DL Vertical Multistage Pump
Segmented Vertical Multistage Pump for High-Rise Water Supply & Fire Protection
DL vertical multistage pump is a sectional centrifugal pump designed for high-rise building water supply, fire protection systems, boiler circulation and industrial water services. Its vertically stacked multistage structure provides high head while reducing floor-space requirements, and the number of hydraulic stages can be matched to different pressure requirements. The pump is suitable for clean water and compatible liquids without solid particles or fibers. ZLZB® supplies DL vertical multistage pumps with model selection based on required flow, head, liquid temperature, installation conditions and project requirements.
Flow Range:
6.2–300 m³/h
Head Range:
23.6–200 m
Power Range:
1.5–200 kW
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Summary
DL vertical multistage pumps use a vertical sectional construction in which multiple hydraulic stages are arranged in series to achieve the required discharge head. This structure makes the pump suitable for high-rise domestic water supply, fire-fighting pressure systems, boiler and heating circulation, municipal water transfer and industrial water distribution. The compact vertical arrangement reduces installation footprint while allowing different stage combinations for different head requirements. ZLZB® supplies DL pumps for building, municipal and industrial projects, with selection according to required flow, total head, liquid temperature and operating conditions.
- Vertical sectional construction for high-head water systems
- Multiple hydraulic stages matched to required pressure
- Compact footprint for building and pump-room installation
- Suitable for high-rise domestic and fire water supply
- Applicable to boiler, heating and industrial water systems
- Model selection based on flow, head and project conditions
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Advantages
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Vertical Sectional Multistage Design
The DL pump uses a vertically stacked sectional structure with multiple hydraulic stages, providing high head while maintaining a compact installation footprint. -
Flexible Head by Stage Configuration
Different numbers of pump stages can be matched to the required system head, making DL pumps suitable for a wide range of building and industrial pressure requirements. -
High-Rise Water Supply Performance
The multistage hydraulic design provides stable pressure for high-rise domestic water supply, building booster systems and long-distance water delivery.
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Suitable for Fire Water Systems
DL vertical multistage pumps can be applied in fire water supply, constant-pressure systems and sprinkler applications when the selected configuration meets project requirements. -
Compact Pump-Room Installation
The vertical configuration reduces required floor area and is suitable for building pump rooms, municipal facilities and industrial water stations. -
Project-Based Pump Selection
ZLZB® supplies DL vertical multistage pumps selected according to required flow, total head, number of stages, liquid conditions and project requirements.
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DL Vertical Multistage Pump Applications
High-Rise Building Water Supply
Fire-Fighting & Sprinkler Systems
Boiler Feed & Heating Circulation
HVAC & Cooling Water Circulation
Industrial & Municipal Water Supply
| Application Area | Typical Use Case |
|---|---|
| High-Rise Building Water Supply | DL vertical multistage pump for residential towers, hotels, commercial buildings and other high-rise water systems requiring reliable water delivery at higher floors. |
| Fire-Fighting & Sprinkler Systems | High-head multistage centrifugal pump for fire water supply, sprinkler networks and pressure-maintenance systems in commercial and residential buildings. |
| Boiler Feed & Heating Circulation | Suitable for boiler water supply, heating circulation and compatible hot-water systems where continuous water delivery and sufficient system pressure are required. |
| HVAC & Cooling Water Circulation | Vertical multistage centrifugal pump for HVAC circulation, cooling-water transfer and air-conditioning systems in commercial buildings and industrial facilities. |
| Industrial & Municipal Water Supply | Used for factory water distribution, municipal water systems, public facilities and industrial water networks requiring high-head clean-water transfer. |
| Pressure Boosting Systems | The DL vertical multistage pump can be used in building booster systems and pressure-maintenance installations where stable delivery pressure is required. |
| Long-Distance Water Transfer | High-head vertical multistage pump for long-distance water transfer, pipeline delivery and clean-water systems where additional pumping head is needed to overcome elevation or pipeline resistance. |
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Product Specifications
| Item | Specification |
|---|---|
| Pump Type | Vertical Segmented Multistage Centrifugal Pump |
| Flow Range | 6.2–300 m³/h |
| Head Range | 23.6–200 m |
| Power Range | 1.5–200 kW |
| Liquid Temperature | ≤ 80°C |
| Wetted Material | Cast Iron (HT200); Shaft: 45 Steel / 2Cr13 |
| Connection | Flanged Connection |
| Frequency | 50 Hz |
| Motor Protection | IP55 (depending on motor configuration) |
| Standard Voltage | 3 × 380 V / 50 Hz (other voltages available on request) |
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Performance Curves
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Specification Data
| Model | Stages | Flow (m³/h) | Flow (L/s) | Head (m) | Speed (r/min) | Power (kW) | Efficiency (%) | Suction Lift (m) |
|---|
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FAQ
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How do I select the right DL vertical multistage pump?
Select the pump according to required flow, total head, liquid temperature and operating conditions. The number of hydraulic stages is selected according to the required head. ZLZB® can recommend a suitable DL model based on your project requirements. -
What are DL vertical multistage pumps mainly used for?
DL pumps are commonly used for high-rise building water supply, fire water systems, municipal and industrial water supply, boiler feed water and long-distance clean-water transfer. -
How does the number of stages affect a DL vertical multistage pump?
The hydraulic stages are arranged in series to increase pump head. Different stage configurations are selected according to the total pressure and head required by the water supply system.
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Can DL pumps be used for fire-fighting and sprinkler systems?
Yes. DL vertical multistage pumps can be applied in fire constant-pressure water supply and sprinkler systems when the selected pump performance, configuration and applicable project standards meet the system requirements. -
What liquids and temperatures are suitable for DL pumps?
Standard DL pumps are mainly used for clean water or liquids with similar properties and without solid particles. For higher-temperature water service, a suitable DLR or hot-water configuration should be selected according to the operating temperature. -
What information is required for a DL pump quotation?
Please provide the required flow, total head, liquid temperature, application, power supply and installation conditions. ZLZB® can then recommend the appropriate DL pump configuration and prepare a quotation.
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