How do fire pumps adapt to varying water supply conditions?

Fire pumps are part of the water supply to a fire sprinkler system and are powered by electricity, diesel or steam. The pump inlet is either connected to a public groundwater supply or to a static water source (e.g. tank, reservoir, lake). This pump provides higher pressure water flow to sprinkler system risers and hose risers. Our company can manufacture fire pumps that meet NFPA20 standards.

Diesel engine-driven fire pumps are designed and manufactured in accordance with GB “Fire Pumps”. Comply with CCCF certification requirements. The advantage of its product is that when a fire occurs, the power supply fails, and the electric fire pump group cannot be put into use normally, the diesel engine fire pump group can be automatically put into operation to ensure the normal fire fighting. Compared with the electric fire pump set, the second advantage is that it does not need long-term investment in power supply, saving the mains power supply transformer and normal expenses. Diesel engine fire pumps are equipped with various automatic functions to meet customer requirements, ensure long-term normal standby status of the equipment, and put it into fire fighting work at any time. The diesel engine fire pump set is also suitable for various emergency backup pump occasions.

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.

If the person on duty in the fire control room cannot start and stop the fire pump manually after the fire occurs, it will delay the timing of emergency rescue and fire extinguishing. Today ZJBetter is here to explain how to switch the working status of the electrical control cabinet of the fire pump, manually start and stop the pump group on site and remotely, so that everyone can use the fire pump to extinguish the initial fire source or slow down the fire before the fire rescue comes.

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

The EJ Fire Pump Set is combined an electric pump and a jockey pump.

A diesel engine main pump. a jockey pump(used in the place where the pump runs entirely through the diesel engine)

Diesel engine fire pump, as a fixed fire extinguishing equipment, has been widely used in fire diversion, especially in the case of no power supply or abnormal power supply and other emergencies, other diesel engines can also be equipped as power engines according to the needs of users.

ED Fire pump system is made of Electric pump +Diesel pump
Operation: 1 Duty (electric) + 1 standby (diesel engine)
Capacity: 25, 30, 50, 100, 150, 200, 300, 400, 500, 750, 1000…GPM with pressure 4, 5, 6, 8, 10… Bar.
Pressure vessel 25, 50, 75, 100…liters, pressure will be 0.6mpa, 1.0mpa, 1.6mpa, select according to pump head.

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.

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.

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.

The jockey pump of the jockey fire water supply system must be kept running at ordinary times to maintain the pressure of the pipe network. When a fire occurs, it should still be able to run for a period of time until the main fire pump is started. It must be set according to the main and standby pumps. pressure pump. Due to the need for the stabilizing pump to keep running, energy is wasted, and the stabilizing pump is in working condition for a long time.

The diesel fire pump set is easy to maintain, has a high degree of automation, reliable performance, and a wide range of equipment pressure and flow. XBC type automatic diesel engine fire pump set, as a fixed fire extinguishing equipment, has been widely used in fire diversion, especially in fire water supply under unexpected circumstances such as no power supply or abnormal power supply (mains power).

Diesel engine fire pumps are relatively common in life, and their performance requirements are relatively high. In ordinary use, more attention should be paid to maintenance, so as to prolong the service life of the pump. Because diesel fire pumps are not omnipotent, there will be some problems in daily use, so when choosing equipment, we must pay attention to whether the quality of the equipment meets the national standards. As fire equipment, all kinds of equipment must be To ensure performance, avoid affecting use in disaster situations and delaying rescue.

Jockey pumps are smaller pumps that maintain pressure in the fire protection system between tests and activations. They prevent pressure loss in the system and ensure that the fire pump doesn’t start unnecessarily. Jockey pumps are crucial for system reliability.

The fire pump can be installed in multiple ways according to the on-site use conditions. And depending on the flow and head requirements, the required flow and head are increased in parallel and series. The bearing adopts low-noise closed bearing, which has been injected with grease before leaving the factory, which can ensure continuous operation for more than two years, and the components have high concentricity. The pump impeller has good performance. Dynamic balance, no vibration in operation, and improved use environment. The pump shaft seal is a mechanical seal, which solves the serious leakage of conventional centrifugal pump packing, increases the service life, and ensures that the operating site is clean and tidy.

