What factors should be considered when selecting a firefighting pump?

Fire pumps have a wide range of uses. In addition to providing water for fire-fighting piping systems, they can also be used for industrial water delivery. Fire pumps can also be used for water supply and drainage systems in cities. There are also other relatively long-distance water delivery tasks, such as heating boilers, hot and cold water circulation pressurization of bathroom boilers and multi-stage fire pump furnaces, etc., can all be completed by means of fire pump systems.

Flow:13-1300 GPM
Pressure:2-20 BAR (30-290 PSI)

The fire pump set is composed of a diesel fire pump and an electric fire pump. The pump set is a horizontal, single-suction, single-stage centrifugal pump. It has the characteristics of high efficiency, wide range of performance, safe and stable operation, low noise, long life, convenient installation and maintenance, etc. It is used to transport clear water or other liquids whose physical and chemical properties are similar to water. It can also be used to transport hot water, oil, corrosive or abrasive media by changing the material of the pump’s flow parts, sealing form and adding a cooling system.

First, what’s a water pump? It’s a device used to transport liquid, pressurize the liquid, and make the liquid from the first liquid position to the high liquid position. The first water pump constructed by the Chinese is called” water windmill”. latterly, around 300 BC, the emergence of the” Archimedes screw pump” is more analogous to ultramodern pumps. In addition, the following introductory knowledge points are what you must understand.
1. Centrifugal pump

Centrifugal pump is the most common type of pump. In simple terms, the working principle of centrifugal pump is to rotate the impeller to drive the liquid under the action of centrifugal force. The liquid leaves the impeller and enters the volute. As the inflow passage of the volute gradationally expands, the fluid haste slows down, and the pressure rises continuously, and eventually it’s discharged through the conduit.
2. Impeller
The impeller is one of the main factors in the water pump, and it’s the core element that transmits mechanical energy to the liquid. The impeller is substantially divided into three types open type,semi-open type and closed type. The material conditions for the impeller are high, wear resistance is needed, and the manufacturing process is good.

3. Cavitation

Cavitation is the conformation of numerous bitsy recesses when the liquid connections the liquid under high- speed inflow and pressure, and gradationally expands into grottoes when serious, and cavitation frequently occurs in the impeller and pump covering.

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. The jockey pump maintains a constant water pressure, optimizing the performance of the fire suppression system. The DJ Fire Pump Set offers a reliable and efficient solution for prompt response to fire incidents, making it an essential component for protecting property and ensuring occupant safety.

Fire pump is a general term for special pumps involved in water supply of various fire systems. The fire pump model is XBD. Fire pumps must be tested and approved by relevant national units before they can be used in various fire protection systems in buildings, such as: fire hydrant system, sprinkler fire extinguishing system, foam fire extinguishing system, large space high-altitude water cannon, water mist fire extinguishing system, rain shower fire extinguishing systems, water curtains, etc.

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.

ED small fire pump set (referred to as ED small fire complete set of water supply equipment) refers to a highly integrated electromechanical system with a flow rate of less than 100GPM and composed of electric centrifugal pumps, multi-stage centrifugal pumps (booster pump sets), diesel engine centrifugal pumps, pressure limiting protection Device (safety valve), valve fittings, control system, pressure sensor system, waterless protection device, backflow preventer, soft joint, bypass pipeline, common base, filter, etc. It is a fire-fighting water supply equipment that continuously supplies water to the fire-fighting pipe network at a preset pressure.

The electric fire pump set is a fire pump powered by an electric motor, and generally consists of a set of fire pumps, electric motors, control cabinets and auxiliary devices. Because the electric motor fire pump set is composed of these parts, it forms a powerful fire protection and power effect, and provides a strong water source support for various fire hydrant systems and sprinkler systems in the building.

The diesel engine with right-angle gearbox combination is a high-performance power transmission solution widely used in various industrial applications. It features a diesel engine as the primary power source and a right-angle gearbox for efficient power redirection and speed matching. This compact and reliable duo enhances production efficiency, reduces energy consumption, and provides a stable power source for industrial automation and ship propulsion systems. Its adaptability to diverse climate conditions and load demands further reinforces its significance in modern industries.

The product is EJ fire pump set. The EJ fire pump set has one electric pump and one jockey pump. The electric pump in the picture is XA pump. XA series horizontal single-stage single-suction centrifugal pump is a new generation of energy saving, environment friendly horizontal centrifugal pump researched and developed by our company, which absorbs advanced technology of similar products abroad and adopts domestic general performance parameters of centrifugal pumps.

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.

Common issues with firefighting pumps include priming failures, leaks, clogs, engine or motor problems, and inadequate water supply. Troubleshooting steps may include checking for obstructions, inspecting hoses and connections, verifying fuel and oil levels, and consulting the pump’s manual for troubleshooting guidance.

