The difference between diesel multistage fire pump and single-stage fire pump

Diesel engine fire pumps are relatively common equipment that are often used in fire protection systems. Of course, the first thing we consider when purchasing a pump station is to choose the manufacturer, not only because of the high cost-performance, but also because the manufacturer has the characteristics of customization on demand, according to customer needs, to select the functions to customize the fire pump group.

Diesel engine fire pump sets are mainly suitable for fire water supply and foam fire extinguishing systems in petrochemical, natural gas, power generation, cotton and linen textiles, warehouses, airports, docks, high-rise buildings and other industries. It can also be used in occasions such as water ships, offshore oil tankers and fire fighting ships. The unit adopts imported diesel engine and fire pump. It has the characteristics of quick start, reliable water diversion, reasonable power reserve, stable operation, high degree of “three modernizations”, wide range of pressure and flow, etc. It is an advanced and reliable fire-fighting equipment.
Rational use and careful maintenance of the pump set is an important prerequisite to ensure the normal and reliable operation of the pump set, give full play to the emergency function and prolong the service life. In order to make the pump set operators familiar with its structural features, master the use and maintenance methods, and make good use of the pump set, we have compiled this manual for the reference of the set operators.

The XBC-IS Diesel Fire Pump Set is a versatile solution suitable for a wide range of applications. From hotels, hospitals, and sports arenas to chemical plants, refineries, metallurgical facilities, energy plants, and pharmaceutical companies, this pump set ensures reliable fire protection. It is also ideal for shopping malls, commercial complexes, office buildings, and high-end residential towers. Whatever the setting, the XBC-IS Diesel Fire Pump Set delivers dependable performance to safeguard lives and properties from fire risks.

Fire pump room installed with units should be as close as possible to the pool, the water intake pipeline of the water part should be as short as possible, and the elbows should be as few as possible to reduce the resistance of the water intake. And ensure that the unit space is spacious enough for the operation and maintenance of the unit. Pump house should have hoisting equipment and thermal insulation measures to ensure that the lowest temperature of pump house (> 5 Celsius) is prepared before the pump is installed, and that the foundation can bear the weight of the pump group.

Flow:2000GPM
Head:12Bar
The XBC-OTS Diesel Engine Fire Pump finds wide application in various locations and buildings, including factories, commercial buildings, residential complexes, hospitals, airports, ports, and more. Whether serving as the primary firefighting water source or a backup water supply, it offers reliable support to your firefighting equipment and systems.

The main advantage of the hand-held diesel fire pump is the high lift, which can reach 90 meters. It is generally used for fire emergency fire prevention, forest emergency fire prevention, and factory fire protection. When the diesel engine fire pump is working, the auxiliary impeller is together with the pump main shaft Rotating, the liquid in the auxiliary impeller will also rotate together, and the rotating liquid will generate an outward centrifugal force. On the one hand, this centrifugal force resists the liquid flowing to the mechanical seal, reducing the pressure at the mechanical seal. On the other hand, it prevents the solid particles in the medium from entering the friction pair of the diesel engine fire pump seal, reduces the wear of the mechanical seal grinding block, and prolongs its life. The auxiliary impeller of the diesel engine fire pump can not only play a sealing role, but also reduce the axial force. In the diesel engine fire pump, the axial force is mainly caused by the pressure difference force of the liquid acting on the impeller and the gravity of the entire rotating part. The direction of action of these two forces is the same, and the resultant force is formed by the addition of the two forces.

Diesel engine multi-stage fire pump set is in accordance with the national standard GB6245-2006 “Fire Pump Performance Requirements and Test Methods”. This series of products has a wide range of head and flow rate, which can meet the fire water supply in various occasions of industrial and mining enterprises such as warehouses, docks, airports, petrochemicals, power plants, liquefied gas stations, and textiles. The advantage is that the electric fire pump cannot be started after the power system of the building suddenly loses power, and the diesel engine fire pump is automatically started and put into emergency water supply.

Flow：80-4000 GPM
Head：3-15 Bar
Power：11-1000 kw
The Diesel Single-stage Single-suction Fire Pump is a versatile solution suitable for a wide range of applications. From hotels, hospitals, and sports arenas to chemical plants, refineries, metallurgical facilities, energy plants, and pharmaceutical companies, this pump set ensures reliable fire protection. It is also ideal for shopping malls, commercial complexes, office buildings, and high-end residential towers. Whatever the setting, the Diesel Single-stage Single-suction Fire Pump delivers dependable performance to safeguard lives and properties from fire risks.

