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Having 26 series -312 varieties - over 1000 pump models
Focused on water pump research and development manufacturing for 36 years
Free training for operation and maintenance personnel/free installation guidance/free provision of installation drawings
QJ-type multistage submersible pump for deep wells
Traffic: 2–500 m³/h
Head: 19-600m
Power: 3-90kw
Pipe diameter: 40-200mm
Rated current: 7.9-182.8A
Price: 0.19–4.15 ten thousand
The QJ-type high-head multistage submersible pump for deep wells is a water-lifting device in which the motor and pump are directly coupled and operate submerged in water. It is suitable for drawing groundwater from deep wells and can also be used in water-lifting projects involving rivers, reservoirs, canals, and other water sources. Multistage submersible pumps are primarily used for agricultural irrigation and providing drinking and domestic water to humans and livestock in plateau and mountainous regions. They can also supply and discharge water for urban areas, factories, railways, mines, and construction sites.
Hotline:
Submersible pump
Horizontal Single-Stage Fire Pump
Product Parameters
Meaning of the Model Designation for QJ-Type High-Head Multistage Submersible Pumps for Deep Wells
For example: 175QJ10-150/21-7.5
175 - Base Number: 175 (Minimum Wellbore Diameter)
QJ—Model Feature: Submersible Well Pump
10 - Flow rate: 10 m³/h
150 - Head: 150 m
21st series: 21st level
7.5 - Matching power: 7.5 kW
Operating Conditions and Product Features of QJ-Type High-Head Multistage Submersible Pumps for Deep Wells
Terms of Use:
1. The power supply is a three-phase AC power source with 50 Hz and 380 V.
2. The water temperature must not exceed 20℃.
3. The content of solid substances in water (by mass) shall not exceed 0.01%.
4. The pH of water ranges from 6.5 to 8.5.
5. The chloride ion content in the water shall not exceed 400 mg/L.
Product features:
1. For well use Submersible pump The motor and pump are integrated into one unit, designed to operate submerged in water—safe and reliable.
2. The QJ multistage submersible pump has no special requirements for well casings or lift pipes (i.e., it can be used with steel-cased wells, cemented-pipe wells, earth wells, etc.; under permissible pressure conditions, steel pipes, rubber hoses, plastic pipes, and other materials can all serve as lift pipes).
3. The multi-stage submersible pump is easy and simple to install, use, and maintain; it occupies a small footprint and does not require the construction of a pump room.
4. The submersible well pump has a simple structure and saves raw materials.
Whether the conditions for using submersible deep-well pumps are appropriate and whether they are properly managed are directly related to their service life.
Installation of QJ-type high-head multistage submersible pump units for deep wells
1. Installation Notes
(1) The pump’s inlet must be located at least 1 meter below the dynamic water level; however, the submergence depth must not exceed 70 meters below the static water level, and the bottom end of the motor must be at least 1 meter above the well bottom.
(2) Motors with a rated power of 15 kW or less (25 kW if permitted by the power supply) shall be started at full voltage.
(3) For motors with a rated power greater than 15 kW, a reduced-voltage starting method shall be used.
(4) The operating environment must meet the specified conditions.
2. Preparations Before Installation
(1) First, check whether the diameter of the well, the static water depth, and the power supply system meet the operational requirements.
(2) Check whether the electric pump rotates smoothly and without any jamming. For separately assembled motors and electric pumps, use a coupling to connect them, and be sure to tighten the set screws securely.
(3) Open the vent and water-inlet plugs, fill the motor cavity completely with clean water, taking care to avoid overfilling. Tighten the plugs securely. There should be no leakage.
(4) Use a 500-volt megohmmeter to measure the motor insulation; the reading should be no less than 150 megohms.
(5) Corresponding lifting tools, such as tripods and slings, should be provided.
(6) Install the protective switch and starting device, then briefly start the motor (for no more than 1 second) to check whether the motor’s rotation direction matches the direction indicated on the label. If the directions are opposite, simply swap any two of the power supply terminals. Next, securely install the cable guard plate and the water filter screen, and prepare to lower the unit into the well. When coupling the motor to the pump, be sure to fill the pump’s outlet with clean water first; only start the motor once water begins flowing out from the inlet connection.
