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Submersible sewage pump installation

Two commonly used methods of installation Diving sewage pump installation conditions are simple, traffic coverage is larger, from 10m3 / h below to several thousand m3 / h, is the water treatment works, especially small and medium-sized projects in the most commonly used one of the lifting equipment. Diving sewage pump common installation there are two main: coupling installation and mobile installation. The coupling type is through the coupler to connect the pump and the pipeline, the pump and the outlet pipe is easy to disengage, the pump can be lifted by the lifting device. Coupled installation for a variety of submersible sewage pump, submersible sewage pump is the most commonly used installation, the coupler by the equipment manufacturers complete sets of supplies. Mobile installation refers to the pump outlet pipe directly connected to the water through the hose, submersible sewage pump by self-resetting at the bottom of the pool or through the chain, etc. hanging on the lifting device. Mobile installation without coupler and the bottom of the fixed, easy to move, maintenance can even be linked with the pipeline. At the same time due to the installation of the reasons, it is difficult to bear the big torque, only for small submersible sewage pump.

China professional submersible pump manufacturer - Shanghai Weihu pump,We provide cheap high-quality sewage pump and submersible pumps, welcome to wholesale submersible pump; we will provide you the best service

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What is the main purpose of submersible pumps

The submersible pump is assembled from the submersible motor and the submersible pump into a unit, or the submersible motor shaft is directly attached to the pump components. The pump is integrated into the underground water or in the river, river, lake, ocean water and other places. The It has the advantages of small volume, light weight, no water diversion before starting, no suction limit, no need for another pump house, easy installation and installation, reliable performance, high efficiency, low price and economical investment. Widely used in the underground or rivers, lakes in the water, agricultural irrigation and drainage, urban water supply and drainage, industrial and mining enterprises to the drainage, urban and rural construction drainage, residents living water, urban or wide sewage sewage treatment, hotel hotels sewage, Chemical industry and other industries pulp transport, farm sewage, sewage treatment, mining, drainage, sewage and salt water transport and salt water, brine transport and other occasions; can also be used for offshore oil extraction platform to extract seawater for washing, cooling and Fire for the thermal power plant water supply, pressurization, ship water supply, pipeline pressurization and seabed mineral collection and other special occasions.  Diving motor can be used as a variety of underwater machinery supporting power source, such as bridges and building exploration drilling machine drive motor, a variety of underwater inspection of marine propulsion power source.

Shanghai Weihu Pump is a modern enterprise with joint-stock system as product, scientific research, development, design, production and sales. As a professional water pump manufacturer , wholesale submersible water pump,  choose Weihu Pump, we are committed to you Procurement to provide professional consultancy services to ensure that you buy the right model, the right material, cost-effective pump products, if you have other aspects of the problem, you can call our technical experts, experts will give a professional answer.

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Methods of improving the life of submersible pumps

To improve the life of the submersible pump method: 1, submersible pump if not long-term use, should be timely submersible pump from the pool, and emptying the pump water, especially in the cold winter. And then placed in a dry place, the conditions of the user can also focus on the pump part of the butter, in the bearing with lubricants to prevent corrosion of parts. In addition, the pump's non-use period, not the longer the better. If you do not use for a long time, not only easy to rust parts, but also reduce the life of the pump. 2, for the start of the submersible pump should do some necessary checks: the rotation of the pump shaft is normal, with or without stuck; impeller position is normal; cable and cable plugs with rupture, abrasion and breaking phenomenon. Operation should pay attention to observe the voltage changes, the general control of the rated voltage within ± 5% range. In addition, the location of the submersible pump in the water is very important, should be selected as far as possible in the water, no silt, good water quality, vertical suspension in the water, not allowed to cross, so as not to fall into the mud or suspended plugs pump imports, Which led to the sharp drop in water or even pumping the water.

China professional submersible sewage pump manufacturer - Shanghai Weihu pump, welcomed the new and old customers in our company custom wholesale submersible pumps, wholesale sewage pump.

