-
Product
-
-
Service Policy
-
-
Blog
-
Join Us
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
GS-type high-efficiency, energy-saving single-stage double-suction split-case pump
Flow rate: 50–11,160 m³/h
Head: 10–220 m
Power: 22–2240 kW
Efficiency: 61%-91%
Pump weight: 110–25,600 kg
Cavitation margin: 2.1–13.7 m
Price: 1.58–565,000
The GS-type high-efficiency, energy-saving double-suction split-case pump is a horizontal, single-stage, double-suction, horizontally split-centrifugal pump. Developed by Zhonglian Pump Industry—a manufacturer of double-suction split-case pumps—this new-generation, high-efficiency, energy-saving double-suction centrifugal pump represents an evolution and innovation based on the traditional S, SH, and SA series. It boasts a wide performance range, excellent hydraulic performance, a novel structural design, and versatile applicability.
Hotline:
Middle-open pump
Horizontal Single-Stage Fire Pump
Product Overview
GS-type single-stage double-suction Middle-open pump The horizontal single-stage double-suction, mid-open centrifugal pump is a new-generation, highly efficient and energy-saving double-suction mid-open pump developed by Zhonglian Pump Industry—China’s leading manufacturer of double-suction mid-open pumps—based on the company’s traditional S, SH, and SA series. This pump boasts a wide performance range, excellent hydraulic efficiency, a novel structural design, and versatile applicability. The GS single-stage double-suction mid-open centrifugal pump is particularly well-suited for applications involving liquid transportation in municipal water supply plants, chilled-water circulation systems for air conditioning, heating network systems, building water supply, irrigation, drainage pumping stations, steel and power plants, industrial water supply systems, fire protection systems, shipbuilding industry, and mining water supply and drainage operations.
Meaning of the Model Designation for GS High-Efficiency, Energy-Saving, Single-Stage, Double-Suction, Axially Split Centrifugal Pump
Example: GS150-360A
GS: Efficient Middle-open pump
150: Pump outlet diameter (mm)
360: Standard impeller diameter (mm)
A: Change in the outer diameter of the pump impeller (not indicated at maximum diameter)
Main Features of the GS High-Efficiency, Energy-Saving Single-Stage Double-Suction Split-Casing Centrifugal Pump
1. The single-stage, double-suction, mid-split pump features a mid-split pump casing design that allows for easy disassembly and straightforward inspection. When parts need to be replaced, the alignment of the pump body and the inlet and outlet pipelines remains unaffected.
2. The double-suction design boasts excellent suction performance, ensuring a high suction lift even under high-flow operation.
3. It features a wide efficient operating range, and the pump can operate at both 50 Hz and 60 Hz frequencies.
4. Low noise and stable operation with excellent performance ensure a quiet environment.
5. The combination of various materials meets a wide range of application conditions.
6. The drive shaft end can be on the left or right side of the pump.
7. The pump shaft seal can be either an uncooled packing seal or an uncooled single-face, non-balanced seal type.
Technical Advantages of the GS High-Efficiency, Energy-Saving Single-Stage Double-Suction Split-Casing Pump
Advantage 1: High Efficiency
The GS high-efficiency, energy-saving single-stage double-suction split-case pump adopts a staggered arrangement of two half-impeller blades, thereby altering the blade passing frequency (the frequency at which the blades pass through the pump casing tongue). This reduces fluid flow pulsation—by approximately 1‰ to 4‰ of the head—and results in smoother fluid flow, higher efficiency, reduced vibration, and more stable and reliable operation.
Advantage 2: Low Ripple
The GS high-efficiency, energy-saving single-stage double-suction split-case pump adopts advanced hydraulic models from both domestic and international sources and utilizes CFD computational fluid dynamics analysis methods for targeted optimization and improvement. Its performance indicators comprehensively surpass industry standards, reaching internationally advanced levels, with the highest efficiency exceeding 92%.
Advantage 3: Low Cavitation Margin
The inlet edge shape of the impeller blades in the GS high-efficiency, energy-saving double-suction centrifugal pump adopts an optimized convex arc design, which increases the flow area at the liquid inlet and reduces the inlet flow velocity. This results in higher pressure at the inlet edge, thereby improving the net positive suction head available (NPSH) and reducing cavitation risk.
