main fire pump to keep both hydrant and sprinkler systems ready for operation.
What Is a Jockey Pump?
A jockey pump is a relatively small-capacity pump designed to maintain pressure within a fire protection network. It is intended to compensate for minor pressure drops that may occur due to pressure fluctuations, minor leakage within acceptable system limits, or the need to restore pressure within the network.
Unlike the main fire pump, which is designed to provide a large water flow when the system requires firefighting water, the jockey pump operates under normal conditions and helps ensure that the system remains within its designated pressure range.
Simply put, a jockey pump in a fire pump system can be understood as a component that maintains pressure in the network so the main pump does not need to start every time there is a minor pressure drop.
How Does a Jockey Pump Work?
The operation of a jockey pump is closely related to a pressure switch or other pressure control device. In general, the process works as follows:
System pressure remains normal
The hydrant or sprinkler network remains pressurized, so the jockey pump does not need to operate continuously.
System pressure decreases slightly
When pressure drops to a predetermined level, the control system sends a signal for the jockey pump to start.
Pressure increases again
The jockey pump supplies water to the network to restore pressure to the specified level.
The pump stops after the pressure is restored
Once the pressure returns to the normal range, the controller stops the jockey pump, keeping the main fire pump in standby mode.
Why Is a Jockey Pump Needed in a Fire Pump System?
The presence of a jockey pump is more than simply an additional component in a fire protection installation. It helps maintain network pressure and supports the overall operation of the system.
1. Maintaining Stable Network Pressure
A jockey pump helps maintain pressure in the piping network when a minor pressure drop occurs. This is important because a fire protection network needs to remain pressurized and ready for operation without activating the main pump every time a small pressure change occurs.
2. Reducing Unnecessary Main Fire Pump Activation
The main fire pump is designed to handle a much larger water flow than a jockey pump. When a minor pressure drop occurs, the jockey pump can restore the pressure without immediately activating the main pump.
Therefore, a jockey pump and fire pump configuration allows each pump to perform its intended function according to its characteristics and capacity.
3. Supporting Hydrant and Sprinkler System Readiness
A jockey pump can be used in systems connected to both hydrant and sprinkler networks. When the network needs to remain pressurized, the pressure-maintaining pump helps keep the system ready to provide a larger water flow when required.
Also read: How Fire Pumps Work in Hydrant and Sprinkler Systems
Difference Between a Jockey Pump and a Main Fire Pump
Although they operate within the same system, a jockey pump and a main fire pump have different functions.
| Aspect | Jockey Pump | Main Fire Pump |
|---|
| Primary function | Maintains network pressure | Provides firefighting water flow |
| Capacity | Relatively small | Larger |
| Operating condition | Minor pressure drop | High-flow demand |
| Role | Keeps the system pressurized | Supports water supply when the system requires it |
| Operation | Responds to pressure changes | Starts according to system conditions and requirements |
These differences demonstrate that a fire pump system does not rely on a single type of pump but requires a configuration that matches the characteristics of the fire protection network.
Things to Consider When Using a Jockey Pump
To ensure that the jockey pump performs its function properly, several technical aspects should be considered during system design, installation, and maintenance.
Pump capacity: It should match the characteristics of the system so it can handle minor pressure drops without taking over the function of the main fire pump.
Pressure settings: Start and stop pressure settings should be configured according to the system design and applicable requirements.
Controller: The control device should be inspected to ensure that start and stop commands operate properly.
Valves and piping: Connections, valves, and suction and discharge piping should be inspected regularly.
Pressure gauge: Pressure readings help operators monitor network conditions and identify unusual pressure changes.
Conclusion
A jockey pump is an important component of a fire pump system because it helps maintain network pressure under normal conditions and reduces unnecessary main fire pump operation caused by minor pressure drops. By understanding the different functions of the jockey pump, main fire pump, hydrant pump, and sprinkler system, fire protection system planning and maintenance can be carried out more effectively according to the system design and applicable standards.