3. Installation
(1) First, install a pump pipe section at the pump’s outlet and secure it with a clamp. Then, lift the assembly and lower it into the well so that the clamp rests on the well platform.
(2) Next, use another pair of clamps to secure the next section of the water pipe. Then, lift the pipe and lower it into position so that its flange aligns with the gasket on the connecting pipe flange. When tightening the screws, be sure to proceed diagonally and simultaneously. Once the lifting chain is raised and the first pair of clamps is removed, allow the pump pipe to descend until the second pair of clamps rests again on the well platform. Repeat this process—installing and lowering the pipe into the well—until all sections have been installed. Finally, place the well cover on top, leaving the last pair of clamps in place without removing them; simply set them atop the well cover.
(3) Install bends, gate valves, outlets, and other components, and add corresponding rubber gaskets for sealing.
(4) The cable should be securely fixed in the groove on the flange of the water pipe. Each section must be properly tied with rope. During the process of lowering the cable into the well, handle it with care and avoid any damage to the cable.
(5) During the pump-down process, if you encounter any sticking or jamming, make every effort to overcome the obstruction. Do not force the pump down, as this could cause it to become completely stuck.
(6) It is strictly prohibited for personnel to enter the well for work during installation.
(7) The protective switch and starting device shall be installed behind the user’s distribution panel, which is equipped with a voltmeter, an ammeter, and indicator lights, and positioned appropriately within the wellhouse.
(8) Implement the forceful protective measure of “tying the wire from the motor base to the pump pipe” to prevent accidental incidents.
Performance Parameter Table for QJ Type High-Head Multistage Submersible Pump for Deep Wells
Model | Head reference usage range (m) | Motor power (KW) | Rated current (A) | Discharge pipe diameter (inches) |
150QJ10-50/7 | 40-55 | 3 | 7.9 | 2 |
150QJ10-100/14 | 80-110 | 5.5 | 13.7 | |
150QJ10-150/21 | 120-170 | 7.5 | 18.5 | |
150QJ20-24/4 | 19-29 | 3 | 7.9 | |
150QJ20-30/5 | 24-36 | 3 | 7.9 | |
150QJ20-36/6 | 29-43 | 4 | 10.26 | |
150QJ20-42/7 | 34-50 | 4 | 10.26 | |
150QJ20-48/8 | 38-58 | 5.5 | 13.74 | |
150QJ20-54/9 | 43-65 | 5.5 | 13.74 | |
150QJ20-60/10 | 48-72 | 7.5 | 18.5 | |
150QJ20-66/11 | 53-79 | 7.5 | 18.5 | |
150QJ20-72/12 | 58-76 | 7.5 | 18.5 | |
150QJ20-78/13 | 62-94 | 7.5 | 18.5 | |
150QJ20-84/14 | 67-101 | 9.2 | 22.12 | |
150QJ20-90/15 | 72-108 | 9.2 | 22.12 | |
150QJ20-96/16 | 77-115 | 9.2 | 22.12 | |
150QJ20-102/17 | 82-122 | 11 | 26.28 | |
150QJ20-108/18 | 86-130 | 11 | 26.28 | |
150QJ20-114/19 | 91-137 | 11 | 26.28 | |
150QJ20-120/20 | 96-144 | 13 | 30.87 | |
150QJ20-126/21 | 101-151 | 13 | 30.87 | |
150QJ20-132/22 | 106-158 | 13 | 30.87 | |
150QJ20-138/23 | 110-166 | 13 | 30.87 | |
150QJ20-144/24 | 115-173 | 15 | 35.62 | |
