Vertical Multistage Centrifugal Pumps with High quality

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Shanghai
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1 unit
Supply Capability:
500 unit/month

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Product Description:

FEATURES:

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

 

APPLICATIONS:

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:Fire pump control cabinet There are 6 pumps, two indoor fire hydrant pumps, two spray pumps, and two outdoor pumps
Indoor fire hydrant pump in addition to remote direct Kai, there are modules to start function, that is, on the cabinet to add control module, bus linkage pump, but also fire hydrant button, direct pumping function, a total of three functions.Outdoor fire hydrant pump in addition to remote direct Kai, but also an electric contact pressure meter detection system, water pressure from the pump and high pressure pump stop function.
Q:Why does the centrifugal pump close the pressure to start?
The motor power is selected according to the rated flow of shaft power points plus 15 to 25%, if the outlet valve is fully open to start, the pump flow may deviate from the amount of fixed lot, pump efficiency also reduces a lot, resulting in shaft power greater than the motor power caused by tripping even burned electric machine.
Q:What are the meanings of the vacuum pump, the front pump and the main pump?
The main pump can be understood as a booster pump, used to improve the vacuum mechanical pump with pumping quantity. As the roots pump, diffusion pumps, molecular pump. These can not use (too much pressure) so the need for mechanical pump drainage, the vacuum chamber is pumped into the rough vacuum, then the main pump starts to work.
Q:Advantages and disadvantages of centrifugal pumps?
Centrifugal pump; advantages and disadvantages:(1) advantages:The structure of the pump is simple and compact, and the centrifugal pump has small area, light weight, little material consumption and high cost for the foundation. Therefore, the cost of manufacturing and installation is less.For high speed operation, the 2 pole or 4 pole motor can be directly connected. The drive structure is simple and easy to install.
Q:5 floor water pressure is too low, what kind of water pump is better?
Pipe blockage, leaks, or throttling devices are not opened. This can be tested on a pipe with a pressure gauge;Water pump is equipped with power source, power or speed does not match, check the pump and power end nameplate, power end of the pump power is generally 1.1.5 times;
Q:The main factors affecting the performance of centrifugal pumps
Revolutions required to have. It has the following meanings: 1, similar to the geometry of centrifugal pump, everywhere efficiency at the top of the similar condition; centrifugal pump 2, than the number of different, its geometry must be different than the number; the same pump, its shape is similar, but does not rule out the shape similar situation. The following factors are related to specific speed. The specific speed of centrifugal pump has nothing to do with the nature of the conveying fluid, but has a close relationship with the shape of the impeller and the performance curve of the pump. The pump with high specific speed corresponds to the highest efficiency when the flow rate is large and the head is small
Q:What are the advantages and disadvantages of the pump control system and valve control system in the hydraulic system?
Pump control system is generally used for closed systems, the flow of the oil pump changes to control the motor or cylinder actuator action. The utility model has the advantages that the principle is simple, and the power of the engine can be fully utilized. The disadvantage is that the calorific value of larger, relatively poor precision.
Q:Why adjust the centrifugal pump outlet valve can adjust the flow?
This method can be used to regulate flow. The advantage is that it is simple and easy to use and the disadvantage is that the throttle consumes energy
Q:Pump unloading in hydraulic transmission,
Unloading water, from the literal interpretation is along the pump, leakage of water seal through the head, the water with certain pressure (even with relief effect seal). The water as the working quality is asked to be recycled, now the design of some use it as a water seal, and others by direct recovery, but eventually recovered.
Q:Because the water pressure of the booster pump is not enough, it can not work automatically. It can only be operated by hand. It is inconvenient to use.
If the water pressure is not enough, the pump can not start, then it must be wrong. Because if the water pressure is not enough, the pump should be running automatically. It's just because the water pressure is not enough.

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