Changsha Zhonglian Pump Industry Co., Ltd.

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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

Self-balancing multistage pump

Multistage pump

Coal Mine Safety Certified Multi-stage Pump

Vertical multistage pump

Integrated pump station

Vacuum pump

Fire pump

Constant-pressure water supply equipment

Other pumps

Genuine accessories

Single-stage diesel engine pump unit

Flow rate: 3.75–1080 m³/h

Head: 4–128 m

Price: 201,000–1.2 million

Power: 0.55–160 kW

Efficiency: 23%-85%

Pump weight: 40–2100 kg

Cavitation margin: 2.0–6.0 m

The IS-type horizontal single-stage single-suction clear-water centrifugal pump driven by a diesel engine is an energy-saving pump jointly designed nationwide. It represents an upgraded version of the BA-type, BL-type, and other single-stage clear-water centrifugal pumps. Its advantages include: a reasonably optimized hydraulic performance layout across the entire series, a wide range of options for users, and convenient maintenance; furthermore, its efficiency and suction lift have reached the internationally average advanced level.

Hotline:

+86 0731-88632200

classification：

Diesel engine pump

keyword：

Horizontal Single-Stage Fire Pump

Product consultation

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Product overview Product parameters Why choose us? Frequently Asked Questions

Product Overview

　　The IS horizontal single-stage single-suction clear-water centrifugal pump driven by a diesel engine is an energy-saving pump jointly designed nationwide. It represents an upgraded version of the BA, BL, and other single-stage clear-water centrifugal pumps. Its advantages include: a reasonably optimized hydraulic performance layout across the entire series, a wide range of options for users, and convenient maintenance; its efficiency and suction lift both reach internationally advanced average levels. This pump model is suitable for industrial and urban water supply and drainage applications, as well as for agricultural irrigation and drainage, and can also be used to convey clear water or other liquids with physical and chemical properties similar to those of clear water, at temperatures not exceeding 80℃.

Product Parameters

Single-stage diesel engine pump unit – IS-type horizontal clear water pump model designation:

Single-stage diesel engine pump unit – IS-type single-stage centrifugal pump: Structural features:

　　1 Pump body, 2 Pump cover, 3 Impeller, 4 Shaft, 5 Seal ring, 6 Impeller nut, 7 Locking washer, 8 Shaft sleeve, 9 Stuffing box gland, 10 Stuffing ring, 11 Packing, 12 Suspension bearing assembly.

　　The IS-type single-stage diesel pump is designed according to the performance and dimensions specified in the national standard ISO 2858. It mainly consists of components such as the pump body (1), pump cover (2), impeller (3), shaft (4), sealing ring (5), shaft sleeve, and suspended bearing assembly (12). The IS-type horizontal single-stage single-suction clear water centrifugal pump features a back-opening design; when disassembling the pump cover and impeller, there is no need to remove the suction or discharge pipelines. The suspension housing is fitted with two ball bearings, which are lubricated by machine oil or grease. The pump is directly driven by an electric motor via an elastic coupling. The volute, base, inlet flange, and outlet flange are all cast as a single integral unit.

　　The pump body and cover of the IS-type single-stage diesel pump unit are split at the back side of the impeller—this is commonly referred to as the "rear-opening" structural design. Its advantage lies in the ease of maintenance: during servicing, the pump body, suction piping, discharge piping, and motor remain stationary. All that’s required is to remove the intermediate coupling component of the extended coupling, after which the rotor assembly can be easily withdrawn for inspection and repair.

　　The pump casing—comprising the pump body and pump cover—forms the pump’s working chamber. The rotor, which includes the impeller, shaft, and rolling bearings, is housed within this chamber. The suspension bearing assembly supports the rotor components, while the rolling bearings bear both the radial and axial forces exerted on the pump.

　　To balance the axial force of the pump, most pumps are equipped with sealing rings both at the front and back of the impeller, and a balance hole is provided on the rear cover plate of the impeller. However, since some pumps have relatively small axial forces, their impellers do not have sealing rings or balance holes on the back side.

　　The pump’s axial sealing ring consists of a packing gland (9), a packing ring (10), and packing material (11) to prevent air intake or excessive water leakage. If the pump impeller is balanced, the cavity equipped with soft packing is connected to the impeller’s suction inlet. When the liquid at the impeller inlet is under vacuum, air can easily enter along the shaft sleeve surface. Therefore, a packing ring is installed in the packing chamber, and pressure water from the pump chamber is directed through a small hole in the pump cover to the packing ring for effective sealing. If the pump impeller does not have balancing holes, since the liquid pressure on the back side of the impeller exceeds atmospheric pressure, there will be no air leakage issue, and thus a packing ring is not required.

　　To prevent shaft wear, a shaft sleeve is installed at the point where the shaft passes through the stuffing box. An O-ring seal is fitted between the shaft sleeve and the shaft to prevent air or water leakage along the mating surfaces.

　　The pump is driven via an extended flexible coupling connected to the electric motor. When viewed from the drive end, the pump rotates clockwise.

Single-stage diesel engine pump unit – IS-type single-stage centrifugal pump performance range:

　　The IS-type single-stage diesel water pump features a simple structure, reliable performance, compact size, light weight, excellent cavitation resistance, low power consumption, and convenient operation and maintenance.

　　The IS-type single-stage diesel water pumps boast wide versatility and come in a total of 140 specifications across the entire series, yet they use only four different types of shafts. Within the same specification, the shaft, bearings, and shaft seals are all interchangeable. Moreover, the entire series of pumps features just four different types of suspensions.

　　The pump speed is available in two options: 2900 and 1450 revolutions per minute.

　　Performance is as follows: 2900 rpm, 1450 rpm

　　Maximum flow rate: 240 m³/min, 400 m³/min

　　Maximum total head: 125 meters, 55 meters

　　Maximum rotational speed: 3,500 rpm (when used with a 60 Hz power supply, the impeller diameter is reduced).

　　Maximum operating temperature: 80℃

　　The suction line pressure is allowed up to 0.3 MPa, while the pump’s maximum operating pressure is 1.6 MPa.

　　For performance parameters, please directly refer to the pump selection page.

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.

41000 m²

Square meters of land area

100 %

100% factory pass rate

41000 m²

Square meters of land area

100 %

100% factory pass rate

What is your typical delivery time?

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 。

Do you have centrifugal pumps in stock?

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.

What information should I provide when requesting a quote?

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.

What products do you mainly produce?

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.

Could you help me with the selection?

Certainly! If the water pump model is not selected accurately, there will be big problems. If you choose a smaller one, it won't meet your needs; if you choose a larger one, it will waste electricity and fuel, increasing your costs.

Why is it so slow to get a price quote?

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.

Pipeline diesel engine pump unit

Fire-fighting diesel engine pump unit

Pipeline diesel engine pump unit

Fire-fighting diesel engine pump unit

+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

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Self-balancing multistage pump

Multistage pump

Coal Mine Safety Certified Multi-stage Pump

Vertical multistage pump

Integrated pump station

Vacuum pump

Fire pump

Constant-pressure water supply equipment

Other pumps

Genuine accessories

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