150QJ20-150/25 | 120-180 | 15 | 35.62 | |
150QJ20-156/26 | 125-187 | 15 | 35.62 | |
150QJ20-162/27 | 130-194 | 15 | 35.62 | |
200QJ20-40/3 | 35-45 | 4 | 10.1 | |
200QJ20-54/4 | 45-58 | 5.5 | 13.6 | |
200QJ20-67-5 | 58-72 | 7.5 | 18 | |
200QJ20-81/6 | 72-86 | 7.5 | 18 | |
200QJ20-93/7 | 86-98 | 9.2 | 21.7 | |
200QJ20-108/8 | 98-115 | 11 | 25.8 | |
200QJ20-121/9 | 115-128 | 13 | 29.8 | |
200QJ20-133/10 | 120-140 | 15 | 33.9 | |
200QJ20-148/11 | 140-158 | 15 | 33.9 | |
200QJ20-175/13 | 153-190 | 18.5 | 41.6 | |
200QJ20-202/15 | 199-215 | 22 | 48.2 | |
200QJ20-243/18 | 220-250 | 25 | 54.5 | |
200QJ20-270/20 | 250-282 | 30 | 65.4 | |
200QJ20-297/22 | 280-315 | 30 | 65.4 | 2.5 |
200QJ20-338/25 | 315-350 | 37 | 79.7 | |
200QJ20-350/26 | 335-370 | 37 | 79.7 | |
200QJ20-363/27 | 350-385 | 37 | 79.7 | |
200QJ20-400/30 | 375-420 | 45 | 96.9 | |
200QJ20-450/34 | 425-470 | 45 | 96.9 | |
200QJ32-26/2 | 23-30 | 4 | 10.1 | |
200QJ32-39-3 | 35-45 | 5.5 | 13.6 | |
200QJ32-52/4 | 45-55 | 7.5 | 18 | |
200QJ32-65/5 | 55-73 | 11 | 25.8 | |
200QJ32-78/6 | 70-84 | 11 | 25.8 | |
200QJ32-91/7 | 80-105 | 13 | 29.8 | |
200QJ32-104/8 | 95-110 | 15 | 33.9 | |
200QJ32-130/10 | 120-137 | 18.5 | 41.6 | |
200QJ32-156/12 | 140-162 | 25 | 54.5 | |
200QJ32-195/15 | 180-215 | 30 | 65.4 | |
200QJ32-234/18 | 224-247 | 37 | 79.7 | |
200QJ32-247/19 | 234-255 | 37 | 79.7 | |
200QJ32-260/20 | 250-275 | 45 | 96.9 | |
200QJ32-286/22 | 275-300 | 45 | 96.9 | |
200QJ40-26/2 | 23-30 | 5.5 | 13.6 | |
200QJ40-39/3 | 35-45 | 7.5 | 18 | |
200QJ40-52/4 | 45-55 | 9.3 | 21.7 | |
200QJ40-65/5 | 55-73 | 11 | 25.8 | |
200QJ40-78/6 | 70-84 | 15 | 33.9 | |
200QJ40-104-8 | 95-110 | 18.5 | 41.6 | |
200QJ40-117/9 | 105-120 | 22 | 48.2 | |
200QJ40-143/11 | 130-145 | 25 | 54.5 | |
200QJ40-169/13 | 160-175 | 30 | 65.4 | |
200QJ40-208/16 | 200-215 | 37 | 79.7 | |
200QJ50-13/1 | 13-20 | 4 | 10.1 | 3 |
200QJ50-26/2 | 23-29 | 5.5 | 13.6 | |
200QJ50-39/3 | 35-43 | 9.2 | 21.7 | |
200QJ50-52/4 | 43-58 | 11 | 25.8 | |
200QJ50-65/5 | 58-75 | 15 | 33.9 | |
200QJ50-78/6 | 70-90 | 18.5 | 41.6 | |
200QJ50-91/7 | 80-110 | 22 | 48.2 | |
200QJ50-104/8 | 90-118 | 25 | 54.5 | |
200QJ50-117/9 | 100-130 | 30 | 65.4 | |
200QJ50-130/10 | 115-148 | 30 | 65.4 | |
200QJ50-156/12 | 142-180 | 37 | 79.7 | |
200QJ50-182/14 | 165-206 | 45 | 96.9 | |
200QJ50-195/15 | 185-220 | 45 | 96.9 | |
200QJ63-12/1 | 41866 | 4 | 10.1 | |
200QJ63-24/2 | 19-30 | 7.5 | 18 | |
200QJ63-36/3 | 28-44 | 11 | 21.7 | |
200QJ63-48/4 | 38-58 | 15 | 33.9 | |
200QJ63-60/5 | 47-75 | 18.5 | 41.6 | |
200QJ63-72/6 | 56-88 | 22 | 48.2 | |
200QJ63-84/7 | 68-105 | 25 | 54.5 | |
200QJ63-96/8 | 76-118 | 30 | 65.4 | |
200QJ63-108/9 | 86-130 | 30 | 65.4 | |
200QJ63-120/10 | 95-142 | 37 | 79.9 | |
200QJ63-144/12 | 112-168 | 45 | 96.9 | |
200QJ80-11/1 | 41864 | 4 | 10.1 | 4 |
200QJ80-22/2 | 16-25 | 7.5 | 18 | |
200QJ80-33/3 | 28-42 | 11 | 25.8 | |
200QJ80-44/4 | 40-50 | 15 | 33.9 | |
200QJ80-55/5 | 50-60 | 18.5 | 41.6 | |
200QJ80-66/6 | 60-70 | 22 | 48.2 | |
200QJ80-77/7 | 70-80 | 30 | 65.4 | |
200QJ80-88/8 | 80-95 | 37 | 79.7 | |
