DJ (diesel + jockey) Fire Pump Set

Fire pumps can be powered by various sources, including electricity, diesel engines, and, in some cases, natural gas. The selection of a power source depends on factors such as reliability, availability, and the specific requirements of the facility.

Electric fire pumps are commonly used in urban areas with a stable power supply. They are efficient and can start automatically in response to a fire alarm signal. In contrast, diesel-powered fire pumps are reliable in areas with inconsistent power availability, as they can function independently. The choice of power source should align with the facility’s operational conditions and the need for uninterrupted fire protection.

The EJ Dual Power Fire Pump System is an innovative and reliable fire protection solution. Combining an electric pump for robust water pressure and flow with a top-quality jockey pump for stable pressure maintenance, this system ensures efficient and timely water supply during fires. With advanced automation, remote monitoring, and energy-saving features, the EJ Dual Power Fire Pump System is a trusted choice for commercial, industrial, and residential applications.

Fire pump system is made of Diesel+Jockey pump
1. Diesel engine pump, can use single stage pump, horizontal split case pump, end suction pump, multistage pump, material can be cast iron, stainless steel, and bronze impeller , with fuel tank, water tank，fan, control box
2. Jockey pump, horizontal or vertical, capacity will be small, but head should be higher than electric and diesel engine pump
Jockey material casing: cast iron, shaft and impeller: SS304

The fire pump is designed to divert water when a fire is detected by the sprinkler system or other fire-detection device. The pump will then draw water from the water supply source and deliver it to the sprinkler system, fire hoses, or other fire suppression devices.

The vertical multistage centrifugal pump set cooperates with the main pump to take water from the pool and transport it to the system to maintain the system pressure.
The pressure stabilizer pump of the “stabilized high pressure” fire water supply system must be kept in operation at ordinary times to maintain the pressure of the pipe network. In the event of a fire, it should still be able to run for a period of time until the main fire pump is started. Set up the booster pump. Because the constant pressure pump needs to keep running all the time, which wastes energy, and the constant pressure pump is in working state for a long time, it has high requirements on its service life, so this method is no longer used in the project.

Fire pump installations must consider factors such as temperature, humidity, and potential flooding. Pumps should be installed in environments that protect them from extreme conditions to ensure reliable operation.

Features of diesel multi-stage pump:
1. Multiple impellers are combined in series, the output pressure is large, so the lift is high.
2. The shaft seal adopts packing seal or mechanical seal, the seal is safe and reliable, the structure is simple, and the maintenance is convenient and quick.
3. The shaft is a fully sealed structure, which ensures no contact with the medium, no rust, and long service life.

Flow: 30-9000GPM
Head: 3-20Bar
Speed: 740-2900r/min
Frequency: 50 HZ or 60 HZ
The ED Fire Pump Set combines electric and diesel engine pumps to ensure uninterrupted fire protection and a reliable water supply.
In various fields, our products find applications in large hotels, hospitals, schools, office buildings, supermarkets, commercial residences, subway stations, train stations, airports, various transportation tunnels, petrochemical plants, thermal power plants,oil storage tanks, large warehouses, industrial and mining enterprises, seawater injection, etc.

A fire pump is a critical component of a fire sprinkler system, providing the necessary water pressure to ensure the sprinkler system works properly. Fire pumps are usually powered by electric motors or diesel engines and they come in centrifugal, turbine, or rotary types.

To ensure that the fire pump is working properly, it is important to maintain and test it regularly. Regular maintenance tasks include inspecting the motor and fuel system, changing the oil, and checking the battery. Testing the pump pressure and flow rate should also be done on a regular basis. If any issues are found, it is important to contact a professional for assistance. A trained technician should also inspect the fire pump annually.

Instructions for use:
Altitude≤1000m;
Ambient temperature: +5℃～+40℃;
Relative humidity: <= 90%. Scope of application of fire pump set: Equipment suitable for fire protection occasions such as warehouses, docks, airports, petrochemicals, power plants, liquefied gas, textiles, ships, oil tankers, etc.

Fire pump refers to a clean water pump used for fire water supply, and a single water pump with a treatment medium temperature lower than 80 degrees and non-corrosive. The pump unit is a joint operation of multiple fire pumps to ensure the quantity and stability of water supply. The electric motor fire pump set adopts multiple fire water pumps powered by electric motors.

