What considerations are necessary for jockey pumps in cold climates?

We may encounter fire disasters in our lives. Once these things happen, we must take corresponding remedial measures, so fire extinguishing is an inevitable measure. At this time, fire pumps play an important role in fire extinguishing.

The equipment is a diesel engine fire pump with a flow rate of 500gpm and a pressure of 70m customized by a Nigerian customer. The pump is suitable for fire protection occasions such as warehouses, docks, airports, petrochemicals, power plants, liquefied gas, textiles, ships, oil tankers, etc.

This is a set of EDJ fire pump set, which consists of electric pump + diesel pump + jockey 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

Industrial manufacturing plants often deal with hazardous materials, heavy machinery, and complex processes, making fire safety a critical concern. Fire pumps are essential in these facilities for delivering sufficient water pressure to fire suppression systems like sprinklers, standpipes, and specialized suppression systems, such as foam or gas-based systems used for chemical fires. Jockey pumps help maintain pressure in these extensive systems, ensuring they are always ready to activate immediately. In many industrial plants, fire pumps need to handle large volumes of water to cover expansive areas like production floors, storage facilities, and hazardous material zones. Additionally, fire suppression systems must be designed to address specific risks, such as oil-based fires, electrical hazards, or flammable chemicals. Fire pumps in these environments require regular maintenance and testing to ensure they remain reliable, especially given the high risk of equipment malfunction or accidents in such settings. Integrating the fire pump system with automated fire detection systems, alarms, and emergency response protocols is critical for minimizing damage and protecting workers in the event of a fire.

The engine cooling system of the diesel engine fire pump adopts double closed-loop heat exchangers. The system has the advantages of high cooling efficiency and little impact on the ambient temperature of the pump room. The cooling water flow direction is controlled by a ball valve from the pump outlet pipe to the heat exchanger, so that the cooling water temperature of the machine body is between 85 and 95 °C. If the water temperature is too high, you can increase the opening of the ball valve, increase the heat dissipation capacity of the heat exchanger, and reduce the temperature of the engine cooling water.

There are many types of multi-stage fire pumps, especially multi-stage fire pumps are more popular. Multi-stage fire pumps are a multi-functional product that can transport tap water and different liquids of various media, and can also be used in different Within the temperature range, different flow rates and different pressures can use multi-stage fire pumps. The application range of multi-stage fire pumps is very wide. It can be used in many industries such as petrochemical industry, medicine and food.

Discover the efficiency and system integration benefits of split case fire pumps in high-flow fire protection scenarios. This article highlights advanced hydraulic design, stability, intelligent control, and easy maintenance—ideal for skyscrapers, petrochemical sites, and data centers.

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.

The EEJ Fire Pump System is an innovative solution designed to enhance fire safety in various settings. With exceptional performance and efficiency, the EEJ Fire Pump System delivers high pressure and large flow capacity, enabling rapid and effective fire suppression. Its intelligent features, including real-time monitoring and remote control capabilities, contribute to the system’s reliability and ease of operation. Overall, the EEJ Fire Pump System is a reliable choice for safeguarding lives and properties, making it an ideal fire protection solution for commercial buildings, industrial facilities, and residential areas.

This advanced fire pump system delivers stable pressure, rapid start-up, and reliable water supply for diverse fire protection applications. Designed with high-efficiency components, intelligent control, and durable construction, it ensures long-term safety performance for commercial, industrial, and municipal facilities.

EDJ fire pump after packaged
250gpm 10bar EDJ fore pump set

Learn the required methods for fire pump testing, including weekly churn tests and annual flow tests, to comply with NFPA 25 and ensure peak performance.

DJ Fire Pump Set The fire pump set consists of a pump connected to the diesel engine, pressure jockey pump, pressure vessel, controller for manual or automatic operation of the system and standard accessories mounted on the base. The fire pump system can be customized for different uses, such as high-rise buildings, facilities, hospitals, supermarkets, shopping malls, villas, apartments, etc.

·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

The diesel engine fire pump set has the characteristics of high degree of automation, superior performance, complete protection functions, reasonable structure, simple installation, and high cost performance. When the factory suddenly fails, the diesel engine emergency water supply pump set will automatically start to supplement the pressure of the pipe network.

Diesel engine fire pump is also called “engineering diesel engine fire pump set”. The diesel engine fire pump set has the characteristics of good starting characteristics, strong overload capacity, compact and reasonable structure, convenient maintenance, simple and reliable use, etc. The unit is equipped with protection functions such as overspeed, low oil pressure, three start failures, high water temperature, low oil level, and low battery voltage. It can completely meet the fire water supply in various occasions of warehouses, docks, airports, petrochemicals, power plants, liquefied gas stations, textiles and other industrial and mining enterprises.

