Changsha Zoomlian Pump Co., Ltd. 长沙中联泵业股份有限公司

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    Horizontal Multi-stage Booster Pump

    Publication Date:

    2025-09-05

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    The horizontal multistage booster pump is a horizontally mounted, single-suction, multistage, segmental/sectional centrifugal pump featuring an advanced and rational design. It boasts high efficiency, excellent anti-cavitation performance, minimal vibration, smooth and reliable operation, and an extended service life. Primarily designed to handle clean water or other liquids with physical and chemical properties similar to water, this pump can also be adapted for applications involving hot water, oils, corrosive fluids, or even media containing abrasive particles—simply by modifying the material of its flow components, adjusting the sealing configuration, and incorporating an additional cooling system.

    The horizontal multistage booster pump series—efficient, energy-saving products developed and manufactured by Changsha Zhonglian Pump Industry, a subsidiary of the centrifugal pump factory—includes the D-type series multistage horizontal booster pumps equipped with balancing devices, as well as the DP-type series self-balancing horizontal multistage centrifugal booster pumps that feature no balancing device. These pumps are ideal for industrial and municipal water supply and drainage systems, boosting water pressure in high-rise buildings, supporting garden sprinkler irrigation, providing fire-fighting pressure, facilitating long-distance water delivery, and ensuring efficient circulation of both hot and cold water in heating systems and bathroom applications. They are widely used across various industries, including mining, power generation, petrochemicals, steel production, metallurgy, municipal services, food processing, and pharmaceuticals.

    D-Type Series Horizontal Multistage Booster Pump Models:

    The D-series horizontal multistage centrifugal booster pumps utilize a hydraulic model that is recognized nationally as an efficient and energy-saving product, placing them at the forefront of technology within the industry. The suction port is positioned horizontally, while the discharge port extends vertically upward, perpendicular to the horizontal plane. The pump’s casing components—such as the suction section, middle section, discharge section, and bearing housing—are integrally connected via tension bolts, and the number of stages in the pump is selected based on the desired head. The shaft seal employs either soft packing or mechanical seals; among these, D-type pumps predominantly use packing seals, whereas DF and DY models typically feature mechanical seals. This design ensures reliable sealing performance, a straightforward structure, and convenient, rapid maintenance. Additionally, the shaft adopts a fully enclosed configuration, guaranteeing complete isolation from the conveyed medium, preventing corrosion, and extending the pump’s service life significantly.

    D-Type Horizontal Multistage Booster Pump

    D-type multi-stage centrifugal horizontal booster pump: Designed for conveying clean water or liquids with physical and chemical properties similar to clean water—provided they are free of solid particles and have temperatures below 80°C. Ideal for use in mining, industrial facilities, and urban water supply and drainage projects, this pump can also serve as a secondary high-pressure boiler feedwater pump. The wetted components are made of cast iron, while the shaft is constructed from 45# steel.

    The DF-type horizontal corrosion-resistant stainless steel multistage booster pump is designed for conveying corrosive liquids that are free of solid particles and have temperatures ranging from -20°C to 105°C. Users can rationally select the pump material, sealing type, pump structure, and determine the motor capacity based on factors such as the name, concentration, specific gravity, operating temperature, and inlet pressure of the medium being pumped. Flow components are available in either cast steel or stainless steel, with the material choice depending on the temperature and corrosiveness of the liquid being handled.

    DY-type multi-stage horizontal centrifugal booster pump for petroleum use: Designed for conveying oils or petroleum products that are free of solid particles, have temperatures ranging from -20°C to 105°C, and exhibit viscosities below 120 centistokes. The wetted components are available in cast iron, cast steel, and cast stainless steel, with the material selected based on the temperature of the medium being pumped.

    MD-type mining horizontal multistage booster pump: Designed for conveying neutral mine water and other similar wastewater containing particles up to 1.5% by volume, with particle size no larger than 0.5 mm, and operating at temperatures ranging from -20°C to 80°C. The wetted parts are made of ductile iron or other suitable materials.

    The DG-type high-temperature horizontal multistage boiler feedwater booster pump is suitable for conveying clear water at temperatures below 280°C, or non-corrosive liquids with physical and chemical properties similar to water.

    DP-Type Series Self-Balanced Horizontal Multistage Booster Pumps:

    The DP-type series self-balancing horizontal multistage centrifugal booster pumps feature advanced hydraulic models, representing an efficient and energy-saving product independently developed by Changsha Zoomlion Pump Industry. These pumps serve as a reliable replacement for D-type horizontal multistage centrifugal pumps. Equipped with a new throttling and pressure-reducing device, these pumps not only minimize leakage and enhance efficiency but also provide additional support, ensuring safe and stable operation. Featuring a first-stage impeller with excellent cavitation resistance, along with a double-suction impeller at the initial stage, combined with robust materials, this pump is ideally suited for applications that demand high levels of cavitation margin. Moreover, thanks to the absence of a traditional balancing mechanism, the rotor of this symmetrical multistage pump eliminates issues like wear on the balance disc and axial pulsations. As a result, the alignment between the impeller and diffuser remains consistently optimal, preventing the significant efficiency drop often seen in D-type horizontal multistage centrifugal pumps due to balance disc wear and subsequent rotor displacement. Additionally, the elimination of balanced water leakage reduces volumetric losses, thereby boosting overall pump efficiency and lowering shaft power consumption. On average, these pumps achieve 2% to 3% higher efficiency compared to conventional multistage pumps.

    DP-Type Series Self-Balanced Horizontal Multistage Centrifugal Booster Pumps

    DP-type self-balancing multistage horizontal centrifugal booster pump: Designed for conveying clean water or liquids with physical and chemical properties similar to water, provided they are free of solid particles and have a temperature below 80°C.

    MDP-type self-balancing mining horizontal multistage booster pump: Designed for conveying neutral mine water and other similar wastewater containing solid particles at a concentration of ≤1.5%, with particle size up to 1.3 mm, and at temperatures below 80°C.

    DFP-type stainless steel self-balancing horizontal corrosion-resistant multistage booster pump: Designed for conveying corrosive liquids free of solid particles and at temperatures below 80°C. The pump material can be rationally selected based on the specific properties of the medium being transported.

    DYP-type petroleum self-balancing multistage horizontal booster pump: Designed for conveying oil-based media that are free of solid particles, have temperatures below 80°C, and exhibit viscosities less than 120 centistokes.

    DGP-type high-temperature self-balancing horizontal multistage boiler feedwater booster pump: Designed for conveying clean water or liquids with physical and chemical properties similar to clean water, at temperatures ranging from -20°C to 210°C, and free of solid particles. Ideal for medium-, low-, and high-pressure feedwater applications.

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