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

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    GDL Vertical Centrifugal Multistage Pipeline Booster Pump

    Publication Date:

    2025-09-05

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    GDL Vertical Centrifugal Multistage Pipeline Booster Pump This is a product developed and manufactured by our company, based on both domestic and international user requirements as well as relevant fire safety standards. Vertical Multistage Pump This pump is designed and manufactured according to the JB/TQ6435-92 standard for pipeline pressurization, effectively addressing the issue of insufficient pipeline pressure that often prevents continuous medium transportation. Compared to currently used horizontal multistage centrifugal pumps, this model offers more convenient installation since its inlet, outlet, and connecting pipelines are all aligned on the same horizontal plane. The GDL booster pump features a wear-resistant mechanical seal for shaft sealing, and its motor shaft directly drives the impeller, ensuring high efficiency, low energy consumption, a compact structure, small size, lightweight design, and easy installation. Additionally, it can be easily connected in series based on specific requirements for head and flow rate.   The GDL vertical multistage pipeline booster pump is also a type of multistage hot-water pump, suitable for conveying high-temperature hot-water media. The operating temperature range is 0. °C ~120℃, with a working pressure of 1.6 MPa (16 kg/cm³). Flow rate: 5–300 m³/h; head: 5–250 m; speed: 2,900 rpm.

    GDL Vertical Centrifugal Multistage Pipeline Booster Pump Product Usage Requirements and Applications

    1. Temperature range: -15°C to +150°C;

    2. Work Pressure: Maximum pressure is 2.5 MPa, where system pressure = inlet pressure + pressure during valve-closing operation < 2.5 MPa;

    3. The ambient temperature should be below 40°C, with relative humidity not exceeding 95%.

    4. When conveying corrosive media and hot liquids, please specify at the time of ordering so that we can use special materials to meet your application requirements.

    The GDL high-head, high-pressure booster pump is designed for use in high-pressure systems to convey clean water or liquids with similar physical and chemical properties. It is primarily employed in industrial applications, urban high-rise building water supply, fire protection pipeline boosting, HVAC chilled and hot water circulation, long-distance water transportation, and production process circulation for pressurized delivery. Additionally, it is widely utilized in metallurgy, chemical industries, textiles, wood processing, paper manufacturing, as well as in hotels, bathhouses, and guesthouses for boosting and circulating high-temperature hot water in boiler systems. It also serves as a crucial pump in urban heating systems for heat distribution.

    1. Suitable for high-temperature hot water boosting and circulation in industries such as heating and boiler systems. Operating temperature: below 150°C.

    2. Suitable for pressurized water supply in high-rise buildings, landscape irrigation, cooling tower water intake, long-distance water transportation, air conditioning systems, refrigeration flushing, and circulation boosting of both cold and warm water in bathrooms; operating temperature below 80°C.

    3. Suitable for conveying corrosive media in process flows within industries such as food, pharmaceuticals, brewing, and chemical processing, with operating temperatures below 80°C.

    4. Suitable for conveying non-corrosive liquids in industrial environments where explosive mixtures are present—specifically in Class I fixed equipment located underground in methane or coal mine settings, as well as in Class IIA and IIB facilities, with temperature groups T1, T2, T3, or T4. The operating temperature must remain below 80°C.

    5. Suitable for conveying corrosive liquids in industries such as chemical, pharmaceutical, petroleum, food, and defense. It is also applicable to Class I fixed equipment in methane or coal mine environments, as well as industrial areas classified as Factory Groups IIA and IIB, where temperature groups T1, T2, T3, and T4 indicate the presence of explosive mixtures. Operating temperature must remain below 150°C.

    GDL Vertical Centrifugal Multistage Pipeline Booster Pump

    Example: 80GDL36-12X8

    80——Inlet and Outlet Diameters (mm)

    GDL——Vertical Multi-stage Boosting Pipeline Centrifugal Pump

    Model Meaning

    36 —— Rated Flow Rate (m³/h)
     

    12——Single-stage head (m)
     

    8——Number of Pump Stages

    GDL Vertical Centrifugal Multistage Pipeline Booster Pump Structural Diagram and Components

    1 Pump body, 2 Tension bolts, 3 Outer cylinder, 4 Impeller, 5 Impeller retaining sleeve, 6 Shaft sleeve, 7 Gasket, 8 Nut, 9 Pin, 10 Motor, 11 Coupling, 12 Coupling bracket, 13 Air nozzle, 14 Mechanical seal, 15 Shaft, 16 Middle section, 17 Sleeve nut, 18 Bearing bush, 19 Return water pipe assembly.

    GDL Vertical Centrifugal Multistage Pipeline Booster Pump Structural Features

    1. Advanced hydraulic model: high efficiency and wide performance range.

    2. Convenient Installation and Maintenance: Featuring a pipeline-style installation, the inlet and outlet can be mounted on pipes in any position or orientation—just like valves—making installation and maintenance exceptionally easy.

    3. Beautiful Appearance: Crafted with a high-quality stainless steel casing for an elegant look. It can also be custom-made as a fully stainless steel multistage centrifugal pump.

    4. Lower Operating and Maintenance Costs: Featuring high-quality mechanical seals that are wear-resistant, corrosion-proof, leak-free, and designed for an extended service life, these systems boast a low failure rate, resulting in reduced operational and maintenance expenses.

    5. Unique Components, Reduced Noise: The distinctive hydraulic component design ensures excellent flow performance while minimizing equipment noise.

    6. Vertical structure with a small footprint.

    The working principle of the GDL vertical centrifugal multistage pipeline booster pump   

    The GDL vertical centrifugal multistage pipeline booster pump features suction, with its inlet and outlet ports aligned on the same line, making installation convenient and allowing for easy horizontal placement between pipelines. The rotor assembly consists of components such as the shaft, impeller baffles, impellers, and shaft sleeves, while the inlet, middle, and outlet sections are securely connected using tension bolts. The shaft seal employs a mechanical seal, which is lubricated and cooled by pressurized water from the balance chamber. The GDL pipeline booster pump is an excellent choice for conveying both hot and cold water—or liquids whose physical and chemical properties closely resemble those of water. It boasts notable advantages, including energy efficiency, lightweight design, compact size, high efficiency, stable operation, minimal vibration and noise, extended service life, vertical installation capability, reduced footprint, and an aesthetically pleasing appearance. As a result, it stands out as the ideal next-generation product.

    When the GDL vertical multistage pipeline centrifugal pump is operating, the impeller—driven by the high-speed rotation of the motor shaft—becomes fully filled with liquid due to the centrifugal force generated by its rotation. As the impeller spins rapidly around the rotating shaft, it creates centrifugal force that flings the liquid outward along the central flow passages toward the outer edges of the channel. At this stage, both the pressure and velocity of the liquid increase simultaneously. The fluid then flows through the guide vanes into the next-stage impeller, continuing this process sequentially as the liquid interacts with each subsequent impeller and guide casing. This step-by-step interaction further enhances the liquid's kinetic energy, allowing the medium to gain significant head pressure as it gradually passes through every impeller stage.

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