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How to improve the anti - wear performance of stainless steel submersible pump

Improve the anti-wear properties of stainless steel submersible water pumps material is a fundamental measure to solve the sediment wear. The use of very wide range of water pumps, most of its components made of cast iron, ordinary cast iron anti-sediment wear is poor, abrasive fast, short life, in order to seek better anti-wear properties of the material, at home and abroad have done a lot of anti- , Stainless steel in the corrosion resistance of stainless steel is better, but the price is high, not easy to promote the use of other wear-resistant materials are ductile iron and manganese, steel, such as cast iron. China's production of SP-type sand pump, the use of No. 1 and No. 2 wear-resistant cast iron, the wear resistance than ordinary cast iron increased 4.2-13 times.    In non-metallic materials, there is enhanced expectations, it is not only resistant to lungs and smooth walls, light weight, has now begun to be used in the manufacture of pumps, is an important direction for future development; In addition, metal ceramics, Of the new materials are also developed in the pump manufacturing; another wear-resistant rubber, such as grasping rubber CR, natural rubber N, R, etc., can be used as pump shell lining, or spray on the blade surface to prevent erosion. For the case of high sediment concentration in the water, a special sand pump or suction pump should be used.

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Diving sewage pump overload reasons

The reason for the overload of the submersible sewage pump 1, the power supply voltage is too low     Submersible sewage pump in rural areas below the rated voltage of the operating conditions, the stator winding in the current increase more, resulting in stator winding temperature rise more and overheat burned. 2, diving sewage pump improper selection     The actual use of the load conditions and the choice of submersible pump does not match the form; selected submersible sewage pump head is too high or too low. 3, mechanical failure    Submersible sewage pump bearings are severely damaged, the stator and the rotor friction "sweep chamber" or pump impeller by aquatic plants and other debris stuck and other mechanical failure will cause the submersible sewage pump stator winding burned. 4, the quality factor in the manufacturer or repair    Diving sewage pump manufacturer and repair the quality of the cause of submersible pump overload.

China professional submersible sewage pump manufacturer - Shanghai Weihu pump, welcomed the new and old customers in our company custom wholesale submersible water pumps, wholesale sewage pump.

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Fountain dedicated pump selection note points

Fountain dedicated pump selection note points Fountain dedicated pump is a fountain in the fountain project must have a fountain equipment, select the appropriate fountain dedicated pump can make the fountain to achieve the desired design effect. Fountain dedicated pump selection principle 1, the selected fountain dedicated pump, the flow and head should be fountain system design flow and design of the head is basically the same, and when the work point changes, the pump is always working in the high efficiency range, will not produce cavitation or overload the power machine. 2, fountain dedicated pump size and number of units are mutually constrained. Fountain dedicated pump selected large, the efficiency is high, the installation of small number of equipment, civil engineering and management costs can be reduced accordingly; However, the number of units can not be too small, or a pump failure, a great impact on the whole system. Generally to install 2 to 4 units is appropriate. When the system design flow is small, you can also set only one fountain dedicated pump, but should be equipped with a sufficient number of vulnerable parts. Sprinkler pump station generally do not set the spare fountain dedicated pump. 3, if there are several pump models can meet the fountain system design flow and design requirements of the head, you should choose one of the high efficiency, supporting power is small, easy to operate, maintenance, and fountain system, the total investment of the kind of pump The  4, the same fountain system installed fountain dedicated pump, as much as possible models, such as: ① easy to manage and parts replacement; ② to adapt to automation and semi-automatic control; ③ make a single pumping station structure. 5, if the existing fountain pump model can not meet the fountain system design flow and design requirements of the head, can be used in series, parallel and variable speed method to solve. 6, as far as possible to choose a good fountain fountain dedicated pump, which simplifies the pump structure, reduce pumping station investment, to ensure the safe operation of the unit has a great impact. Take the centrifugal pump as an example. If the pump is allowed to absorb the vacuum height value is large, and the water level change is not large, you can use simple, by the brick structure composed of sub-base pump room; the other hand, you must switch to the more complex, Reinforced concrete and masonry mixed structure composed of dry room pump room. 7, recommended the use of Guoyou and Buyou products and access to national production license products and energy-saving products, to avoid the use of eliminated products. Fountain dedicated pump selection must meet the fountain system design requirements, including fountain system design flow requirements and design requirements of the head, only to meet these requirements in order to achieve the design results.

