Vertical Multistage Centrifugal Pumps with high quality

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Vertical Multistage grundfos water Pump is the latest model with the features of energy-saving and less space demand, easy to install and has stable performances.


1. With its 304 stainless steel shell and wear-resistant axle seal, there is no leakage and it can live long service life.


2. With hydraulic equilibrium to balance the axial force, the pump can run more smoothly, less noise, which can be easily installed in same level pipelines, enjoying better installation conditions than DL model.


3. With these features, GDL Pump can easily meet the needs and requirements for water supply and drain foe high building, deep well and firefighting equipments.


Flow range:                                       1.4-1 94.4CBM/h

Head range:                                      20-230m

Speed:                                               2900r/min

Maximal pressure of system:           2.5MPa

Medium temperature:                      -15~°C+120°C

Environment temperature:               ≤+40°C

Motor protection level:                     IP44, IP54

Insulation grade:                              B, F rank

Rotation direction:                           Clockwise



Domestic water supply for buildings

Fire water supply for buildings

Water supply equipments

Water supply for boilers

Water circulation and boosting for industry

Other clean fluid transportation


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Q:What is a vacuum pump for?
You are not confused by different names. It is mainly used in folding machines, paper cutting machines and water treatment aeration
Q:How to select metering pump head?
The main index affecting the selection of the pump head is the composition of the medium to be transported and added, as well as the pressure and the temperature of the external environment
Q:What is the difference between an air pump and a water pump?
Pump performance of technical parameters are flow, suction, lift, shaft power, water power, efficiency, etc.; according to the different principles of work can be divided into volume pumps, vane pumps and other types. Displacement pump is to use its studio volume changes to transfer energy; vane pump is to use the rotating blade and water interaction to transfer energy, there are centrifugal pumps, axial flow pumps and mixed flow pumps and other types.
Q:Why is the flow of the pump too small will occur cavitation phenomenon?
This is because the impeller of the centrifugal pump rotating speed under the drive of the prime mover, when the valve opening decreases, flow rate is too low, can not be taken away by the friction heat generated by the impeller and the liquid completely, make the temperature of the liquid inside the pump. Thus causing liquid vaporization, forming cavitation. Especially in the power plant, the boiler feed pump is more remarkable. Therefore, when throttling regulation, we should set up recirculation system, increase the output flow of the pump to prevent cavitation. When the feed water rate is reduced to 1/3 of the maximum flow rate, the recirculating gate shall be opened so that the flow of the feed pump will be increased properly to ensure that the liquid temperature in the feed pump does not rise.
Q:Common failure treatment of piston pump
Table 15 common troubles and treatment of hydraulic pumpsFault phenomenon, x09 cause analysis, x09 elimination method(1) the pump does not carry oil; the x091. pump does not turn x09 (1); the motor shaft does not rotate1) missed connection power supply2) electrical wiring and component failure, x09 check electrical and troubleshootx09x09 (2) motor heating trip
Q:How is the pump level of submersible sewage pump determined?
Pump water level must be higher than the water pump top, so that the motor running in the lower water temperature cooling environment, otherwise long-term operation will burn the machine
Q:What's the difference between a centrifugal pump and a centrifugal pump? What are they used for?
As the name suggests, centrifuges are machines that achieve centrifugal effects by centrifugal action. And you say the centrifugal pump is only specific, and the same as the pump
Q:What is the cause of the damage of pump bearings?
Is the water pump motor overheating or damaged leaves overheating, resulting in overheating bearings, lubricating oil dry, excessive wear and tear guide system damage
Q:What are the causes of pump shock?
3. the water pump set screws loose, adjust the concentric, fastening the foot4. pump into foreign body, open cover overhaul5. the flow is too large or too small, adjust the equipment to control the water output
Q:Is vane pump good or gear pump good?
The main parts of a gear pump are gears that mesh with each other. The meshing driving gear and the driven gear are respectively arranged on two parallel rotating shafts. Because the gear teeth enter and exit the meshes, the volume of the teeth is changed, and the suction and discharge effect is formed.

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