The electric motor fire pump is an important water supply equipment in the fire protection system. The electric motor fire pump has a wide range of head, flow and power, and can be used in many environments. Providing sufficient water supply is the key to ensure emergency use.

Diesel engine fire pump is suitable for high-lift and high-flow fire-fighting water supply environment or as a backup fire-fighting water supply pump. The reason is that the diesel engine has strong power and can be used with large-flow fire-fighting deep well pumps, and the diesel engine fire pump has the characteristics of self-start after power failure. It can provide emergency water supply and is a good choice in fire pumps.

Our highly acclaimed Box-type Non-Negative Pressure Water Supply Equipment is the savior for your hotels, hospitals, schools, and more! Not only does it provide stable water flow and pressure, but it also guarantees fresh water quality! Suitable for life water supply systems in high-rise buildings, residential communities, and large-scale architectural complexes, bid farewell to water shortage worries! The Box-type Non-Negative Pressure Water Supply Equipment features an advanced automatic control system that instantly starts the water pump when demand increases, providing you with a continuous and stable water flow. And when demand decreases, the pump intelligently stops, avoiding energy waste! The compact box-type structure makes installation and maintenance a breeze! Whether it’s solving water supply issues in low-pressure areas or addressing the needs of places like hotels, hospitals, and schools where water cannot be shut off but face insufficient tap water pressure, our Box-type Non-Negative Pressure Water Supply Equipment offers the perfect solution!

·UL Standard
Flow：50-3000 GPM
Head： 5-20 Bar (72.5-290 psi)
Speed：740-2900 r/min
·Non-UL Standard
Flow：30-9000 GPM
Head： 3-20 Bar (40-300 psi)
Speed：740-2900 r/min

All places need to be equipped with fire-fighting facilities, and fire pumps are necessary water intake equipment for fire-fighting facilities. At least one or two fire pumps are equipped. The fire pumps we commonly use are electric fire pumps and diesel engine fire pumps. The difference between the two is The electric fire pump needs to be supplied by the power system. If the power is cut off, the diesel engine fire pump can be started at any time to make up for the original position of the electric fire pump.

Flow: 45 GPM
Head: 7 Bar
The ED Dual-Power Fire Pump System combines electric and diesel engine pumps to ensure uninterrupted fire protection and a reliable water supply. In the event of power outages or electrical failures, the diesel engine pump seamlessly takes over, guaranteeing continuous operation of the fire protection system. This dual-power configuration offers both reliability and flexibility, providing comprehensive coverage for fire safety needs.

·UL Standard
Flow：50-3000 GPM
Head： 5-20 Bar (72.5-290 psi)
Speed：740-2900 r/min
·Non-UL Standard
Flow：30-9000 GPM
Head： 3-20 Bar (40-300 psi)
Speed：740-2900 r/min

If the fire pump is corroded, it should be inspected by a qualified professional. Depending on the extent of the corrosion, the pump may need to be repaired or replaced. The professional may also need to inspect the entire system for any other potential issues. In some cases, a fire pump may need to be replaced if the corrosion is severe and cannot be repaired.

Small flow fire pump assemble process
This is for Philippines order for us, and flow as 50gpm 6bar
Normal use for small shop and hotel project

1150LPM@60M Fire Pump Package Set For Your Reference

120≤ Q≤1000GPM
H＜150m
Electric pump + Diesel engine pump + Jockey pump
Pump – Horizontal end suction pump

The three pumps are automatically started and stopped. When the joceky pump detects that the electric pump cannot operate normally, the diesel engine pump will start automatically. Can also be used, the fire pump set is widely used in various emergency firefighting occasions.

The diesel engine fire pump has automatic, manual and fault self-checking functions. It can monitor the working state of the whole process, restore the function of failure start, automatic pre-lubrication and automatic restart of preheating, so that the equipment start-up is safer and more reliable. It has the functions of central control room remote control, remote control and field bus connection. The battery is fully automatic floating charge (constant current, constant voltage, trickle charge) mode to ensure that the battery is in a standby state at any time. Diesel engine fire pump is easy to use, equipped with remote instrument and instrument, which can be connected to the control center as needed, easy to install and use, and easy to maintain.​​

1.Flow：30-9000 GPM
2.Head： 3-20 Bar 40-300 psi
3.Power：Diesel & Electric Pump:1.5-710kw Jockey Pump:0.55-160kw
4.Speed：740-2900 r/min
The DJ Fire Pump Set is a combination system consisting of a diesel engine pump and a jockey pump, designed for fire safety in the construction and industrial sectors. This system utilizes the powerful power output of the diesel engine pump, ensuring reliable operation even in the event of a power outage.