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Structure and Characteristics of QS submerged Fountain Pump

Structure and Characteristics of QS Diving Fountain Pump QS submersible pump for the flushing submersible pump, the pump for the pump type. The submersible submersible motor structure is divided into two types: one is to use a group of water lubricated sliding guide bearings and water lubricated thrust bearings to support the structure of the rotor, the other is a group of grease lubrication Rolling bearings support the structure of the rotor. At present the mass production of QS submersible pump is basically on the pump structure. A QS diving fountain roller bearing support structure A typical representative of a submersible pump supported by a grease-lubricated rolling bearing is a QS submersible pump, which is an up-pump submersible pump. The current mass production of QS submersible pump typical structure. 1, QS diving fountain pump structure The upper part of the QS submersible pump is a submersible pump part, including impeller, pump body, pump cover, pipe joint and pump seat (water section) 5 and other parts. 2, QS diving fountain pump motor structure The lower part of the submersible pump is a water-filled vertical cage type asynchronous motor. The overall structure is similar to that of the conventional vertical cage type submersible motor, including stator, rotor, upper cover, lower end cover and rolling bearing support structure. As the motor is filled with water, its stator windings, rotors and bearings are required to work in the water. 3, QS diving fountain pump stator windings Stator windings are generally made of SQYN enamelled copper conductor Polyethylene insulated nylon sheath Water resistant winding wire or Sv type solid copper conductor PVC insulated water resistant winding wire. 4, QS submersible pump bearing structure Roller bearings are filled with grease that is less likely to be hydrolyzed, and rubber seals (or single-face mechanical seals) are sealed on both sides to prevent water from entering the seal of the rolling bearing, resulting in deterioration of the lubrication condition of the rolling bearing. 5, QS submersible pump anti-rust anti-corrosion treatment Submersible pump stator punch, stator core and rotor surface using water-resistant paint for anti-rust anti-corrosion treatment. The surface of metal parts is treated with anti-rust coating or electroplated to prevent corrosion of water to metal. 6, QS submersible pump structure characteristics The water-filled submersible pump supported by rolling bearing is simple in structure. The stator winding insulated wire itself has excellent water-resistant insulation characteristics. The shaft end seal mainly protects the sand particles from entering the submerged motor cavity, Lower, but the winding insulation wire requirements are higher; at the same time on the parts and rotor surface anti-rust anti-corrosion treatment requirements are higher; rolling bearings in the environment surrounded by water life directly affect the rolling bearing bearing water Submersible pump use reliability and service life. Two QS submersible pump water lubricated bearing bearing structure 1, QS submersible pump basic structure The structure of a submersible submersible pump supported by a water lubricated bearing. The structure of the submersible pump is basically the same as that of a water-filled submersible pump supported by a rolling bearing. The overall structure of the submersible motor part is similar to that of a water-filled submersible pump which is supported by a rolling bearing. 2, QS submersible pump bearing structure The upper and lower parts of the submersible motor are equipped with water lubricated sliding bearing made of polymer plastic, graphite or copper alloy. The lower part of the lower part of the submersible motor is equipped with thermosetting plastic DAP-2, P23 or stone climbing. Bearing, to withstand the submersible motor running when the rotor from the vertical and axial thrust pump. As a result of the use of water lubricated bearings, rolling bearings than the more suitable for direct work in the water.

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The difference between the axial flow pump and centrifugal pump?

Centrifugal pumps and axial pumps vary widely: 1. Flow (water) after the impeller after the outflow direction is different: Centrifugal pump: in the role of centrifugal force for radial flow. B. Axial flow pump keeps axial flow (parallel to impeller rotation center). 2, different than the number of revolutions: Centrifugal pump than the number of revolutions below 300, axial pump than the number of revolutions greater than 500. 3, the working principle is different: A. Centrifugal pump using the centrifugal force generated by the rotation of the impeller. B. Axial pump The use of impeller rotation on the water generated by the thrust (lift) work, is a large flow of low-lift pump. 4, the pump performance curve is different: A. Centrifugal pump, in use, to use the valve to start, then the power is relatively small, the motor is not easy to burn. B. Axial flow pump, in use, should not use the valve to start, but should start the valve, then the power is relatively small, the motor is not easy to burn. 5, the pump structure is different, centrifugal pumps generally have volute.

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Causal Analysis of Cavitation of Axial Flow Pump

The reason for the cavitation of the axial flow pump is due to the pressure at the inlet of the impeller or the pressure at the local position of the pump to below the vaporization pressure of the water. Therefore, in order to make the pump running without cavitation, then the installation height must meet the requirements of the sample, but can not completely avoid the occurrence of cavitation, then what is the reason for it? For axial flow pumps, the pressure at the inlet of the impeller is usually less than the atmospheric pressure on the surface of the inlet. When the axial flow pump is running, if the water level of the inlet basin is too large, the vacuum degree will be increased. When the vacuum degree is above the allowable vacuum, the cavitation will occur. Of the suction runner is not ideal, then enter the impeller flow velocity and pressure distribution will be uneven, resulting in local low pressure area. When the pressure in the low pressure zone is lower than the vaporization pressure of the water, local cavitation occurs. When the water flow passes through the narrowing gap, the water velocity increases and the pressure decreases. When the working conditions deviate from the design point too far, the possibility of cavitation is larger than that in the design case. At this time, the axial water pump may be cavitation; the axial flow pump blades are not accurate, May occur cavitation; due to the axial flow of water pump is not good, such as in the pool to produce a large number of vortex, when the whirlpool with gas into the impeller of the axial flow pump, it will produce cavitation, and axial flow pump The operating efficiency is reduced, resulting in vibration.

