Why do firefighters use multistage pumps?

Diesel engine fire pump unit is a kind of pump equipment that is widely used in fire protection, and it is more suitable for mobile work in fire pumps. In fact, it is driven by a diesel engine connected to the pump head of the fire pump. Compared with motor drive, it can be used in the field, mines, and places lacking power supply. It is also called a diesel engine pump or a diesel engine fire pump unit.

·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 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.

·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 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. With its lightweight and portable design, coupled with versatile functionality, the EDJ Diesel Engine Fire Pump System is suitable for various scenarios. Whether you are part of a fire department or an industrial enterprise, the EDJ Diesel Engine Fire Pump System is your indispensable rescue partner.

The lifespan of a fire pump motor or engine varies based on factors like usage, maintenance, and the quality of the equipment. However, they are typically designed to be durable and long-lasting.

ISW 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.
In addition, according to different operation temperatures and mediums, we developed the hot-water pump(ISWR), corrosion-resistant chemical pump(ISWH) and oil pump (ISWB). This pump enjoys excellent performance, good reliability, long operation life, reasonable construction and nice appearance, which is outstanding in the industry.

3 sets 100gpm 7bar EDJ fire pump set

1. Fire hydrant fire extinguishing system and automatic sprinkler fire extinguishing system in fixed fire protection systems of various enterprises and institutions, engineering construction, high-rise buildings, etc.
2. High-rise building partition fire water system, fire and living, production and shared water supply system and buildings, municipal, industrial and mining, boiler water supply and other occasions.
3. Fire-fighting system pressurized water supply, water supply plants, irrigation, drainage pumping stations, power stations, air-conditioning circulating water, industrial water supply systems, fire-fighting systems, shipping industry, oil refining systems, mining and other liquid transportation.
4. Fire water supply and emergency water supply in docks, warehouses, airports, petroleum, chemical, power plants, liquefied gas, textiles, ships, oil tankers, etc.

Fire pumps are mainly used for pressurized water delivery in firefighting system pipelines, and can also be used in industrial and urban water supply and drainage, high-rise building depressurized water delivery, long-distance water delivery, heating, bathrooms, boiler cold and warm water circulation pressurized air conditioning refrigeration system water delivery and equipment matching, etc.

Flow: 30-9000 GPM
Head: 3-20Bar
Speed: 740-2900r/min
Material: HT200, SS304, Bronze
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.

Diesel engine fire pump set is a new type of fire-fighting equipment developed by our company in strict accordance with the national standard GB6245-98 “Fire Pump Performance Requirements and Test Methods” and the American Fire Protection Association standard NEPA20 “Installation of Centrifugal Fire Pumps” and other standards (hereinafter referred to as equipment ), this series of equipment can be divided into three sub-series, XBC-IS, XBC-SLOW, XBC-D, etc. The equipment has a wide range of pressure and flow, and its application can almost meet various occasions required by fire protection.

The EDJ fire pump unit is suitable for various fire boosting and pressure stabilizing pump occasions; various villas, residential areas and other fire protection systems; industrial and civil building fire protection systems; suitable for various oil depots, oil loading and unloading docks, logistics parks and other fire protection levels demanding places.

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.

In fire protection systems that include fire hydrants, jockey pumps play a key role in maintaining the necessary system pressure to ensure hydrants are immediately ready for use. Fire hydrants are typically located throughout a property or a city to provide easy access to water for firefighting efforts. The jockey pump helps maintain a consistent pressure in the piping network that supplies these hydrants, ensuring they are always charged and ready to deliver water when a firefighter opens them. This is especially important in systems with extensive piping networks, where pressure fluctuations could occur due to minor leaks, thermal expansion, or water usage. By keeping the system pressurized, jockey pumps help ensure a rapid response during a fire emergency, providing critical support to firefighting operations.

A fire pump controller manages the operation of the fire pump, including starting, stopping, and monitoring performance. It ensures the pump operates correctly during an emergency and complies with NFPA 20 requirements.

Fire pumps are mainly used for pressurized water delivery in firefighting system pipelines, and can also be used in industrial and urban water supply and drainage, high-rise building depressurized water delivery, long-distance water delivery, heating, bathrooms, boiler cold and warm water circulation pressurized air conditioning refrigeration system water delivery and equipment matching, etc.

The fire pump is mainly used for water delivery in the fire protection system. As an indispensable tool for the fire protection system, the fire pump has the characteristics of simple structure and stable performance. Due to these advantages of high performance and low energy consumption, the safety and efficiency of the fire pump are far ahead of the pipeline tools of the same purpose.