1. Disconnect the power and turn off the fuel source.

2. Remove any remaining fuel in the pump.

3. Clean the pump with a mild detergent and warm water.

4. Flush the pump with clean water.

5. Grease the bearings and any moving parts of the pump.

6. Reassemble the pump.

7. Reconnect the power and fuel source.

8. Test the pump to ensure it is functioning properly.

Fire pump system is made of Electric+Diesel+Jockey pump
Operation: 1 Duty (electric) + 1 standby (diesel engine) + 1 Jockey
Capacity: 100, 150, 200, 300, 400, 500, 750, 1000…GPM with pressure 4, 5, 6, 8, 10… Bar.
Pressure vessel 25, 50, 75, 100…liters, pressure will be 0.6mpa, 1.0mpa, 1.6mpa, select according to pump head.

XBC series diesel engine fire-fighting pump group is a new-style fire-fighting equipment (“equipment” thereafter) developed by this Co. in accordance with GB6245-98 “Performance Requirement and Testing Method of Fire-fighting Pumps” and NFPA20 “Installation of Centrifugal Fire-fighting Pumps” etc. standards and, upon the
fitted fire-fighting pumps (single-stage single-suction type, single-stage double-suction type and sectional multistage type), can be divided into XBC-IS, XBC-S and XBC-D three sub series. The equipment has a wide range of pressure and temperature and can be used for almost every occasion necessary for fire-fighting. The diesel engine fitted with the equipment is an excellent product domestic or imported, features good starting performance, strong overload capacity, compact structure, easy maintenance and use and high degree of automation. The equipment is really a fire-fighting one advanced and reliable in performance. The reasonable use and serious maintenance of the fire pump is the most important prerequisite for ensuring the normal and reliable operation of the pump, giving full play to the emergency function and prolonging the service life. In order to make the pump operator familiar with its structural characteristics, grasp the use and maintenance methods, and make good use of the pump, we have prepared this manual for the operator reference

Last month our customer from Ecuador ordered 2 sets EDJ fire pump set from our factory. The gpm and bar he needs is 350gpm@135psi, and he will use these two fire pump system in his factory.

1. Increase the suction head: Increasing the suction head, or the vertical distance between the suction inlet and the centreline of the impeller, can reduce the chances of cavitation.

2. Increase the impeller speed: Increasing the impeller speed can also reduce the chance of cavitation.

3. Install an air separator: An air separator in the suction line can help remove any entrained air from the system, thus reducing the chance of cavitation.

4. Install a venturi: A venturi installed in the suction line can help create an area of low pressure, which can reduce the chance of cavitation.

5. Install a priming valve: A primer valve can help reduce the suction head and thus reduce the chance of cavitation.

6. Install a vacuum breaker: A vacuum breaker can be used to reduce the pressure in the suction line, thus reducing the chance of cavitation.

7. Improve the suction piping: Improving the suction piping, such as using larger pipes, can reduce the chance of cavitation.

8. Inspect the pump and suction line: Inspecting the pump and suction line for any signs of wear or damage can help reduce the chance of cavitation.

Fire pumps and jockey pumps work together to ensure that a fire protection system is always ready to operate at peak efficiency. The jockey pump is primarily responsible for maintaining the system’s normal pressure, compensating for minor leaks, and preventing the fire pump from running unnecessarily. When a fire occurs, and a significant drop in pressure is detected due to water discharge from sprinklers or hoses, the fire pump is activated to provide the necessary water flow and pressure. This interaction ensures that the system operates efficiently, minimizing wear and tear on the fire pump while keeping the system primed and ready for an emergency.

1.Flow：30-9000 GPM
2.Head： 3-20 Bar 40-300 psi
3.Power：Diesel & Electric Pump:1.5-710kw Jockey Pump:0.55-160kw
4.Speed：740-2900 r/min
The outdoor fire pump set is designed to enhance fire safety in various applications. From powering fire hydrants and stabilizing sprinkler systems to safeguarding residential areas, industrial buildings, and high-risk environments, the Outdoor Fire Pump Set delivers optimal performance and unmatched reliability.