200QJ80-99/9 | 95-110 | 37 | 79.7 | |
200QJ80-121/11 | 110-140 | 45 | 96.9 | |
250QJ32-138/6 | 124-151 | 22 | 47.9 | 2.5 |
250QJ32-161/7 | 145-176 | 25 | 53.8 | |
250QJ32-184/8 | 166-202 | 30 | 64.2 | |
250QJ32-207/9 | 186-227 | 37 | 77.8 | |
250QJ32-230/10 | 207-252 | 37 | 77.8 | |
250QJ32-253/11 | 227-277 | 45 | 94.1 | |
250QJ32-276/12 | 248-302 | 45 | 94.1 | |
250QJ32-300/13 | 270-328 | 55 | 114.3 | 3 |
250QJ32-322/14 | 290-352 | 55 | 114.3 | |
250QJ32-345/15 | 310-370 | 63 | 130.9 | |
250QJ32-368/16 | 332-395 | 63 | 130.9 | |
250QJ32-391/17 | 352-420 | 63 | 130.9 | |
250QJ32-414/18 | 373-445 | 75 | 152.3 | |
250QJ32-437/19 | 394-468 | 75 | 152.3 | |
250QJ32-460/20 | 414-495 | 75 | 152.3 | |
250QJ32-483/21 | 435-510 | 90 | 182.8 | |
250QJ32-506/22 | 455-543 | 90 | 182.8 | |
250QJ32-529/23 | 476–568 | 90 | 182.8 | |
250QJ32-552/24 | 498-588 | 90 | 182.8 | |
250QJ50-20/1 | 18-22 | 5.5 | 13.6 | |
250QJ50-40/2 | 37-45 | 9.2 | 21.7 | |
250QJ50-60/3 | 55-65 | 13 | 29.8 | |
250QJ50-80/4 | 75-85 | 18.5 | 41.6 | |
250QJ50-100/5 | 93-107 | 22 | 47.9 | |
250QJ50-120/6 | 113-127 | 25 | 53.8 | |
250QJ50-140/7 | 120-160 | 37 | 77.8 | |
250QJ50-160/8 | 151/170 | 37 | 77.8 | |
250QJ50-180/9 | 170-190 | 45 | 94.1 | |
250QJ50-200/10 | 190-210 | 45 | 94.1 | |
250QJ50-220/11 | 208-230 | 55 | 114.3 | |
250QJ50-240/12 | 220-260 | 55 | 114.3 | |
250QJ50-260/13 | 245-271 | 63 | 130.9 | |
250QJ50-280/14 | 265-291 | 63 | 130.9 | |
250QJ50-300/15 | 288-312 | 63 | 152.3 | |
250QJ50-320/16 | 308-332 | 75 | 152.3 | |
250QJ50-340/17 | 320-360 | 75 | 182.8 | |
250QJ50-360/18 | 355-380 | 90 | 182.8 | |
250QJ80-20/1 | 17-22 | 7.5 | 18 | 4 |
250QJ80-40/2 | 35/44 | 15 | 33.9 | |
250QJ80-60/3 | 52-66 | 22 | 47.9 | |
250QJ80-80/4 | 70-80 | 30 | 64.2 | |
250QJ80-100/5 | 87-110 | 37 | 77.8 | |
250QJ80-120/6 | 105-131 | 45 | 94.1 | |
250QJ80-140/7 | 122-153 | 55 | 114.3 | |
250QJ80-160/8 | 150/170 | 63 | 130.9 | |
250QJ80-180/9 | 170-197 | 63 | 130.9 | |
250QJ80-200/10 | 184-219 | 75 | 152.3 | |
250QJ80-220/11 | 210-230 | 90 | 182.8 | |
250QJ80-240/12 | 230-253 | 90 | 182.8 | |
250QJ100-18/1 | 15-22 | 7.5 | 18 | |
250QJ100-36/2 | 30-44 | 15 | 33.9 | |
250QJ100-54/3 | 44-60 | 25 | 53.8 | |
250QJ100-72/4 | 66-78 | 30 | 64.2 | |
250QJ100-108/6 | 110-116 | 45 | 94.1 | |
250QJ100-126/7 | 118-136 | 55 | 114.3 | |
250QJ100-144/8 | 136-152 | 63 | 130.9 | |
250QJ100-162/9 | 156-170 | 75 | 152.3 | |
250QJ100-198/11 | 188-208 | 90 | 182.8 | |
250QJ125-16/1 | 14-19 | 9.2 | 21.7 | 5 |
250QJ125-32/2 | 28-35 | 18.5 | 41.6 | |
250QJ125-48/3 | 42-54 | 25 | 53.8 | |
250QJ125-64/4 | 56-70 | 37 | 77.8 | |
250QJ125-80/5 | 72-90 | 45 | 94.1 | |
250QJ125-96/6 | 86-105 | 55 | 114.3 | |
250QJ125-112/7 | 102-120 | 63 | 130.9 | |
250QJ125-128/8 | 120-138 | 75 | 152.3 | |
250QJ125-144/9 | 134-156 | 90 | 182.8 | |
250QJ125-160/10 | 150-175 | 90 | 182.8 |
Friendly reminder: For more performance parameters of the QJ-type multistage submersible pump for deep wells, please click → [Pump Selection] page to inquire.
Why choose us?