The parts that may cause friction when the pump rotates are all made of wear-resistant, corrosion-resistant and high-anti-seize material combinations to ensure reliable operation, reduce noise, and avoid rust water, blocking spray and other fire-fighting devices, extending service life and after shutdown. Rust bite phenomenon.

EDJ electric diesel fire pump set is the pump used for various fire hydrants and sprinkler fire main pumps; it 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 ;Applicable to various oil depots, oil loading and unloading docks, logistics parks and other places with high fire protection requirements.

XBC diesel engine fire pump set is the latest according to the national standard GB6245-2006 “fire pump performance requirements and test methods”. This series of products has a wide range of lift and flow, and can fully meet the fire water supply in various occasions such as warehouses, docks, airports, petrochemicals, power plants, liquefied gas stations, textiles and other industrial and mining enterprises.

Fire pump installations in historical buildings may have unique considerations to preserve the architectural integrity. Compliance with historical preservation guidelines and coordination with relevant authorities is crucial.

Fire pumps work by drawing water from a water source (such as a storage tank or a dedicated water supply) and then increasing the pressure to deliver water through the fire sprinkler system or hoses. They are typically powered by electric motors or diesel engines.

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.

The diesel engine fire pump has the characteristics of good starting performance, serious load operation, compact structure, time-saving and labor-saving maintenance, simple application, and high level of automatic control technology. It is a security monitoring device with reliable performance.

A fire pump starts when the pressure in the fire protection system drops below a set threshold, indicating water flow caused by sprinkler activation or manual use of a fire hose. The pressure drop is detected by pressure-sensing devices, triggering the fire pump to activate and provide adequate water pressure.

EEJ fire pump group consists of two electric pumps + one jockey pump, the electric pump adopts XA pump.XA series single-stage centrifugal pump is the earliest single-stage single-suction centrifugal pump product launched by Better (China) Technology Co., Ltd.
This product combines the advantages of similar products in China and abroad, and is designed with excellent hydraulic model. Therefore, its excellent hydraulic performance and structural characteristics ensure that users can effectively reduce the operation cost of pumps in various applications.

1. Increase the suction head: Increasing the suction head, or the vertical distance between the suction inlet and the centreline of the impeller, can reduce the chances of cavitation.

2. Increase the impeller speed: Increasing the impeller speed can also reduce the chance of cavitation.

3. Install an air separator: An air separator in the suction line can help remove any entrained air from the system, thus reducing the chance of cavitation.

4. Install a venturi: A venturi installed in the suction line can help create an area of low pressure, which can reduce the chance of cavitation.

5. Install a priming valve: A primer valve can help reduce the suction head and thus reduce the chance of cavitation.

6. Install a vacuum breaker: A vacuum breaker can be used to reduce the pressure in the suction line, thus reducing the chance of cavitation.

7. Improve the suction piping: Improving the suction piping, such as using larger pipes, can reduce the chance of cavitation.

8. Inspect the pump and suction line: Inspecting the pump and suction line for any signs of wear or damage can help reduce the chance of cavitation.

1.Flow：1000 GPM
2.Head：14bar
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 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.

Air in a centrifugal pump usually occurs because of a suction issue. Air can be introduced into the pump either because of a piping issue, such as low water level, or an internal issue, such as incorrect impeller clearance. To prevent air from entering the inlet pipe and pump body, the piping should be checked to ensure it is properly sealed and the pump should be regularly inspected to check impeller clearance.

Diesel engine fire pump has the advantages of light weight, small size, flexible movement, fast start, fast water discharge time, large fuel tank capacity, corrosion resistance, reliable use, convenient maintenance, fast automatic start, self-starting, and can be refueled after dry operation . Heavy-duty pump bearings last longer; other components are made of high-quality copper and stainless steel or customer. Diesel engine fire pump high efficiency open impeller design can handle large solids and abrasives while maintaining high flow rates and high volume air handling for use in more “well point dewatering projects”.

Diesel engine fire pump is a kind of fire-fighting equipment that we often see and often use in our life. The diesel engine fire pump has the characteristics of good starting performance, strong overload capacity, compact internal structure, convenient maintenance, simple operation and high degree of automation. It is a very reliable fire fighting equipment.