The function of the diesel fire pump is very powerful. We can set the control time during use, for example: preheating in advance, pre-lubrication or timing start. The use of high technology has made some complicated and time-consuming things easier. The preheating setting in advance has greatly reduced the preparation time for rescue, allowing firefighters to rescue at the first time. In the face of disasters, time is money, time It is life.

·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

1.Flow: 50-5000GPM
2.Head: 3-20Bar
The EEJ Fire Pump System is an innovative solution designed to enhance fire safety in various settings. With exceptional performance and efficiency, the EEJ Fire Pump System delivers high pressure and large flow capacity, enabling rapid and effective fire suppression.Overall, the EEJ Fire Pump System is a reliable choice for safeguarding lives and properties, making it an ideal fire protection solution for commercial buildings, industrial facilities, and residential areas.

The fire pump unit is composed of a fire water pump, a double shaft extension motor and a diesel engine. One end of the output shaft of the double shaft extension motor is connected to the input shaft of the fire water pump, and the other end of the output shaft of the double shaft extension motor is connected to a One end of the clutch is connected, the other end of the clutch is connected with the output shaft of the diesel engine, and the fire water pump, the double-shaft extension motor, the clutch and the diesel engine are all fixed on the base. The double-shaft extension motor, the clutch and the diesel engine are respectively electrically connected with a control circuit through an action drive circuit. With dual-power fire pumps, there is no need to configure a second fire pump, which reduces floor space and saves manufacturing costs.

EDJ fire pump has the characteristics of high efficiency, wide performance range, safe and stable operation, low noise, long life, convenient installation and maintenance. For conveying clean water or other liquids similar to water in physical and chemical properties.

As the core component of a fire protection system, the performance of fire pumps directly affects fire suppression efficiency. To ensure optimal performance, we maintain strict control over every stage, from design and manufacturing to installation and maintenance.

In the design phase, we utilize advanced fluid dynamics technology to optimize the pump structure, minimizing energy loss and maximizing water flow efficiency. The carefully designed impeller and flow channels enable the pump to maintain stable operation under high pressure while reducing noise and vibration, thereby extending its service life.

During the manufacturing process, we select high-strength, corrosion-resistant materials such as stainless steel and ductile iron to ensure durability in harsh environments. Precision machining and rigorous quality inspections guarantee that every fire pump meets industry standards before leaving the factory.

Proper installation is equally critical. Our professional team develops the best installation plan based on the site environment, ensuring tight pipe connections, smooth water flow, and stable electrical control system operation. The integration of intelligent control systems allows for automatic start-stop functions and remote monitoring, significantly improving response speed and operational convenience.

Finally, regular maintenance and inspection are essential for long-term efficiency. Our comprehensive after-sales services include routine inspections, spare parts replacement, and remote troubleshooting, ensuring the pump remains in peak condition.

Through scientific design, high-quality manufacturing, expert installation, and thorough maintenance, our fire pumps provide reliable fire protection solutions, helping to build highly efficient and secure fire suppression systems.

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.

Diesel engine fire pumps are large-scale fire pumps. Diesel engine fire pumps are currently the hottest fire pumps on the market, especially in large warehouses, docks, airports, petrochemicals, power plants, and liquefied gas stations. This kind of fire pump with large flow and high power is often needed.

The dual-power fire pump system combines diesel engine and pressure-stabilized electric control for enhanced firefighting performance and reliability in high-risk industrial, commercial, and remote locations.

EJ Fire pump set Fire pump set consists of one main pump coupled to electric motor, one stand by pump coupled to diesel engine, jockey pump, pressure vessel, controller for manual or automatic operation of system and standard accessories mounted on base frame.This fire pump set can be used for fire hose and fire hose reel system, fire sprinkler system, fire water monitor system, fire alarm system and fire hydrant system.

The EDJ model is basically a combination of Electric, Deisel and Jockey pumps. They mainly consist of an electric motor driven end suction pump and a backup pump of a diesel engine driven end suction pump. It is also combined with a jockey pump for maintenance to form a complete skid.
The complete EDJ style skid is assembled with all discharge line fittings and connected to the skid mounted control panel.

Discover the importance of automatic start functions in fire pumps for rapid emergency response and NFPA 20 compliance.

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 EDJ Fire Pump Set includes diesel engine pumps, electric pumps and jockey pumps.
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.

The fire pump unit can be classified according to the following rules:
1 according to the form of power source, it can be divided into:
A) diesel engine fire pump unit
Motor fire pump unit
C) gas turbine fire pump unit
D) gasoline engine fire pump unit
(2) it can be divided into:
A) water supply fire pump unit
Stabilized pressure fire pump unit
C) hand lift motorized fire pump unit
3. According to the auxiliary characteristics of the pump unit, it can be divided into:
A) common fire pump unit
Deep well fire pump unit
C) submersible fire pump unit
The above is the basic classification, but various types can be combined with each other, such as medium and low pressure fire pumps, high and low pressure vehicle fire pumps, ordinary fire pump sets, electric submersible fire pump sets, etc