Changsha Zhonghlian Pump Industry Co., Ltd. was founded in 1989 and was independently established after the restructuring of Changsha Water Pump Factory. It is a comprehensive national high-tech enterprise integrating design, research and development, manufacturing, and service. The company was listed on the Hunan Provincial Equity Exchange on December 31, 2019, with the abbreviation "Zhonghlian Pump Industry" and the equity code: 600275HN. It is currently a key backbone enterprise in China's centrifugal pump industry and one of the major professional manufacturers of multi-stage pumps in the country. The headquarters is located in Changsha City, Hunan Province, a historical and cultural city in China.
Square meters of land area
100% factory pass rate
Square meters of land area
100% factory pass rate
Q
What is your typical delivery time?
A
Models in stock can be shipped the next day at the latest. All others are custom-made, with lead times generally ranging from 7 to 90 days depending on the product size and project specifics. Please contact our sales manager for details: 0731-88632200 。
Q
Do you have centrifugal pumps in stock?
A
Centrifugal pumps come in numerous models and configurations. Except for a small number of high-volume, standard models that are in stock, the vast majority are not stocked and are customized products. We need to select a pump based on your site's flow rate, head, media temperature, pH value, and installation conditions, etc., to determine the pump model and configuration before we can submit an order to the factory for production.
Q
What information should I provide when requesting a quote?
A
Generally, to obtain an accurate quotation, we recommend providing us with the following information: pump flow rate, head, on-site operating voltage and frequency, temperature, pH value, and solid particle content of the fluid being conveyed, and on-site installation conditions (horizontal or vertical installation), etc.
If you are not sure, don't worry, our business managers will assist you in determining this.
Q
What products do you mainly produce?
A
Zhonglian Pump Industry manufactures various large industrial centrifugal pumps. Main products include: self-balancing multi-stage pumps, multi-stage centrifugal pumps, single-stage centrifugal pumps, split-case pumps, chemical pumps, submersible pumps, pipeline pumps, long-shaft pumps, condensate pumps, etc.
Q
Why is it so slow to get a price quote?
A
Because centrifugal pumps are non-standard customized products with many models, the price range is also very large. Even for the same model, the price difference is also very large due to different materials and configurations. Taking the most common water pump accessory—the impeller—as an example, the price of a stainless steel impeller is several times that of a cast iron impeller. Therefore, we need to clarify the relevant information to give you an accurate price. Normally, if you provide relatively comprehensive information, we can quote within 5 minutes.
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