Tips about fire pumps

Horizontal multi-stage fire pumps can be used to transport clear water without solid particles and liquids with physical and chemical properties similar to water. It is mainly used in pressurized water supply for fire protection system, heating, bathroom, boiler cold and warm water cycle pressurization, water supply for air conditioning and refrigeration system, and equipment matching and other occasions.

Flow: 30-9000GPM
Head: 3-20Bar
Speed: 740-2900r/min
Frequency: 50 HZ or 60 HZ
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.

Fire pumps are more commonly used in commercial and industrial settings. Residential buildings often rely on municipal water pressure for fire protection. However, in some cases, residential structures with specific design requirements may incorporate fire pumps.

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.

DJ fire pump group is mainly composed of diesel engine and regulator pump, can be selected in the state of no power supply.

Flow-500gpm
Head-8bar
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 pump and the motor are coaxial, which simplifies the connection of the pipeline. The pump inlet and outlet are on the same horizontal axis, and the diameter and specifications are the same. The pump is provided with a mounting base, which is easy to install and increases the stability of the pump operation. The pump seal adopts mechanical seal, which has the characteristics of reliable sealing and no leakage.

It’s a customized EJ fire pump set consisting of electric pump, jockey pump along with control panel, and accessories. It is equipped with priming tank for doing negative suction.

EJ fire pump is composed of electric pump + jockey pump
Those pictures display OTS series electric motor pump. OTS double suction split-case centrifugal pump has a wide range of performance, with the ability for a variety of uses.

The fire pumps produced by our company are suitable for fire protection occasions such as warehouses, docks, airports, petrochemicals, power plants, liquefied gas, textiles, ships, oil tankers and so on.

Instructions for use:
Altitude: ≤1000m;
Ambient temperature: +5℃～+40℃;
Relative humidity: <= 90%.

DJ series fire pump set consists of Diesel pump + Jockey pump and all accessories.
The pressure switch and control cabinet can automatically turn on/off three pumps-the electric pump and jockey pump operate when there is electricity and the diesel pump activates when the power cuts.

Flow: 30-500GPM
Head: 3-20Bar
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.

1.Flow：30-9000 GPM
2.Head： 3-20 Bar
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.

Sizing diesel fire pumps involves evaluating factors such as the building’s occupancy classification, area of coverage, hazard level, and required flow rates for firefighting purposes. Hydraulic calculations are typically performed to determine the water demand and pressure requirements, which are then used to select a diesel fire pump with the appropriate capacity and performance characteristics. It’s essential to work with qualified engineers or fire protection specialists to ensure that the pump is sized correctly for the specific application.

Fire pump sets are often required when the local water system cannot provide sufficient pressure to meet the design hydraulic requirements of the fire sprinkler system. This typically occurs in multi-story buildings or systems that require relatively high terminal pressures at fire sprinklers in order to release large volumes of water, such as storage warehouses. A fire pump is also required if the water supply is provided from above-ground or underground storage tanks.

EDJ fire pump set is composed of electric pump, diesel pump and stabilized pressure pump. In daily use, as an auxiliary pump, the stabilized pressure pump keeps the existence of liquid (water) in the fire pipeline at all times, and the electric pump works as the main power pump in normal work. When the circuit system is burnt out due to a serious fire, the diesel pump will start instead of the electric pump within ten seconds, which will not be affected by the circuit and complete the fire fighting work. In recent years, EDJ fire pump group has gradually become the first choice of fire protection systems in various office buildings and residential buildings, and its safety

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.

Learn how to prevent fire pump cavitation with proper suction design, pump sizing, and maintenance tips to protect your system and ensure reliable performance.

Scope of Performance
Caliber: 65~350mm
Flow Range: 5~250L/s
Pressure: 0.3~1.5MPa
Matching Power: 4~610kW
Working Pressure: ≤1.6MPa

• Automatic switching between three pumps, when the electric fire pump fails, the diesel engine backup pump will automatically start
• Works even with power outages
• Adopt high-quality NSK bearing, wear-resistant mechanical seal or packing seal
• Product parameters available upon request

XBD series fire pump sets are mainly used for fire hydrant fire extinguishing systems and automatic sprinkler fire extinguishing systems in fixed fire protection systems of various enterprises, institutions, engineering construction, high-rise buildings, etc. The chemical properties are similar to the medium of water, and it can also be used for fire protection, living, production, public water supply systems and buildings, municipal water supply and drainage, 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

This high-performance fire jockey pump unit is engineered with a compact structure and robust functionality, making it ideal for installations where space is limited but consistent water pressure is critical. Its integrated design ensures a small footprint and easy installation and maintenance, perfectly suited for high-rise buildings, commercial complexes, and industrial plants.

