Product Overview of the GDL Vertical Pipeline Multistage Centrifugal Pump

The GDL series is a vertical, single-suction, multistage sectional pipeline centrifugal pump, with the suction and discharge ports aligned on the same axis. The rotor assembly comprises the shaft, impeller, impeller retaining sleeve, shaft sleeve, and other components; the suction section, middle section, and discharge section are joined by tension bolts. The shaft seal is a mechanical seal, lubricated and cooled by pressurized water from the balance chamber. The product complies with the JB/T 2727-93 standard “Vertical Multistage Cylindrical Centrifugal Pumps—Types and Basic Parameters.”

This pump is a state-of-the-art model, featuring energy efficiency, a compact footprint, easy installation, and stable performance. Its casing is made of high‑quality ZG1Cr18Ni9Ti stainless steel, while its shaft seal employs a wear‑resistant mechanical seal, ensuring leak‑free operation and long service life. Axial thrust is balanced hydraulically, resulting in smooth, low‑noise operation; under comparable conditions, it outperforms DL‑type pumps. It can be conveniently installed mid‑span on a horizontal pipeline. Fully capable of meeting the water supply, drainage, and fire‑protection requirements of high‑rise buildings, deep‑well mines, and similar applications, this pump is the optimal choice for conveying hot or cold water, as well as general fluids whose physicochemical properties are similar to those of water, across a wide range of industries.

Application Scope of GDL Vertical Pipeline Multistage Centrifugal Pumps

This pump model is primarily suited for circulating and boosting both hot and cold clean water in high-pressure systems, providing water supply to high-rise buildings through parallel operation of multiple pumps, as well as for fire‑fighting, boiler feedwater and cooling‑water systems, and for conveying various flushing fluids.

Product Features of the GDL Vertical Pipeline Multistage Centrifugal Pump

1. Convenient installation and maintenance: With a pipeline‑type design, the inlet and outlet can be mounted at any location and in any orientation along the pipeline, just like a valve, making installation and maintenance exceptionally easy.

2. Aesthetic appearance: Featuring a stainless steel outer casing and a pipeline‑style design, it boasts an attractive exterior.

3. Lower operating and maintenance costs: Utilizing reliable mechanical seals, it features a low failure rate and reduced operational and maintenance expenses.

4. Low cost: By employing a high-speed motor, this pump series boasts lightweight construction, compact dimensions, and reduced manufacturing costs.

5. Unique components for noise reduction: A distinctive hydraulic component design and excellent flow performance minimize flow-induced noise to the greatest extent.

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Significance of the GDL Vertical Pipeline Multistage Centrifugal Pump

80GDL36-12X5

80—Inlet and outlet diameters (mm)

GDL—Vertical Multistage Pipeline Centrifugal Pump

36-Design-point nominal flow rate (m³/h)

12-Stage head (m)

5-series