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

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    High-pressure centrifugal water pump

    Publication Date:

    2025-09-05

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    Pumps are classified into three categories—low-pressure, medium-pressure, and high-pressure pumps—based on the fluid pressure they generate. Typically, pumps with outlet pressures below 2 MPa are referred to as low-pressure pumps, those between 2 and 6 MPa are called medium-pressure pumps, and pumps exceeding 6 MPa are designated as high-pressure pumps. High-pressure water pumps are primarily divided into two main types according to their working structures: impeller pumps and positive-displacement pumps. Among these, centrifugal pumps are a type of impeller pump, owing to Centrifugal pump It boasts advantages such as high rotational speed, small size, lightweight design, high efficiency, large flow rate, simple structure, smooth and continuous performance, ease of operation and maintenance, long service life, and minimal maintenance requirements—making it the most widely applicable type of equipment.

    High-Pressure Centrifugal Pump Model Selection

    High-pressure water pumps can deliver a variety of media, ranging from tap water to industrial liquids, and are designed to handle different temperature, flow rate, and pressure ranges. These pumps are suitable for non-corrosive or mildly corrosive liquids and can transport liquids at extremely high temperatures—up to or exceeding 200°C—and achieve head heights of 1680 meters or more.

    D., MD, DY, DF, and DG models are horizontal multistage centrifugal high-pressure pumps designed as single-suction, multi-stage, segmented centrifugal pumps. They are intended for conveying clean water or other liquids with physical and chemical properties similar to water, with the liquid temperature not exceeding 80°C. These pumps feature high efficiency, a wide performance range, safe and stable operation, low noise levels, long service life, and convenient installation and maintenance. Additionally, by modifying the pump’s wetted components, sealing methods, and incorporating an enhanced cooling system, these pumps can also handle hot water, oils, corrosive fluids, or media containing abrasive particles. They are ideally suited for industrial and municipal water supply and drainage applications, boosting water pressure in high-rise buildings, supporting irrigation systems in landscaping projects, providing fire protection with pressurized water, facilitating long-distance water delivery, and ensuring efficient circulation of both hot and cold water in heating systems and bathroom setups—making them perfect for equipment integration or other high-pressure water supply needs.

    ↑Click the image to learn about the D-type high-pressure centrifugal water pump Product details and Price Information ↑

    ZPD (DG, DF, DY), MD (P) type Self-balanced multi-stage centrifugal high-pressure water pump To meet user needs and accelerate the development of high-pressure multistage pump technology, this product integrates advanced technologies from similar foreign products with our company's extensive design experience. It utilizes a hydraulic model endorsed by national standards for highly efficient and energy-saving products, developed specifically in accordance with the API610 standard. This innovative high-efficiency, high-pressure multistage centrifugal pump boasts a temperature resistance exceeding 200°C and a head capacity surpassing the 1,680-meter mark. Key advantages include a wide efficiency range, an extensive performance spectrum, excellent cavitation resistance, safe and stable operation, low noise levels, fewer wear-prone components, and convenient installation and maintenance. Moreover, the pump’s reliability has been significantly enhanced—its trouble-free operating time is more than three times longer than that of conventional pumps, dramatically reducing users' maintenance costs and ultimately lowering the overall lifecycle cost of the pump. This high-pressure, self-balancing, segment-type centrifugal pump introduces a groundbreaking innovation in the traditional multistage centrifugal pump design. By eliminating the conventional axial force balancing mechanism found in multi-stage pumps, it provides an ideal replacement for pumps previously reliant on balance discs or balance drums. Without these balancing components, the pump eliminates both disc friction losses associated with balance disks and backflow losses caused by balancing systems. As a result, the pump achieves an efficiency improvement of 5% to 14% compared to similar multi-stage pumps. Additionally, this design flawlessly addresses common issues like wear on balance disks and their seats—or even rotor seizure—caused by failure of the balancing system, thereby extending the pump’s service life considerably.

    ↑Click the image to learn about the self-balancing multi-stage centrifugal high-pressure water pump Product details and Price Information ↑

    The DL-type vertical high-pressure water pump is a new-generation high-pressure pump product developed by our company in response to the actual needs of the high-rise building water supply market, as well as in compliance with the national Fire Department standard GB 6245-1998, "Performance Requirements and Test Methods for Fire Pumps." This pump is designed for conveying media that are free of hard particles and physically or chemically similar to water. It features an advanced, highly efficient, and energy-saving domestic hydraulic model, along with a vertical sectional design, ensuring high efficiency, a smooth performance curve, and an extensive operational range. The pump fully meets the relevant regulations set forth by the Fire Department, making it ideal for satisfying the diverse needs of various users. Primarily used in high-rise buildings for domestic water supply, fire-fighting constant-pressure water supply, automatic sprinkler systems, and automatic water curtain systems, this pump can also be applied in industrial and mining settings for water supply and drainage, long-distance water transportation, integration with various types of equipment, and even for process water requirements across different industries.

    ↑Click the image to learn about the DL-type vertical high-pressure water pump Product details and Price Information ↑

    Product Features of Multi-Stage High-Pressure Water Pumps

    High-efficiency and energy-saving

    We adhere to specialized production, employing unique approaches in product model selection, mold fabrication, and the casting process for hydraulic components. We utilize highly efficient and advanced hydraulic models, and all flow-path components are precision-cast to ensure precise dimensions and exceptional surface smoothness. As a result, our pumps demonstrate an average efficiency that is more than 2% higher than that of typical multi-stage pumps currently available on the market, delivering outstanding energy-saving performance.


    Advanced process equipment

    To ensure the assembly performance of its products, Zhonglian Pump Industry is equipped with comprehensive parts-cleaning facilities, guaranteeing that each component undergoes meticulous cleaning before final assembly. In addition to standard practices such as material inspection, hydrostatic pressure testing, and static balance tests, all pump rotor components rated at Level 6 or higher undergo a post-assembly check for shaft runout—specifically controlling the runout value within 5 microns—followed by dynamic balancing tests conducted according to G2.5 standards. After complete assembly, the shaft runout and axial movement relative to the coupling are re-inspected once again, ensuring the highest quality in product assembly.


    Unique Structure

    An O-ring seal is installed between the balance ring and the pump mating surface to prevent high-pressure water from entering the balance chamber, thereby reducing wear on the balance disc and extending the product's service life.


    Choose materials wisely

    Depending on different user requirements, the balance disc and balance ring materials can be made from hard alloy overlay welding, alloy steel, or QT600Mn2 ductile cast iron alloy, offering high surface hardness, excellent wear resistance, and extended product lifespan. The flow passages of MD-type pumps are crafted from high-alloy wear-resistant cast iron or high-grade wear-resistant ductile iron, ensuring superior durability and wear resistance.


    Good surface quality

    Utilizing precision casting mold technology and automated spray painting machines for paint application, the surface quality is excellent, and the overall appearance is aesthetically pleasing.

    Matching Motor

    The motors are typically configured as Y-series motors. For pumps used in underground mine operations involving flammable and explosive gases, explosion-proof motors must be employed, and these motors are required to meet the corresponding protection levels and bear the appropriate explosion-proof markings.

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