The blade tip adopts an airfoil streamline design, which reduces flow impact losses and minimizes vortex formation. This not only enhances the peak efficiency but also broadens the high-efficiency range, ensures a more uniform pressure distribution, and improves cavitation performance.
Advantage Four: High Reliability
The high-head, high-efficiency, and energy-saving split-case pump features a dual-volute design. Both the pump casing and pump cover are equipped with reinforcing ribs, and their structure has been optimized using ANSYS finite element analysis software. The pump casing boasts exceptional strength, and its hydrostatic pressure test is conducted strictly in accordance with the hydrostatic pressure test standards specified in GB/T 5656, "Technical Specifications for Centrifugal Pumps—Class II."
The short bearing span and the thickened shaft design minimize rotor deflection during operation, ensuring stability and reliability.
All impellers undergo a static balance test at Grade 6.3, and the entire rotor is subjected to a dynamic balance test at Grade 2.5 according to API610 standards.
The spindle features a fully sealed design that keeps the shaft completely isolated from contact with liquids. The bearing components are equipped with a combined sealing structure consisting of a lip-type oil seal and a V-shaped sealing ring, providing excellent performance in preventing oil leakage, dust ingress, water penetration, and moisture accumulation.
Advantage Five: Strong Adaptability
The high-efficiency, energy-saving single-stage double-suction split-case pump features a wide efficient operating range, enabling it to meet user requirements over a broader spectrum. Additionally, our design incorporates a dual-impeller configuration for each pump, providing exceptional flexibility and ensuring that the majority of user operating conditions can be optimized within the pump’s high-efficiency zone.
The pump’s inlet and outlet flanges can be manufactured according to standards such as GB, ISO, DIN, BS, and ANSI.
Pump casing flow passages: Available options include ultra-smooth energy-saving coatings and wear- and corrosion-resistant coatings.
For conveying high-temperature media, the GS-R type structure can be used, with the pump featuring a center-supported design and a water-cooled bearing housing.
Shaft seal system: It allows for interchangeability between packing seals and single-face mechanical seals. Additionally, it can be configured according to user requirements with cartridge-type mechanical seals, double-face mechanical seals, and flushing systems compliant with AP682 standards.
Bearing lubrication system: Grease lubrication or thin oil lubrication can be used, offering flexible options.
Bearing cooling system: The bearing housing can be cooled naturally or by water, depending on the temperature of the medium.
Remote Monitoring: The bearing housing is equipped with monitoring interfaces for temperature and vibration measurement, enabling convenient remote monitoring.