Submersible water pumps for Sale from manufacturers in china Email：fay@welpump.com

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Two types of guide vane mixed flow pump

There are many types of mixed flow pump, each type of pump and many types, so the pump product is extremely extensive, guide vane mixed flow pump is one of the pump, in many industries have a very wide range of applications. Under normal circumstances, from the structure, the guide vane mixed flow pump can be divided into horizontal guide vane mixed flow pump and vertical guide vane mixed flow pump two, and, from the structural point of view, its structure with the axial flow pump Like.       First talk about the horizontal guide vane mixed flow pump. Horizontal guide vane mixed flow pump is also a wide range of applications in the irrigation and drainage fields, sewers, tide drainage and so on have a very good application, its flow is very large, head for 2-8 meters, in performance, Axial flow pump is similar, but the horizontal guide vane mixed flow pump wide range of high efficiency in the full range of performance within the shaft power is roughly equal to the point of closure can also be running, the installation area than the centrifugal pump, Type pump, but at the installation height, it is smaller than the vertical pump. In addition, because of its main part of the water above, therefore, reduce the corrosion damage, but also for the inspection and maintenance provides a convenient place. The following is to talk about another type of guide vane mixed flow pump - vertical guide vane mixed flow pump. Vertical guide vane mixed flow pump is also widely used, it is widely used in agricultural resistance irrigation and drainage, power plant circulating water pumps, water, sewers and docks and other operations, the role is also a huge, Of the head is relatively high, and more for 3-20 meters, in the case of multi-level, the lift will be increased according to the series, its performance, and horizontal guide vane mixed pump is roughly the same.       Vertical guide vane mixed flow pump impeller is buried in the water, before the start without the need to add irrigation and pumping water, so the automatic operation is very easy to achieve, the general large-capacity pumps will be used vertical, this main Is due to its large value of the trophic margin desirable. Its installation area is smaller than the horizontal pump, but it is more difficult to repair.

buy best submersible water pumps from manufacturer,-shanghai weihu pump email:fay@welpump.com

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Safe use of stainless steel deep well Multi-stage submersible pumps

Many people for the stainless steel deep well multi-stage submersible pump is not very familiar with, so the first time when the use will be very worried about the safety of the problem, for fear of equipment in the use of time will suddenly appear security issues. Then we in the process of using the equipment in the end how to ensure the safety of the use of equipment? In the use of stainless steel deep well multi-stage submersible pump when the first need to focus on one of the basic points is that the power supply equipment must be grounded reliable, or security problems are inevitable. This is a common sense about the use of the equipment we should be concerned about. Followed by the use of submersible pumps must pay attention to the correct use of the way, the use of wrong, then the equipment failure is a common thing, the most frightening is that security is not guaranteed that big thing. So the use of equipment in the process of the correct use of the way is very important. Many people are not very familiar with the stainless steel submersible pump, so the first time when the use will be very worried about the safety of the problem, for fear of equipment in the use of the time there will be a sudden security problems. Then we in the process of using the equipment in the end how to ensure the safety of the use of equipment? In the use of stainless steel deep-well multi-stage submersible pump when the first need to focus on one of the basic points is that the power supply equipment must be grounded reliable, or security problems are inevitable. This is a common sense about the use of the equipment we should be concerned about. Followed by the use of stainless steel deep-well multi-stage submersible pump must pay attention to the correct use of the way, the use of wrong, then the equipment failure is a common thing, the most frightening is that security is not guaranteed that big thing. So the use of equipment in the process of the correct use of the way is very important.

