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DL-type vertical multistage sectional centrifugal pump
DL and DLR multistage sectional centrifugal pumps are suitable for industrial and municipal water supply and drainage, booster pumping in high-rise buildings, fire‑fighting pressure boosting, long‑distance water transmission, heating systems, bathroom applications, boiler chilled‑and‑hot‑water circulation boosting, water delivery in air‑conditioning refrigeration systems, and equipment integration. The operating temperature of the DL model shall not exceed 80°C, while that of the DIR model shall not exceed 120°C.
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Multistage Pump Series
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Product Description
Application Scope of DL-Type Vertical Multistage Centrifugal Pumps
DL and DLR series multistage sectional centrifugal pumps are suitable for industrial and municipal water supply and drainage, booster pumping in high-rise buildings, fire‑fighting pressure boosting, long‑distance water delivery, heating systems, bathroom applications, boiler hot‑and‑cold water circulation boosting, water supply for air‑conditioning refrigeration systems, and equipment integration. The operating temperature of the DL model shall not exceed 80°C, while that of the DIR model shall not exceed 120°C.
Product Features of the DL Vertical Multistage Centrifugal Pump
1. Novel structure and reliable operation: The balance drum (disc) has been eliminated, with axial forces balanced hydraulically, thereby completely resolving the issues of corrosion, seizing, and wear associated with conventional balance drums, thus ensuring more dependable operation.
2. Lower operating and maintenance costs: Utilizing reliable mechanical seals, it features a low failure rate and reduced operational and maintenance expenses.
3. Smooth operation and low noise: Equipped with a low-speed motor, this pump series delivers smooth operation and reduced noise levels.
4. 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 DL-Type Vertical Multistage Centrifugal Pump
For example: 150 DL(R) 150 - 30×3
150 – Pump inlet and outlet diameter (mm)
DL – Vertical Multistage Centrifugal Pump
R – Hot-water type
150 – Pump design flow rate (m³/h)
30 – Pump design point single-stage head (m³/h)
3 – Series
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