Advantage Six: High Versatility
With the exception of a few components such as the pump body, pump cover, and impeller, the rest of the parts adopt a modular design, achieving standardization of components. Bearing assemblies, sealing components, shaft sleeves, and retaining sleeves—all part of the same shaft system—can be interchanged, facilitating mass production of the pump.
Design Features of the GS-Type High-Efficiency and Energy-Saving Single-Stage Double-Suction Split-Casing Pump
Product Parameters
Performance Parameters of GS-Type High-Efficiency and Energy-Saving Single-Stage Double-Suction Split-Casing Centrifugal Pump
| Model | Flow rate Q | Head H | Rotational speed n | Shaft power Pa | Motor power | Efficiency |
| m³/h | m | r/min | kilowatt | kilowatt | % | |
| GS150-240/2 | 112 | 86 | 2970 | 33.6 | 55 | 78 |
| 160 | 78 | 42 | 81 | |||
| 192 | 72 | 47.1 | 80 | |||
| GS150-240M/2 | 95 | 77 | 2970 | 25.7 | 45 | 77 |
| 135 | 70 | 32.2 | 80 | |||
| 162 | 64 | 35.8 | 79 | |||
| GS150-310/2 | 112 | 140 | 2970 | 60.2 | 110 | 71 |
| 160 | 130 | 73.6 | 77 | |||
| 192 | 124 | 85.3 | 76 | |||
| GS150-310M/2 | 95 | 124 | 2970 | 45.6 | 75 | 70 |
| 135 | 116 | 56.1 | 76 | |||
| 162 | 107 | 63 | 75 | |||
| GS200-140/2 | 200 | 18 | 2970 | 12.9 | 22 | 76 |
| 285 | 16 | 15.3 | 81 | |||
| 342 | 13 | 15.9 | 76 | |||
| GS200-140M/2 | 168 | 16 | 2970 | 10.5 | 18.5 | 70 |
| 245 | 14 | 12.5 | 75 | |||
| 288 | 13 | 14.6 | 70 | |||
| GS200-160/2 | 200 | 28 | 2970 | 19 | 30 | 80 |
| 285 | 25 | 22.8 | 85 | |||
| 342 | 20 | 23.6 | 79 | |||
| GS200-160M/2 | 172 | 26 | 2970 | 15.4 | 22 | 79 |
| 245 | 23 | 18.3 | 84 | |||
| 294 | 18 | 18.5 | 78 | |||
| GS200-200/2 | 200 | 47 | 2970 | 31.9 | 45 | 80 |
| 285 | 42 | 37.9 | 86 | |||
| 342 | 36 | 40.4 | 83 | |||
| GS200-200M/2 | 172 | 43 | 2970 | 25.4 | 37 | 79 |
| 245 | 38 | 29.8 | 85 | |||
| 294 | 32 | 31.3 | 82 | |||
| GS200-240/2 | 200 | 77 | 2970 | 54.3 | 90 | 77 |
| 285 | 72 | 66.5 | 84 | |||
| 342 | 65 | 73 | 83 | |||
| GS200-240M/2 | 172 | 69 | 2970 | 42.4 | 75 | 76 |
| 245 | 65 | 52.3 | 83 | |||
| 294 | 58 | 56.6 | 82 | |||
| GS200-280/2 | 200 | 123 | 2970 | 89.1 | 132 | 75 |
| 285 | 112 | 107.4 | 81 | |||
| 342 | 103 | 126.3 | 76 | |||
| GS200-280M/2 | 172 | 112 | 2970 | 70.7 | 110 | 74 |
| 245 | 101 | 84.3 | 80 | |||
| 294 | 94 | 100.4 | 75 | |||
| GS200-280/4 | 98 | 32 | 1480 | 11.4 | 18.5 | 75 |
| 140 | 28 | 13.2 | 81 | |||
| 170 | 25 | 15.2 | 76 | |||
| GS200-280M/4 | 84 | 28 | 1480 | 8.7 | 15 | 74 |
| 120 | 25 | 10.2 | 80 | |||
| 144 | 23 | 12 | 75 | |||
| GS200-370/2 | 200 | 202 | 2970 | 152.5 | 250 | 72 |
| 285 | 190 | 191.6 | 77 | |||
| 370 | 175 | 235.2 | 75 | |||
| GS200-370M/2 | 172 | 183 | 2970 | 120.4 | 200 | 71 |
| 245 | 171 | 150.2 | 76 | |||
| 294 | 165 | 178.6 | 74 | |||
| GS200-370/4 | 98 | 51 | 1480 | 18.9 | 37 | 72 |
| 140 | 48 | 23.8 | 77 | |||
| 186 | 42 | 28.4 | 75 | |||
| GS200-370M/4 | 84 | 46 | 1480 | 14.8 | 22 | 71 |
| 120 | 43 | 18.5 | 76 | |||
| 144 | 41 | 21.7 | 74 | |||
| GS250-250/4 | 343 | 16 | 1480 | 18.7 | 30 | 80 |