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Prospect Analysis of Market Application of Stainless Steel Deep Well Submersible Pump

With the continuous development of the country, the continuous improvement of national income. Made of stainless steel products because of its long life, not rust, clean, green and other excellent features have been slowly into the industrial applications, 304 stainless steel deep well submersible pump is one of the best. These years is more into the tens of thousands of families, tables, bath and other places can be seen everywhere stainless steel figure. With the sharp increase in the market, stainless steel deep well submersible pumps are facing new technological innovations. Each enterprise is also competing to launch their own killer, and constantly upgrade their research and development team, but also out of the country, to the world's advanced countries to learn their technology, and related core production technology, in order to improve the business in the market Competitiveness. Development status: Stainless steel deep well submersible pump included in the stainless steel submersible sewage pump in the past few years in the market above the application is extremely wide, because of its corrosion resistance, long life, light weight, safety and health by the majority of users love. And the cost compared to ordinary sewage pump, because its brown metal prices continue to grow over the years, the price has been almost the same above. And after the use of stainless steel materials are green materials, can achieve 100% and then recycling, so in recent years has become a stainless steel high temperature resistant corrosion submersible pump leader. Especially in recent years for the food industry countries put forward higher requirements, stainless steel materials because of safety and health, and gradually embarked on the stage of history, for the hard requirements, stainless steel submersible pump as the representative of the stainless steel pump products began to shine in food products. From the current point of view: China's current consumption of stainless steel 3.4kg per capita, is already the forefront of the amount of developing countries, and even reached the amount of developed countries, and still at an annual rate of 6.43% increase. Because of their own materials, heat, wear, corrosion and other excellent new energy, has also embarked on petrochemical, mining, electricity and other large-scale industry stage. This has brought new vitality and opportunity to the manufacture of stainless steel submersible sewage pump, but also brought some challenges, the current manufacturing of technical barriers, but also to the industry with a more professional attitude, more scientific spirit to answer The In summary: the stainless steel deep well submersible pump as the representative of the pump products are leading the entire pump industry forward, and driven by the raw material market, the new stainless steel materials continue to come out. The patent technology, the continuous improvement of norms, are constantly driving the entire industry chain toward a higher, more orderly goal ahead, but also look forward to the stainless steel sewage pump led the pump products out of the country, in the world more The big stage plays pride in Chinese making.

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Operation rules for deep well submersible pumps

Deep well submersible pump operating procedures are as follows: ① The operator must master the general part of the operating procedures. ② open pump operation: Submersible pump should be opened before the start of the release valve, and then closed, the outlet valve should not be closed when the start, a little open some, to be opened immediately after the start to control to the appropriate location, submersible well water pump running smoothly Pressure gauge valve; submersible pump operation, observe the ammeter and voltmeter instructions whether there is a significant change in the operation of whether the noise, the normal operating current should not be greater than the motor nameplate on the specified rating; pump should be within the specified flow range , The pump flow must not be too large, too large or too small should be appropriate to adjust the opening of the outlet valve; one of the following circumstances should immediately stop running, the pump working state has not changed, the voltage rating and current exceeds the rated value, The pump intermittent water, the water pipe has a significant vibration, issued a bang of the noise, the protection switch frequently tripped. ③ stop the pump, stop the sub-submersible pump operation, close the outlet valve and pressure gauge valve; pump stop, in order to reduce the water back, should cut off the circuit, turn off the valve; if restart, after 5min or longer Time to proceed.

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Deep well pump assembly requirements

If the well is slightly deflected, the pump seat should be deflected accordingly (do not simply correct the level of the pump seat); the gap between the pump seat and the foundation should be Wedge fill.

Second, the long axis of deep well pump should still meet the following requirements: 1. When the drive shaft is connected to each other, the two shaft end faces should be fit, the depth of the two shafts into the coupling should be equal; The motor and the pump seat should be tightly fitted, during which no pad, such as the motor shaft and the motor hollow shaft is different from the axis of the pump and the base should be adjusted between the oblique horn.

Third, the diving deep well pump should meet the following requirements: 1. Pump and motor assembly, the motor should be filled with water to the submersible motor filled with clean water; 2. The depth of the unit into the water generally should not exceed 70 meters, Meter, the motor stator windings, cables and joints should be resistant to water pressure test.

Four assembly pump, water pipe, drive shaft, the connector should be tightened after the solid into the well, to prevent the mechanical parts and tools into the well, submersible pump cable should be tied in the water pipe;

5, threaded connection of the water pipe connected to each other, should be added to the oil, should not fill the linen, lead oil; pipe face should be fitted with the bearing bracket (long axis deep well pump) or directly fit, The depth of the pipe should be equal; flange connected to the water pipe, flange should be added between the end of the gasket;

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Submersible pump use safety regulations?