Powered by a high-efficiency electric motor and managed through an intelligent control panel, the system enables automatic start-stop functionality and constant pressure operation, keeping your fire protection system in standby mode at all times. The pump body is made of corrosion-resistant materials to accommodate various water conditions, ensuring long-term durability. Equipped with multiple safety protection features, it is a reliable, energy-saving, and intelligent solution for modern fire protection systems.

Many people buy fire pumps for the first time and don’t know how to choose a fire pump. They know very little about fire pumps and don’t know how to choose. So today, on the issue of fire pump selection, here is a explanation for everyone to help you better choose a more competitive fire pump.

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.

A multistage pump refers to a pump with two or more impellers, which can absorb and press water in multiple stages, so as to lift the water to a high position. The lift can be increased or decreased according to the needs of the pump impeller. The multistage pump can be equipped with a four-stage motor by increasing the number of impellers when the single-stage pump head needs to be equipped with a two-stage motor, which can improve the service life of the pump and reduce the noise of the unit.

Zjbetter Brand Fire Pump Skid 500 gpm @7 bar with cummins diesel engine 46 kw shipped to Tanzania got a high value in Africa market.

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.

Fire water pump refers to the water supply pump used to ensure the system pressure and water volume in the fire water supply system. The fire pump transfers energy to the water through the rotation of the impeller, thereby increasing the kinetic energy and pressure energy of the water, and transporting it to the fire extinguishing equipment to meet the water volume and water pressure requirements of various fire extinguishing equipment. Such as fire hydrant pumps, sprinkler pumps, fire transfer pumps, etc.

The minimum fire rated pressure of ED small fire fighting package set water supply equipment is 3 bar and the minimum fire rated capacity is 25 GPM. ED small fire fighting package set water supply equipment includes at least two power or power source driven pumping units, pressure tanks, pipes, valves and accessories, measurement and control instruments, control cabinets, outdoor rain cover, etc.
Motor: Three-phase asynchronous squirrel-cage motor independently developed and manufactured by our company, which can be controlled in production time and greatly shorten the whole set production time.
Diesel Engine: According to the different parameters of customers, we will choose diesel engines with high cost performance ratio. The main brands are QuanChai, Weichai, ShangChai, FAWDE, Cummins, etc.
Electric Pumps: Electric pumps can use vertical in-line pumps, horizontal end-suction pumps, vertical multi-
stage pumps, horizontal multi-stage pumps, split casing pumps and so on according to the different flow and head of customers.
Diesel Pumps: Diesel pumps can use vertical in-line pumps, horizontal end-suction pumps, vertical multi-
stage pumps, horizontal multi-stage pumps, split casing pumps and so on according to the different flow and head of customers.
Electronic Components: The main electric components is CHNT, if Schneider or other brand electrical are need, should mention it before place the order.
Safety Valve plays a safety protection role in the system. When the system pressure exceeds the prescribed value, the safety valve opens, and a part of the gas/fluid in the system is discharged into the atmosphere/pipeline, so that the system pressure does not exceed the allowable value, so as to ensure that the system does not cause accidents due to excessive pressure.
Pressure Tank: Water is a non-compressible medium. Generally speaking, the pressure drop of fire-fighting pipe network is normal. However, the pressure drop is very slow, the total loss of water in the pipe network isnot large, and the frequent change of pressure in the pipe network leads to frequent start-up and shutdown of pumps. Especially when the power of equipment is high, it will cause great impact on pressure sensors, relaysand motors, thus affecting the performance and life whole equipment. Therefore, it is necessary to choose the right volume of the pressure tank.

Diesel engine fire pumps can choose ductile iron and 304/3116 stainless steel materials, which can meet various special use conditions and technical requirements of users, and diesel engine fire pumps can be matched with different brands of diesel engines to ensure stable performance of diesel engine fire pumps. Long service life, high degree of automation.