Products Description
The DLF series vertical multistage centrifugal pump utilizes internationally advanced fluid dynamics design concepts. Core components are manufactured through precision processes, including stamping, drawing, welding, and polishing, resulting in a compact overall structure and a rational layout. With a core vertical multi-stage architecture, the pumps utilize multiple sets of impellers connected in series to boost pressure, achieving high head and large flow rates. Their modular design offers significant advantages: compact size, light weight, low noise, easy maintenance, and an aesthetically pleasing appearance. XJY vertical multistage pumps are widely used in daily life, industrial production, agricultural irrigation, water treatment systems, and other fields, meeting the needs of conveying clean water, softened water, and mildly corrosive liquids (subject to material requirements).
Model Description & Structural Diagram
| No. | Name | No. | Name | No. | Name |
| 1 | Motor | 7 | Impeller spacer | 13 | Pump head |
| 2 | Coupling | 8 | Intermediate chamber with bearing | 14 | Intermediate chamber |
| 3 | Mechanical seal | 9 | Inlet chamber | 15 | Sealing ring |
| 4 | Discharge chamber | 10 | Pump base | 16 | Tie rod bolt |
| 5 | Pump shaft | 11 | Slip-on flange | 17 | Base |
| 6 | Impeller | 12 | Protective cover |
Performance Parameters
| Flow Rate | 1.0~110m3/h |
| Head | 6~305m |
| Power | 0.37-45kW |
| Speed | 2900rpm |
| Caliber | DN20~DN100 |
| Liquid Temperature | ﹣15℃～120℃ |
| Max. Ambient Temperature | +45℃ |
| Operation Pressure | 1.6MPa/4.0MPa |
Main Features
Vertical and compact structure, small area occupation, and easy installation.
The modular mechanical seal structure makes installation and maintenance safer and more convenient, ensuring the reliability of the mechanical seal.
The wet components are made of stainless steel, which does not contaminate the media, has a long service life, and an attractive appearance.
The electric motor shaft is directly and precisely connected to the pump shaft via a coupling.
Low noise and less vibration.
Standardized design and outstanding universality.
Applications
Cooling water system
Water Supply: Used for secondary water supply in high-rise buildings, centralized water supply in residential areas, and hot water circulation systems in hotels and shopping malls.
Industrial Liquid Transportation: Suitable for production line pressurization, cooling system circulation, and boiler water feed applications in the electronics, chemical, food, and pharmaceutical industries. Made of 304/316L stainless steel, it meets food-grade and corrosion-resistant requirements.
Air-condition system
Agricultural Irrigation: Used for farmland drip irrigation, sprinkler system pressurization, orchard irrigation, and fish pond aeration and water supply
Water Treatment: In wastewater treatment, pure water production, and seawater desalination projects, this product is used for raw water transportation, filtration system pressurization, and clean water reuse. Polishing internal flow channels prevents impurities and ensures water treatment accuracy.
Technical Specifications
| Model |
Motor Power (KW) |
Capacity (m³/h) |
5.0 | 6.0 | 7.0 | 8.0 | 9.0 | 10 | 11 | 12 |
| DLF8-20 | 0.75 | Head (m) | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 |
| DLF8-30 | 1.1 | 31 | 30 | 29 | 28 | 26 | 24 | 23 | 20 | |
| DLF8-40 | 1.5 | 41 | 40 | 39 | 37 | 35 | 32 | 30 | 27 | |
| DLF8-50 | 2.2 | 52 | 50 | 48 | 46 | 44 | 41 | 37 | 34 | |
| DLF8-60 | 2.2 | 62 | 60 | 58 | 55 | 53 | 49 | 45 | 41 | |
| DLF8-80 | 3.0 | 83 | 80 | 78 | 74 | 70 | 65 | 60 | 54 | |
| DLF8-100 | 4.0 | 104 | 100 | 97 | 92 | 88 | 80 | 75 | 68 | |
| DLF8-120 | 4.0 | 125 | 120 | 116 | 110 | 105 | 97 | 90 | 81 | |
| DLF8-140 | 5.5 | 146 | 140 | 136 | 129 | 123 | 113 | 105 | 95 | |
| DLF8-160 | 5.5 | 166 | 160 | 144 | 147 | 140 | 130 | 120 | 108 | |
| DLF8-180 | 7.5 | 187 | 180 | 175 | 166 | 156 | 146 | 135 | 122 | |
| DLF8-200 | 7.5 | 208 | 200 | 194 | 185 | 175 | 162 | 150 | 135 |
Why Choose XJY-PUMP
As a one-stop pump solutions provider, XJY-Pump Industry offers full lifecycle service support for the DLF series centrifugal vertical multistage pumps, ensuring customers can purchase and use them with confidence:
Our professional technical team uses fluid dynamics simulation software to optimize the model selection based on the customer's requirements, including the conveying medium (clean water/corrosive liquid), flow rate, head, and installation space. We provide a one-on-one design solution to ensure that equipment parameters precisely match actual needs.
From raw material procurement to finished product delivery, products undergo 12 quality inspection processes (material testing, dimensional inspection, performance testing, and leak testing), ensuring that each pump complies with ISO9001 quality management system standards.
Detailed installation manuals and video tutorials provide operators with training on equipment operation, maintenance, and troubleshooting, ensuring proper use and extending the lifespan of the equipment.
The vertical multistage centrifugal pump comes with an 18-month warranty (24 months for the motor), with free repairs and parts replacement during the warranty period. A lifetime supply of genuine parts ensures long-term, stable operation.
One-stop Vertical Multistage Pumps Factory in China
The DLF series vertical multistage centrifugal pump is a high-efficiency fluid conveying equipment developed by Xinjiuyang Pump Industry with advanced technology and innovative processes. Whether providing a stable water supply in daily life or precise pressurization in industrial production lines, it helps customers reduce costs and increase efficiency with its compact, energy-efficient, and reliable performance. If you have any questions or would like more product details (such as performance curves, customer cases, and customized solutions), please contact us. We will provide you with professional, one-stop pump solutions!