Leakage failure in a fire pump refers to the undesirable escape of fluid, typically water, from the pump or its associated components. It is a critical issue that can hinder the performance and reliability of the fire pump system. Here are some key aspects of leakage failure in a fire pump:

Causes of Leakage: These include worn or damaged seals, gaskets, or O-rings, improper installation or tightening of connections, corrosion or erosion of pump components, and excessive vibration or misalignment.

Effects on Performance: Leakage compromises the efficiency and effectiveness of the fire pump system.

Safety Risks: Leakage failure poses safety risks to personnel and property.

Maintenance and Inspection: Regular maintenance and inspection are crucial for preventing and addressing leakage failure.

Corrective Actions: When leakage is detected, prompt action should be taken to rectify the issue.

Addressing leakage failure in a fire pump system is essential for maintaining its reliability and performance. By implementing regular maintenance practices, conducting thorough inspections, and promptly addressing any signs of leakage, the risk of failure can be minimized, ensuring the fire pump operates optimally and provides reliable water supply during critical firefighting situations.

EDJ-ISW fire pump is composed of electric pump + diesel engine pump + jockey pump. It is suitable for fire water, but also for industrial city water supply and drainage, high-rise building pressurized water supply, long-distance water supply, heating, bathroom, boiler cold and warm water circulation pressurization Air-conditioning refrigeration system water supply and equipment matching and other occasions.

Fire sprinkler systems are hydraulically calculated prior to installation to determine adequate water flow and in order to ensure the system can reliably suppress a fire until fire crews arrive. When it’s determined inadequate flow is available from a municipal supply for the system to operate effectively, a fire pump is installed. The fire pump operates when the sprinkler system pressure drops below a certain threshold, due to the operation of sprinkler heads. The fire pump draws additional water from the municipal water supply or on site storage tanks, to maintain the sprinkler systems required operating pressure. Fire pumps are often required in high rise construction and large area buildings, due to the size of piping systems and pressure loss.

Yes, fire pumps can be essential in remote or rural areas where a dedicated water supply for firefighting may not be readily available. They can draw water from natural sources or dedicated water tanks.

EDJ fire fighting equipment consists of electric pump + diesel pump + jockey pump. Both the electric pump and the diesel pump use a multistage jockey pump with large flow and high lift. The diesel engine can be started without electricity. It is suitable for any fire protection occasion. The company has a professional sales and production team, and the choice of pumps can be customized according to their own needs.

Proper design and installation of suction and discharge piping are vital for the efficient operation of a fire pump system. The suction piping connects the fire pump to the water supply source, while the discharge piping carries water from the pump to the fire protection devices.

Key considerations for these piping systems include the sizing, material selection, and routing. Proper sizing ensures that water can be drawn from the source at the required rate, and the piping material must be compatible with the water and the environment. Piping routing should minimize friction losses and ensure that the system operates without cavitation or other issues.

When the fire pump is in operation, if the power supply of the motor fire pump power supply is turned off or the electric pump fails to start normally, the diesel engine fire pump will automatically start and run. During normal operation, there is a fully automatic switchover to an electric pump.

Fire pumps play a pivotal role in fire protection systems by ensuring a reliable and pressurized water supply for firefighting efforts. When a fire breaks out, immediate access to water at a sufficient flow and pressure is critical to containing and extinguishing the flames. In many cases, the water supply provided by municipal water mains may not be adequate, necessitating the use of fire pumps to boost water delivery to firefighting equipment.

Fire pumps are especially crucial in large industrial or commercial buildings, as they ensure that every corner of the facility has access to water for firefighting. Without fire pumps, there might be inadequate pressure or flow, resulting in a delayed response, potentially leading to greater fire damage.

The diesel engine (can be equipped with a clutch) is combined with the fire pump through a highly elastic coupling to form a fire pump unit. The unit also includes diesel tanks, cooling water tanks, fans, control panels (for automatic units) and other components.
When the unit is automatically controlled, the split or diesel engine automatic control cabinet (programmable) realizes the automatic start, input, and automatic switching of the system (switching from the electric pump group to the diesel engine pump group or from this group of diesel engine pump groups to another group of diesel engines) pump set), automatic protection (diesel engine overspeed, low oil pressure, high water temperature, three start failures, low oil level, low battery voltage and other alarm shutdown protection) and other functions, and can also interface with the user’s fire center or automatic fire alarm device, Realize remote monitoring.

This is a set of 250gpm @ 8bar fire pump sets. 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.

What are the components of the fire pump group
1. Electric pumps: various end suction pumps and split case pump.
2. Jockey pump: vertical, small flow, head higher than electric pump or diesel pump.
3. Control panel: Automatically control the water pump, with overload and overcurrent protection functions.
4. Accessories: suction pipe, discharge pipe with flange, battery, gate valve, check valve, expansion joint, pressure switch, pressure gauge, base, 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