| 490 | 14 | 21.7 | 86 | |||
| 588 | 12 | 23.4 | 82 | |||
| GS250-250M/4 | 291 | 14 | 1480 | 14 | 22 | 79 |
| 415 | 13 | 17.3 | 85 | |||
| 498 | 10 | 16.7 | 81 | |||
| GS250-300/4 | 343 | 27 | 1480 | 31.1 | 45 | 81 |
| 490 | 24 | 36.8 | 87 | |||
| 588 | 20 | 37.7 | 85 | |||
| GS250-300M/4 | 291 | 24 | 1480 | 23.7 | 37 | 80 |
| 415 | 22 | 28.9 | 86 | |||
| 498 | 19 | 30.7 | 84 | |||
| GS250-300N/4 | 378 | 28 | 1480 | 36 | 55 | 80 |
| 540 | 25 | 42.8 | 86 | |||
| 621 | 21 | 42.8 | 83 | |||
| GS250-360/2 | 343 | 185 | 2970 | 218.8 | 355 | 79 |
| 490 | 170 | 273.4 | 83 | |||
| 588 | 157 | 306.7 | 82 | |||
| GS250-360M/2 | 291 | 165 | 2970 | 167.4 | 250 | 78 |
| 415 | 151 | 208.2 | 82 | |||
| 498 | 140 | 234.5 | 81 | |||
| GS250-360N/2 | 378 | 190 | 2970 | 247.7 | 355 | 79 |
| 540 | 175 | 310.2 | 83 | |||
| 621 | 160 | 338.3 | 80 | |||
| GS250-350/4 | 343 | 42 | 1480 | 49.1 | 75 | 80 |
| 490 | 39 | 60.5 | 86 | |||
| 588 | 36 | 68.6 | 84 | |||
| GS250-350M/4 | 291 | 38 | 1480 | 38.1 | 55 | 79 |
| 415 | 35 | 46.6 | 85 | |||
| 498 | 31 | 50.1 | 84 | |||
| GS250-350N/4 | 378 | 43 | 1480 | 55.3 | 90 | 80 |
| 540 | 40 | 68.4 | 86 | |||
| 621 | 37 | 74.5 | 84 | |||
| GS250-450/4 | 343 | 71 | 1480 | 82.9 | 132 | 80 |
| 490 | 65 | 103.3 | 84 | |||
| 588 | 60 | 117.2 | 82 | |||
| GS250-450M/4 | 291 | 64 | 1480 | 64.1 | 110 | 79 |
| 415 | 58 | 79 | 83 | |||
| 498 | 53 | 88.8 | 81 | |||
| GS250-450N/4 | 378 | 73 | 1480 | 94 | 160 | 80 |
| 540 | 68 | 120.5 | 83 | |||
| 621 | 63 | 133.2 | 80 | |||
| GS250-500/4 | 215 | 99 | 1480 | 81.7 | 160 | 71 |
| 360 | 90 | 117.7 | 75 | |||
| 430 | 81 | 130 | 73 | |||
| GS250-550/4 | 343 | 115 | 1480 | 145.2 | 220 | 74 |
| 490 | 108 | 182.5 | 79 | |||
| 588 | 99 | 203.3 | 78 | |||
| GS250-550M/4 | 291 | 106 | 1480 | 114.9 | 200 | 73 |
| 415 | 100 | 144.9 | 78 | |||
| 498 | 92 | 162.1 | 77 | |||
| GS250-550N/4 | 378 | 118 | 1480 | 164.2 | 250 | 74 |
| 540 | 110 | 210.2 | 77 | |||
| 621 | 102 | 230.1 | 75 | |||
| GS300-250/4 | 560 | 15 | 1480 | 28.6 | 37 | 80 |
| 800 | 12 | 30.4 | 86 | |||
| 960 | 10 | 31.5 | 83 | |||
| GS300-250M/4 | 476 | 14 | 1480 | 23 | 30 | 79 |
| 680 | 11 | 24 | 85 | |||
| 816 | 9 | 24.4 | 82 | |||
| GS300-250N/4 | 630 | 16 | 1480 | 34.3 | 45 | 80 |
| 900 | 13 | 37.5 | 85 | |||
| 1035 | 11 | 37.8 | 82 | |||
| GS300-300/4 | 560 | 22 | 1480 | 40.9 | 55 | 82 |
| 800 | 19 | 47.1 | 88 | |||
| 960 | 16 | 49.2 | 85 | |||
| GS300-300M/4 | 476 | 20 | 1480 | 32 | 45 |
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.
Product message
Contact our team promptly; we are happy to help you.
*Note: Please fill in the information accurately and keep the communication open. We will contact you as soon as possible.
Hotline:
+86 0731-88632200
Export Trade/Technical Support:
+86 153-4831-2290
Head Office Email:
zoomlian@yeah.net
No. 210, Huanbao Zhong Road, Yuhua District, Changsha City, Hunan Province, Leowoju Wisdom Valley Building B, 8th Floor
Quick Navigation
Hot Products
Online Consultation
Powered by:www.300.cn Changsha SEO