1. Automatic start: After the diesel engine pump unit receives a fire alarm/pipe network pressure/power failure/or other start-up signals, it can start automatically within 15 seconds and be put into full-load operation;
2. Automatic charging: the battery can be automatically charged by the mains or diesel engine charging motor to ensure the smooth start of the unit;
3. Automatic alarm: automatic alarm protection for diesel engine low oil pressure, high water temperature and other faults, and alarm and stop when the speed is exceeded again;
4. Automatic preheating: keep the diesel engine in a hot standby state to ensure emergency work;
5. Direct connection type: The diesel engine pump unit below 360kw adopts the first domestic direct connection technology between the diesel engine and the water pump through the elastic coupling, which reduces the failure points, greatly shortens the starting time of the unit, and increases the reliability and emergency performance of the unit ;
6. Users can also request to set other alarm outputs (non-standard supply);
7. With telemetry, remote signaling and remote control functions (non-standard supply);
8. The equipment is powered by X6135, 12V135, 4102, 4105, 6102 and other series diesel engines. The diesel engine (with clutch) is connected with the fire pump through a highly elastic coupling to form a fire pump group. Fans, control panels (for automatic units) and other components.
9. When it is an automatic control unit, the split diesel engine automatic control cabinet (programmable) realizes the automatic start, input and automatic switching of the system (the electric pump group is switched to the diesel engine pump group or the diesel engine pump group of this group is switched to another group. Diesel unit), 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.
10. In order to ensure the normal operation of the unit in an environment below 5°C, the unit can be equipped with an AC220V cooling water preheating heating device.
11. Diesel engine fire pump can form an automatic fire water supply system with electric pump group, stabilized pump, etc.
There are two water inlet methods for fire pumps: self-irrigation and suction. According to the requirements of fire protection regulations, it is generally self-irrigation. If the user needs to absorb two kinds of water, according to the requirements of fire protection regulations, it is generally the method of self-irrigation and water diversion. If the user needs to suck up the water inlet system, special instructions are required so that the company can provide an automatic vacuum water diversion device, but the size of the pump set has changed.

Flow：80-2700 GPM
Head：10-24 Bar
Diesel Engine Multistage Fire Pump is a versatile and reliable firefighting solution designed for a wide range of applications. Whether it’s industrial facilities, commercial buildings, residential complexes, or public infrastructure, Diesel Engine Multistage Fire Pump ensures effective fire protection. With its robust design and advanced features, this pump set is ready to tackle emergencies and safeguard lives and properties in various firefighting scenarios.

The intelligent diesel engine fire pump products produced by our company are equipped with an unattended intelligent system as standard. The product has the characteristics of mature technology, high degree of automation, superior performance, complete protection functions, reasonable structure, simple installation and high cost performance. At the same time, in order to meet the different needs of users and reasonable investment, the products are divided into multiple application series such as fire pumps, industrial emergency pumps, agricultural water pumps, marine water pumps, trailer mobile water pump stations, etc., which can be linked and switched with electric fire pumps. Supporting water pumps: single-stage fire pump, multi-stage fire pump, single-stage split double-suction fire pump.

The diesel engine irrigation pump is easy to move. According to customers’ requirements, it can be combined freely to realize the fuction of small flow fire pump set.

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 set cannot be put into use normally, the diesel engine fire pump set can be put into operation automatically 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.

Vertical turbine pump is a kind of centrifugal water pump, which is used to deal with non-corrosive clear water at normal temperature. The main working part is the impeller, which can generate centrifugal force through high-speed rotation to achieve the function of lifting water. In a group of cases, it only needs to match the head, flow rate, power and other requirements. There will be no problem.

Diesel fire pump has the characteristics of high efficiency, wide performance range, safe and stable operation, low noise, long life, easy installation and maintenance.

·UL Standard:
Flow：50-2000 GPM   
Head： 80-250 PSI 
·NON-UL  Standard:
Flow：50-5000GPM 
Head： 40-250 PSI 

Flow：50-5000 GPM
Head：3-16 Bar
Power：11-1000 kw
Frequency：50 or 60 Hz
The XBC-ISO pump set is suitable for emergency firefighting scenarios, particularly ideal for high-rise water supply, building firefighting, central air conditioning water circulation, industrial process system circulation, cooling systems, boiler water supply, industrial water supply and drainage, water plant supply, irrigation in plantations, and more.

XBD, XBC electric fire pump units and diesel engine fire pump units meet the national standards GB6245-1998 “Fire Pump Performance Requirements and Test Methods”, GB/T1147-1987 “General Technical Conditions for Internal Combustion Engines”. They can be equipped with ISG, IS, S, D and other pump types respectively, forming various structural types such as pipeline type, vertical multi-stage, horizontal single-stage cantilever type, horizontal split, horizontal multi-stage, etc., to be suitable for various working conditions Use under different conditions (different power, different speed, different materials, etc.).

XBD and XBC units are mainly suitable for fire protection engineering of steel, metallurgy, electric power, petroleum, chemical industry, construction, port and other operations, emergency water supply for blast furnace, continuous casting, converter and other accidents, power plant emergency water supply for power failure, nuclear reactor safety protection cooling water supply, And other water supply projects that require automatic control.

The XBC-OTS Diesel Engine Fire Pump is an essential equipment in firefighting systems, designed to meet emergency firefighting needs. Whether during power outages or in the absence of electricity supply, it provides reliable water supply and increases firefighting water pressure to ensure smooth firefighting operations.The XBC-OTS Diesel Engine Fire Pump finds wide application in various locations and buildings, including factories, commercial buildings, residential complexes, hospitals, airports, ports, and more. Whether serving as the primary firefighting water source or a backup water supply, it offers reliable support to your firefighting equipment and systems.

