Bare Shaft End Suction Pump for Firefighting

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Bare Shaft End Suction Pump for Firefighting

1.Bare Shaft End Suction Pump for Firefighting

End Suction Centrifugal Pump complies fully to the European Standard BS EN733 / DIN24255 of performance and dimensions. They are used for pumping clean water or liquids similar to water, achieving wide application on plants, mines, city water supplies, air-conditioning coolers, firefighting system and irrigation. Pumps of the same model have different performance levels basing on different diameter after impeller trimming. Overall the whole series, there are only four sizes of shaft and five of bearing housing. As long as their bearing housings are of the same size, different pumps can interchange chief parts such as shaft, shaft sleeve, shaft seal, impeller nut, etc.

End Suction Centrifugal Pump is also very easy to be installed and maintained. Back pull-out design, driven through flexible coupling, so that pump casing and motor can remain in position while other spare parts are removed.

2.Main Features of Bare Shaft End Suction Pump for Firefighting

very easy to be installed and maintained

Back pull-out design

•Driven through flexible coupling

•Customized design is available, OEM and ODM are welcomed.

•Horizontally and vertically installation as different pipeline system

3.Bare Shaft End Suction Pump for Firefighting Specification



Cast iron

Pump diameter


Flow range


Pressure range


Motor power range


Inlet/outlet Diameter




Cast Iron Standard, Ductile Iron, Stainless Steel Optional


Bronze Standard ,Cast Iron, Stainless Steel Optional


ASTM420Standard,ASTM304,ASTM316,ASTM1045 Optional

Shaft Seal

Mechnical Seal, Gland Pakcing Optional


Flow rate





1450 or 2900(50hz),1750 or 3500(60hz)

Working Pressure

1.6PMa or 2.0PMa


4.Picture of Bare Shaft End Suction Pump for Firefighting

Bare Shaft End Suction Pump for Firefighting



What is your product range?

Centrifugal pump, slurry pump, gravel pump, clean water pump, sewage pump, chemical pump, single stage

pump, double suction pump, industry pump, oil pump, paper pulp pump, mud pump, self-priming pump, pipe

water pump, boiler water pump, etc.

Are you a manufacturer?

Yes, we have been in manufacturing and marketing industry centrifugal pump over 20 years.

What information should I let you know if I want to get a quotation?

Pump capacity, pump head, medium, medium temperature, pump material, quantity, if possible, please also provide the pump model you are using now, price will be calculated as per the pump model, if not, we will recommend relevant product for reference.




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Q:What are the important parameters of the pump?
The head is the unit weight of liquid pump pumping from the inlet of the pump (pump inlet flange) to the outlet of the pump (pump outlet flange) energy value. Effective energy is a Newtonian liquid through the pump unit is obtained. The N m/N=m, the height of liquid column pumping liquid used, referred to as meters.Speed nThe speed is the number of revolutions per unit time of the pump shaft. It is indicated by the symbol n. The unit is r/min.Cavitation allowance NPSHCavitation margin, also called net positive suction head, is the main parameter to indicate the cavitation performance. The cavitation margin has been expressed by delta H at homePower and efficiencyThe power of water pump usually refers to the input power, that is, the power transferred by the prime mover to the pump shaft, so it is also called shaft power. It is expressed by P;The effective power of the pump, also known as the output power, is expressed in Pe. It is the effective energy obtained by pumping the liquid out of the pump in unit time
Q:How many square cables does the submersible pump for 7.5KW need?
I=P/ (1.732Ucos phi) =7.5/ (1.732X0.38X0.85) =13A (calculated according to three-phase city power, power factor 0.85).
Q:Centrifugal pumps for normal operation, is it reasonable to install valves on their inlet lines?
Reasonable, no valve, how to debug, overhaulGenerally installed on imports of valves of relatively large Cv value
Q:What is a feed pump?
In general, high lift pumps are required with a front pump (which is similar to the feed pump of the landlord) or a low position;
Q:What's the meaning of the pump head in the water pump, please advise, thank you
The pump head of the centrifugal pump refers to the shell that contains the impeller and impeller, and also includes the shaft part that drives the impeller. It can be used as the part of the motor and shaft coupling and the base.
Q:Is the sewage pump the same as the mud pump?
No. the main functions are different:1, pump two main performance parameters is the displacement and pressure, displacement from a number of liters per minute, with the diameter and the drilling fluid requirements from the hole on the back end of the speed, the larger aperture, the greater the displacement
Q:If you use an ordinary 15W submersible pump, put it in the tank, if the leakage, the fish will hang it?
Submersible pump even if it really leakage, it will not cause the fish electric shock. The so-called leakage is the submersible pump wire or shell broken, live parts and water contact, the most extreme test is a fire line directly into the fish tank
Q:What is a water pump coupling device?
The water pump coupling device comprises a coupler, a coupling flange, a guide rod and an upper fixing plate, wherein the contact surface of the coupling base and the coupling slide plate is provided with an annular groove, and a soft sealing gasket is tightly fixed on the groove. By adopting the structure, the coupling contact surface of the coupling slide plate and the coupling base is sealed firmly by an annular sealing groove
Q:What are the advantages and disadvantages of the pump control system and valve control system in the hydraulic system?
Valve control system is generally used for open systems, through the proportional valve or servo valve flow changes to control the motor or cylinder actuator action. The advantages of the system are energy saving, heat generation, and control accuracy. The disadvantage is that the system is complex and the cost is higher.
Q:What is the Rhodes pump?
The ultimate vacuum of roots pump depends on the pump structure and manufacturing accuracy, and also depends on the limit vacuum of the front pump. In order to increase the limit vacuum of the pump, the roots pump can be used in series. The working principle of roots pump is similar to roots blower. As the rotor continues to rotate, the gas is pumped from the intake air to the space between the rotor and the pump housing V0, and then discharged through the exhaust port. Since the V0 space is fully enclosed after inhalation, the gas in the pump cavity does not compress and expand. But when the top of the rotor turns off the edge of the exhaust and the V0 space communicates with the exhaust side, the gas pressure at the exhaust side is higher, and a part of the gas flows back into the space V0, causing a sudden increase in the gas pressure. As the rotor continues to rotate, the gas is expelled from the pump. Roots pump in the pump cavity, there are two "8" shape of the rotor perpendicular to each other on a pair of parallel axis, by a transmission ratio of 1 of a pair of gear belt movements synchronous reverse movement of each other. In the rotor, the rotor and the pump housing between the wall to maintain a certain gap, you can achieve high speed operation.

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