Changsha Zhonglian Pump Industry Co., Ltd.

language

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

Horizontal Multi-stage Split-Casing Centrifugal Pump (BB3)

Horizontal Multi-stage Split-Casing Centrifugal Pump (BB3)

Traffic: 17–1250 m³/h (50 Hz)

Head: 21-2083m (50Hz)

Temperature: -80 °C to 200 °C

Flow rate (60 Hz): 20–1500 m³/h

Head (60Hz): 30-3000m

Product Overview: The DKS series horizontal multistage, split-case centrifugal pumps are API BB3 pump models—centrifugal pumps designed for heavy industrial applications such as petroleum and chemical industries. They conform to the American Petroleum Institute (API) Standard 610 and feature a double-suction, axially split, multistage impeller arrangement with symmetrical layout. These pumps are specifically engineered to handle high-flow and high-pressure operating conditions and are typically used in applications requiring...

Hotline:

+86 0731-88632200

classification：

Oil pump

keyword：

Horizontal Single-Stage Fire Pump

Product consultation

Back to superior

Product overview Product parameters Why choose us? Frequently Asked Questions

Product Overview

Product Overview

The DKS series horizontal multistage split-case centrifugal pumps, classified as API BB3 pumps, are centrifugal pumps designed for heavy industrial applications such as petroleum and chemical processing. They conform to the American Petroleum Institute (API) standard API 610 and feature a double-suction, axially split, multistage impeller arrangement with symmetrical layout. These pumps are engineered to handle high-flow and high-pressure operating conditions and are typically employed in heavy industrial settings that demand reliability—such as oil refining, chemical processing, and energy production.

Performance range

Flow rate: 17–1250 m³/h (50 Hz) / 20–1500 m³/h (60 Hz)

Head: 21–2083 m (50 Hz) / 30–3000 m (60 Hz)

Temperature: -80 °C to 200 °C

Product Advantages

High performance: The double-inlet design delivers high flow rate and high-pressure output, optimizing pump performance.
Corrosion Resistance: The material is made from a high-corrosion-resistant and wear-resistant alloy to withstand harsh operating environments.
Stability: The pump’s design reduces vibration and noise, enhancing operational stability and reliability.
Easy maintenance: The structural design facilitates maintenance and inspection, reducing downtime and maintenance costs.
Wide applicability: Capable of handling a variety of fluids, including corrosive, viscous, and liquids containing solid particles.
Pump Body Structure: This is a horizontal, two-end-supported, volute-type single-shell, axially split (also known as horizontally mid-open) multistage centrifugal pump with the shell supported near the centerline. The pump casing consists of upper and lower halves connected by several bolts around the casing periphery, facilitating maintenance and inspection.
Impeller Configuration: Depending on the specific suction conditions, the first-stage impeller can be configured with either a single-suction or double-suction design. The impellers are divided into two groups, separated by a central bushing or seal.
Force-balanced design: The radial force balance of the pump is achieved through a dual-volute design; axial force balance is realized by adopting a double-suction impeller for the first-stage impeller and arranging the remaining stages in a back-to-back configuration (or using single-suction impellers arranged back-to-back throughout), eliminating the need for an additional axial force balancing mechanism. The residual axial force is borne by thrust bearings.
Bearing Configuration: Depending on the pump size (and load conditions), radial bearings can be either rolling bearings or plain bearings; thrust bearings can be angular contact ball bearings installed back-to-back or tilting-pad bearings. Lubrication methods can include oil-air lubrication, oil mist lubrication, or pressurized oil lubrication.
Cooling methods: Depending on the specific operating conditions and pump size, the bearings can be cooled by natural air cooling with heat sinks, fan cooling, water-jacket cooling, or coil cooling.

Scope of application

Petroleum industry: Liquid transportation used in crude oil transportation, petroleum processing, and petrochemical processes.

Chemical Industry: Used for the transportation of chemicals and fluid handling in chemical reaction processes.

Energy production: including cooling water delivery and fuel transportation for power plants.

Structural features

The axial split casing, full-pressure double-volute structure, and centrally balanced shaft installation ensure that the pressure in the two sealing chambers is equal.

1. Precision casting

Closed impeller, dynamically balanced, with the impeller’s circumferential motion preventing horizontal displacement.

2. Wear-resistant ring

The impeller wear ring is fitted and secured by axial screws.

3. Axis

The dimensions are sufficient to meet the stringent requirements for shaft dynamics and power transmission.

4. Sealed cavity

Meets API 682 requirements; both single-face and double-face mechanical seals are acceptable.

5. Bushing

Minimize internal flow between the high-pressure and low-pressure sides.

6. Bearing chamber

Lubrication with pure oil or purified oil is available upon request. The bearing end covers are equipped with bearing spacers. The drive end features roller bearings, while the non-drive end is equipped with angular contact bearings as standard. Other configurations are available upon request.

7. Symmetrical impeller arrangement

Up to a 14-stage impeller.

8. Special impeller design.

For applications with low NPSHA, a custom double-suction impeller can be provided to meet the operating conditions.

9. Special bearing design

To meet all customer needs, we can offer other bearing designs:

The heavy-duty axial thrust bearing configuration, featuring a thrust bearing design with forced-feed lubrication, can accommodate high axial loads while also supporting higher radial loads via a radial sleeve bearing. It can be mounted on a slide rail with a rotating-direction flange.

Structural diagram

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.

DYP-type Self-balancing Multistage High-Pressure Oil Pump (BB4)

None

DYP-type Self-balancing Multistage High-Pressure Oil Pump (BB4)

None

+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

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

Online Consultation

Business License

COOKIES

Our website uses cookies and similar technologies to personalize the advertising shown to you and to help you get the best experience on our website. For more information, see our Privacy & Cookie Policy

COOKIES

required

These cookies are necessary for basic functions such as payment. Standard cookies cannot be turned off and do not store any of your information.

analyze

These cookies collect information, such as how many people are using our site or which pages are popular, to help us improve the customer experience. Turning these cookies off will mean we can't collect information to improve your experience.

Feature

These cookies enable the website to provide enhanced functionality and personalization. They may be set by us or by third-party providers whose services we have added to our pages. If you do not allow these cookies, some or all of these services may not function properly.

advertise

These cookies help us understand what you are interested in so that we can show you relevant advertising on other websites. Turning these cookies off will mean we are unable to show you any personalized advertising.