The XBC-OTS 330kw Diesel Engine Fire Pump is an essential equipment in firefighting systems, designed to meet emergency firefighting needs. Whether during power outages or in the absence of electricity supply, it provides reliable water supply and increases firefighting water pressure to ensure smooth firefighting operations.The XBC-OTS Diesel Engine Fire Pump finds wide application in various locations and buildings, including factories, commercial buildings, residential complexes, hospitals, airports, ports, and more. Whether serving as the primary firefighting water source or a backup water supply, it offers reliable support to your firefighting equipment and systems.

The pictures show standy pump which is a part of EDJ fire pump set. It’s diesel engine fire pump. The type of pump is horizontal centrifugal pump.

Flow：250-10000 GPM
Head：3-16 Bar
Power：11-1000 kw
The XBC-OTS Diesel Engine Fire Pump finds wide application in various locations and buildings, including factories, commercial buildings, residential complexes, hospitals, airports, ports, and more. Whether serving as the primary firefighting water source or a backup water supply, it offers reliable support to your firefighting equipment and systems.

The Diesel Engine with Mixed Flow Pump is an advanced firefighting and rescue equipment. This combination consists of a robust diesel engine and an efficient mixed flow pump, offering advantages such as independent power supply, high performance, agile mobility, versatility, and cost-effectiveness. During sudden fire emergencies, the Diesel Engine with Mixed Flow Pump operates autonomously, requiring no external power source, and rapidly provides a substantial water supply to minimize fire damage. Its exceptional mobility allows firefighters to swiftly transition and address ever-changing disaster scenarios. It is suitable for various environments, especially in areas with unstable power supply, where it maintains its peak efficiency. Moreover, this equipment is cost-effective, easy to maintain, and offers long-lasting firefighting assurance.

1. Natural ventilation When setting up and arranging diesel machine fire pumps, it’s first necessary to consider adequately sized ventilation openings and exhaust openings, and secondly, to insure that there’s enough fresh air to supply diesel machine combustion within the temperature limit. In this way, the heat of the circulating cooling water can be taken down by the water force radiator to take down the heat radiated from the face of the unit.

2. Forced ventilation when the natural ventilation conditions can not be met, forced ventilation can be espoused. Inlet suckers and exhaust suckers can be installed at the reflections. The addict specifications and the position of the air bay and outlet in the machine room should be named to give enough cold air for the diesel machine. At the same time, the hot air in the pump room is taken down, and the small air input volume of the unit needs to be about 6- 7 times that of the diesel machine air input.

3. Arrange grooves and seamsters By arranging seamsters around the unit foundation and arranging mountain grooves in the middle of the unit foundation, the purpose of this is to grease the flushing of sewage and diesel oil painting, thereby icing the sanitation of the pump room.

All places need to be equipped with fire-fighting facilities, and fire pumps are the water intake equipment for fire-fighting facilities. At least one or two fire pumps are equipped. Our commonly used fire pumps are electric fire pumps and diesel engine fire pumps. The difference between them is that electric fire pumps require power systems. supply. In case of power failure, the diesel engine fire pump can be started at any time to make up for the original position of the electric fire pump.

Key Selection Factors:
Battery Type: Sealed lead-acid (SLA) and nickel-cadmium (NiCd) are common choices for reliability.
Capacity & Cold-Cranking Amps (CCA): Ensure the battery has sufficient power to start the diesel engine in all conditions.
Charging & Maintenance: Use a dedicated battery charger and test regularly to prevent failures.

It can be started without electricity to replace the electric pump to complete the work，The viscosity is higher than that of gasoline, which is not easy to evaporate and saves fuel.The pressure and flow range of the equipment can meet the needs of all fire-fighting occasions.

A self-priming pump is able to overcome the problem of air binding by mixing air with water. After it gets rid of the air, the pump will continue to move water like a standard centrifugal pump.It is important to note that self-priming pumps can’t operate without water.Self-priming pumps can handle a variety of fluids and they do well with slurries, corrosive fluids, and solids.Solids handling is one of its most important advantages, as some self-priming pumps can handle solids up to 3 inches.Another advantage, when compared to a submersible pump, is its ability to continue pumping fluid while pump is still situated out of the pit.

The diesel engine fire pump has the characteristics of good start-up, strong overload capacity, compact structure, convenient maintenance, simple use and high degree of automation. It is a kind of fire fighting equipment with reliable performance.

Flow：50-5000 GPM
Head：3-16 Bar
Power：11-1000 kw
Frequency：50 or 60 Hz
The Diesel Engine End Suction Fire Pump set is suitable for emergency firefighting scenarios, particularly ideal for high-rise water supply, building firefighting, central air conditioning water circulation, industrial process system circulation, cooling systems, boiler water supply, industrial water supply and drainage, water plant supply, irrigation in plantations, and more.