Features and principles of horizontal multistage fire pump

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. With smart controls and automatic switching mechanisms, the transition between electric and diesel engine pumps is seamless, minimizing system downtime. Equipped with advanced safety features, including monitoring and alarm systems, real-time status updates allow for prompt action in case of any irregularities.

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.

Electric fire pumps can be located inside the building. Office buildings and apartments are often equipped with electric fire pumps. In addition, upper floors sometimes install an additional electric fire pump above ground or basement to increase water pressure.

ISO series centrifugal pump is a single-stage single-suction centrifugal pump developed by China Better Technology Co., Ltd. with reference to international similar products using modern fluid mechanics to meet the international standard ISO9908 secondary energy efficiency standard.
This product combines the strengths of similar products in China and abroad and is designed with excellent hydraulic models, therefore, its excellent hydraulic performance and structural features ensure that the user can effectively reduce the operating cost of the pump in various applications.

Firefighting pumps can be powered by various sources, including gasoline engines, diesel engines, electric motors, and even hydraulic systems. The choice of power source often depends on factors such as portability, availability of fuel, reliability, and specific application requirements.

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.

What is a jockey pump? While its name may remind you of one of those little guys that tells a race horse where to go, a jockey pump is actually used to maintain a high pressure in a fire suppression system.

Using Instruction:
Altitude ¡Ü 1000m;
Ambient temperature: +5 ¡ãC ~ +40 ¡ãC;
Relative humidity: <= 90%. Application Scope: Equipment for warehouses, docks, airports, petrochemical, power plants, liquefied gas, textiles, ships, oil tankers and other occasions of a fire service.

·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

In the fire fighting pipeline pump, according to the different installation methods can be divided into vertical fire pumps and horizontal fire pumps, many people have questions about these two common pumps, what is the difference between the two? Shanghai Xizhiquan will explain the difference between horizontal and vertical pumps.

Obviously, different installation methods take up different space. Vertical pipeline pumps are installed vertically, covering a relatively small area, and vertical fire pumps do not require a foundation, while horizontal fire pumps need to be equipped with a base.

According to the different structures of the two pumps, it can be concluded that there is also a certain difference in the ease of maintenance of the two types of fire fighting pipeline pumps. The impeller of the vertical fire pump needs to be dismantled from top to bottom, which makes maintenance more difficult; the horizontal fire pump only needs to have the inlet pipe removed so that the impeller can be overhauled, which is relatively simple.

Due to the different inlet and outlet pipe directions, the pipeline connection between vertical and horizontal is also different. As the vertical pump is a bottom-up structure, while the horizontal fire pump is longitudinally arranged on the base, so the motor of the vertical pump and the pump body are connected in the form of sub-mouth connection, while the horizontal pump needs to use couplings to connect with the motor, and the horizontal pipeline pump needs to be corrected regularly.

Translated with www.DeepL.com/Translator (free version)

DJ (diesel pump + jockey pump) Fire Pump Set
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.

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.

We can manufacture fire pumps that are NFPA20 compliant and UL listed.
Fire pumps can function with electric motors or diesel engines, and if local building codes require electricity independent of the local grid, pumps using electric motors can use the installation of an emergency generator when connected through a transfer switch listed.

The electric fire pump unit is mainly used for fire hydrant fire extinguishing, automatic sprinkler fire extinguishing and other fire extinguishing systems of industrial and mining enterprises, engineering construction, high-rise buildings and other fixed fire extinguishing systems. It can be used to transport clear water without solid particles and media similar to water in chemical properties. It can also be used in common water supply systems for living and production, as well as construction, municipal water supply and drainage, etc.

Fire pumps work by drawing water from a water source (such as a dedicated water tank or municipal supply) and pressurizing it before delivering it to the fire sprinkler system or hose lines.

The electric fire pump set is an important fire pump equipment, usually in a horizontal state. Each pump group is composed of five parts: front pump, electric motor, hydraulic coupling, main feed water pump, lubricating oil device (including lubricating oil cooler and working oil cooler. In normal state, two sets are running, one There are two standby pumps, and any feedwater pump set can be used as a standby pump. When one of the two running pumps stops due to an accident, the standby pump will be put into operation automatically.

30HP EJ fire pump product process

Problem one lower water or no water
1, electric pump reversal will lead to the pump doesn’t produce water.
2, the pump can’t normal water into the same can’t be water, check whether the water bay or check stopcock is blocked or stuck, pumping pipe if there’s a leak will also affect the water into the water.
3, the pump internal corridor of the wear and tear or connection out, check the pump and motor coupling wear and tear, loose and impeller is worn.