1.Flow：1000 GPM
2.Head： 14 Bar
The EDJ Diesel Engine Fire Pump System is a powerful and reliable firefighting equipment designed for fire suppression and emergency rescue operations. It boasts high-performance capabilities in water extraction and pressure delivery, enabling rapid supply of large volumes of water. The system operates independently, ensuring its reliability even in challenging situations.

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 Diesel Engine Fire Pump System is a powerful and reliable firefighting equipment designed for fire suppression and emergency rescue operations. It boasts high-performance capabilities in water extraction and pressure delivery, enabling rapid supply of large volumes of water. The system operates independently, ensuring its reliability even in challenging situations.

The application of fire pumps is not only in fire protection systems, but a variety of fire pumps are gradually showing their superior strength in industrial production and urban construction. This includes the implementation and expansion of high-end technologies for industrial and urban water supply and drainage, and high-rise water supply under pressure.

Horizontal and vertical fire pumps differ in their physical orientation, and the choice between them depends on the available space and installation requirements. Horizontal fire pumps are positioned parallel to the ground and are commonly used in facilities with ample floor space. Vertical fire pumps, on the other hand, are designed to be installed in a space-saving, vertical orientation. This makes them suitable for facilities with limited floor space, such as high-rise buildings.

Vertical pumps are often used in skyscrapers, where space is at a premium. Both types of pumps are equally effective, and the choice between them is typically influenced by the layout and structural constraints of the building.

Diesel engine with mechanical emergency fire pump has the advantages of light weight, small size, flexible movement, quick start, fast water discharge time, large fuel tank capacity, corrosion resistance, reliable use, and convenient maintenance. Where batteries are allowed to be used, the unit can be installed and used with a battery starting device. The diesel engine is vertical, multi-cylinder, four-stroke, water-cooled. It can also be matched according to the requirements of air cooling.

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 is a powerful and reliable firefighting equipment designed for fire suppression and emergency rescue operations. It boasts high-performance capabilities in water extraction and pressure delivery, enabling rapid supply of large volumes of water.

Key Factors to Consider:
NPSHa vs. NPSHr: The Net Positive Suction Head Available (NPSHa) must always exceed the Net Positive Suction Head Required (NPSHr) to prevent cavitation.
Elevation & Water Source: Pumps drawing from underground tanks or reservoirs need to account for elevation changes and friction losses.
Pipe Sizing & Layout: Use properly sized pipes and minimize bends to reduce suction losses.
Compliance with NFPA 20: Follow recommended practices for suction piping to ensure smooth operation.

DJ fire pump set is suitable for fire protection occasions such as warehouses, docks, airports, petrochemicals, power plants, liquefied gas, textiles, ships, oil tankers, etc.

Fire pumps generate heat during operation, and preventing overheating is essential to maintain their efficiency and longevity. This article explores various cooling methods for fire pumps, including air cooling, water cooling, and heat exchangers. It highlights the role of cooling systems in preserving pump performance.

EJ fire pump set producting
150gpm 7bar electric fire pump with jockey pump
Assemble in our workshop

diesel fire pump set, also known as a diesel engine-driven fire pump, is a type of fire pump system used for fire protection in buildings, facilities, and industrial settings. It is designed to provide water at high pressure and flow rates to fire sprinkler systems, standpipe systems, and other fire protection equipment in the event of a fire emergency. Diesel fire pump sets are an essential component of fire protection systems, especially in areas with unreliable or insufficient electric power supply.

EEJ Fire pump set
Flow:100gpm
Head:17bar
This pump uses horizontal multistage pump.
We manufacture in strict accordance with customer requirements. All products will be tested before leaving the factory to ensure that there are no problems. The design meets the national standard of general packaging, meets customer needs, and standard handling and transportation.

Fire pumps are primarily designed for structural fire protection, and their use in wildfire prevention is limited. However, water pumps and other firefighting equipment may be employed for vegetation fire control in specific situations.

The EJ (Electric pump + Jockey pump) 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.

Diesel engine fire pumps are often used for emergency water supply in high-rise buildings, water companies, steel plants, wineries, chemical plants, hotels, hospitals, and other large-scale projects. Diesel engine fire pump is suitable for unattended emergency water supply system. The product has the characteristics of advanced technology, high degree of automation, superior performance, complete protection functions, reasonable structure, simple installation, and high cost performance. net pressure.

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.

Scope of application of fire pump set:
1. Industrial plants, automobiles, breweries, pulp and paper, chemicals, pharmaceuticals;
2. Government offices, embassies, military bases, administrative buildings;
3. Commercial buildings, high-rise buildings, hotels, office buildings, warehouses;
4. Various institutions, hospitals, labor camps, sanatoriums, schools;