Submersible pump use safety regulations? 1, submersible pumps should first be installed in a solid basket and then into the water, but also in the water around the pump set up a strong protective fence. Pump should be standing in the water, the water depth of not less than 0.5m, should not be used in a large amount of mud in the water. 2, submersible water pump into the water or put forward the water, you should first cut off the power, it is strictly prohibited to pull the cable or outlet pipe. 3, submersible pump should be installed to protect the zero and leakage protection device, work around the pump within 30m of water, no one, livestock into. 4, should be checked and confirmed before starting: (1) water pipe tied firmly; (2) deflation, water, oil and other plugs are tightened; (3) impeller and water festival without debris; (4) electrical insulation is good. 5, connected to the power, you should try to run, check and confirm the correct direction of rotation, no water running time shall not exceed the provisions of the operating instructions. 6, should always observe the water level changes, impeller center to the horizontal distance should be between 0.5 ~ 3.0m, the pump body shall not fall into the sludge or exposed to the surface. The cable must not be worn with the wall, wall. 7, the starting voltage should be consistent with the provisions of the instructions, the current exceeds the limits specified in the nameplate, should stop the inspection, and not frequent switching machine. 8, submersible pump when not in use, shall not be long submerged in water, should be placed in a dry ventilated room. 9, the motor stator winding insulation resistance shall not be less than 0.5MΩ.

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Submersible pump purchase and use skills

Submersible pump small and lightweight, in rural production and life plays an important role in the purchase and use should pay attention to the following:

First, the submersible pump purchase

Purchase submersible pumps should pay attention to its model, flow and head. If the selected specifications are not appropriate, will not be able to get enough water, can not play the efficiency of the unit. In addition, should also find out the direction of rotation of the motor, some types of submersible pump forward and reverse can be when the water, but reverse the amount of water, the current is large, the reverse will damage the motor windings. In order to prevent submersible pump work in the water leakage caused by electric shock accident, should be installed leakage protection switch.

Second, submersible pump installation

When installing the submersible pump, the cable should be overhead and the power cord should not be too long. Do not allow the cable to force the unit when it enters the water, so as not to cause the power cord to break. Do not sink submerged into the mud, otherwise it will lead to poor heat dissipation and burn the motor windings.

Third, the use of submersible pumps

1. Try to avoid starting at low voltage. The power supply voltage and the rated voltage can not be a difference of 10%, the voltage is too high will cause the motor overheating and burn the winding, the voltage is too low, the motor speed decreases, such as up to 70% of rated speed, start the centrifugal switch will be closed, resulting in start winding Prolonged power and heat and even burn the windings and capacitors. Rotor pump do not frequently switch the motor, this is because the pump will stop when the return flow, if the boot immediately, will start the motor load, resulting in starting current is too large and burn the winding.

2. Do not let the pump long-term overload operation, do not smoke a large amount of water, pump dehydration run time should not be too long, so as not to overheat the motor and burned. In the operation, the operator must observe whether the operating voltage and current are within the values specified on the nameplate at any time. If the motor is not in compliance, the motor should be stopped to find out the cause and eliminate the fault.

3. Usually check the motor, such as found under the cover with cracks, rubber seal ring damage or failure, etc., should be promptly replaced or repaired to water penetration into the machine.

If you are interested in our products, consult the price of submersible pump, please contact us.

Email:fay@welpump.com Website:http://www.chinasubmersiblepump.com

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Introduction of Vertical Multistage Centrifugal Pump

Vertical multi-stage centrifugal pump of the excellent features introduced: 1, vertical multi-stage centrifugal pump with excellent hydraulic model and advanced manufacturing process, greatly improve the pump performance and service life. 2, because the shaft seal material for the carbide and fluorine rubber mechanical seal, can improve the reliability of pump operation and transmission medium temperature. 3, vertical multi-stage centrifugal pumps part of the flow through the use of stainless steel stamping welded together, making the pump can be applied to mild corrosive media. Introduction of Fine Features of Vertical Multistage Centrifugal Pump 4, vertical multi-stage centrifugal pump overall compact, small size, light weight, low noise, energy-saving effect is significant, easy maintenance. 5, the pump inlet and outlet located in the pump on the same level, can be directly used in the pipeline. 6, vertical multi-stage centrifugal pump using standard motor, the user can easily equipped with the necessary motor. 7, vertical multi-stage centrifugal pump can be equipped with intelligent protection according to user needs, the pump dry, missing, overload and other effective protection.