Problem two ：
1 、 Check the power force as described over, including connectors, switches, fuses,etc.
2. Check whether the impeller in the pump is jammed by foreign objects
3. A burnt motor will also affect the launch of the pump.

Problem three the water affair is big for a while and small for a while
1. still, the lack of depth down the well may beget this problem, If the pump is a submersible pump.
2. The inflow rate of the pump is too high and needs to be replaced with a suitable pump.

The diesel engine fire pump can deliver clean water below 80°C without solid particles or liquids with physical and chemical properties similar to water. Under the premise of meeting the fire protection conditions, the requirements of living and production water supply conditions are taken into account. The products can be used not only in independent fire-fighting water supply systems, but also in fire-fighting and living shared water supply systems, as well as in construction, municipal, industrial and mining, water supply and drainage, ships, field operations and other occasions.

·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

Single-stage fire pumps have only one impeller, and multistage fire pumps can have two or more impellers. Because the pump core in them is different, the structure is different. The impeller of the multi-stage pump is more than that of the single-stage pump, which can achieve a larger head at the same flow rate. The multi-stage pump is the sum of the single-stage pumps, and the head and outlet pressure can be made very high.

This integrated electric fire protection solution combines a high-efficiency pump, an intelligent control panel, and an advanced monitoring system, designed to meet the demands of diverse and complex environments. Its modular design not only allows for quick installation and easy maintenance but also ensures that the equipment can consistently provide sufficient firefighting water pressure in various applications, including high-rise buildings, municipal projects, and industrial parks.

Featuring energy-saving electric drive technology, the system is equipped with automatic start-stop functions and remote monitoring capabilities, which allow real-time adjustments to operating conditions and guarantee a rapid response in the event of a fire. With strict quality control and a design that complies with international standards, this equipment delivers exceptional durability and safety, making it the ideal solution for building intelligent and efficient fire protection systems.

EDJ fire pump set is composed of electric pump + diesel pump + jockey pump. The pump set adopts ISO pump,ISO series centrifugal pump is a single-stage single-suction centrifugal pump developed by China Better Technology Co., Ltd. with reference to international similar products using modern fluid mechanics to meet the international standard ISO9908 secondary energy efficiency standard.
This product combines the strengths of similar products in China and abroad and is designed with excellent hydraulic models, therefore, its excellent hydraulic performance and structural features ensure that the user can effectively reduce the operating cost of the pump in various applications.

The equipment is designed to have one duty and one standby function. The main electric pump runs normally, and the standby diesel pump starts automatically after the main pump fault . The Jocky pump will start and stop based on the pipe pressure, Control panel site start.

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.

Application Scope
Equipment for warehouses, docks, airports, petrochemical, power plants, liquefied gas, textiles, ships, oil tankers and other occasions of a fire service.

Using Instruction
Altitude: ≤ 1000m;
Ambient temperature: +5 °C ~ +40 °C;
Relative humidity: <= 90%.

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 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.

product description:
EDJ fire pump set consists of diesel engine fire pump, electric pump set and stabilized pump to form an automatic fire water supply system
1. Electric pump, single-stage pump, horizontal split pump, end-suction pump, multi-stage pump, the material is cast iron or stainless steel, and the impeller can be made of copper impeller
2. Diesel engine pump, the flow rate is the same as that of the electric pump. The diesel engine is connected by a highly elastic coupling or a universal joint to form a fire pump set. The set also includes fuel tanks, water tanks, fans, control panels and other components.
3. Stabilizer pump, horizontal or vertical, small flow, higher lift than electric pumps and diesel pumps
4. Control cabinet, automatic control of electric pump, diesel engine pump and stabilized pump, with overload, overcurrent protection
5. The accessories include check valve, gate valve, air pressure tank (0.6mpa, 1.0mpa, 1.6mpa), pressure gauge, pressure sensor, common inlet and outlet pipeline, soft joint, flange and common base.

The diesel engine fire pump is usually used as a backup facility, so it will only start automatically when the fire signal comes, and when the electric water pump fails or the power supply is cut off. When it has an ultra-low pressure start-up device, the matching electric water pump control cabinet should also have an ultra-low-pressure start-up device, and the lower limit of the two pumps should have a certain pressure difference. Of course, according to customer requirements, design a control system that is more suitable for customer needs.