Vertical Multi-Stage Centrifugal Pump / Vertical Multistage Centrifugal Pump
The DL series Vertical Multistage Pumps are single-suction, multi-stage vertical segmental centrifugal pumps. These pumps are widely used in high-rise building water supply systems, long-distance water transfer, and fire protection applications. They are designed for pumping clear water or liquids with similar physical and chemical properties to water, with a typical operating temperature below 80°C. The DLR model is suitable for temperatures up to 120°C.
Performance Range
Capacity Q: 20-200 GPM
Head H: 21 - 217 m
Material of Flow Passage Components:
The Vertical Multistage Pumps can be customized with different materials. Common configurations include:
| Recommended Material Configuration (For reference only) | |||||
| Item | Clean Water | Drinking Water | Sewage Water | Hot Water | Sea Water |
| Case & Cover | Gray Iron (HT250) | S.S 304 | Ductile Iron (QT500) | Cast Steel | Duplex S.S 2205 |
| Impeller | Gray Iron (HT250) | S.S 304 | Ductile Iron (QT500) | 2Cr13 | Duplex S.S 2205 |
| Wearing Ring | Gray Iron (HT250) | S.S 304 | Ductile Iron (QT500) | 2Cr13 | Duplex S.S 2205 |
| Shaft & Sleeve | C.S 45 | S.S 420 | 40Cr | 40Cr | Duplex S.S 2205 |
| Column Pipe | C.S Q235 | C.S Q235 | C.S Q235 | C.S Q235 | Duplex S.S 2205 |
| Remarks: Detailed material list will depend on the liquid type and site conditions. | |||||
Model Instruction
For example, 65DL16X5:
- 65: Inlet diameter (mm)
- DL: Series of Vertical Multistage Pump
- DLR: Series for hot water
- 16: Single-stage head (m)
- 5: Number of stages. Total head = 16 x 5 = 80 m
Structure
The DL series vertical multistage pumps are mounted vertically. The inlet is located at the top, and the outlet is at the bottom, both in a horizontal direction. The number of stages can be adjusted based on the required head. Depending on installation conditions, the outlet can rotate 90°, 180°, or 270° to adjust the direction. Axial forces are balanced by a balancing drum. The pump features a compact design, low noise, and space-saving characteristics. The shaft seal can be either packing or mechanical seal.
Materials of Medium-Contacting Parts
The suction casing, stage casing, discharge casing, vane, and impeller are typically made of cast iron. The shaft is made of high-quality carbon steel. If customers have special requirements for materials, they should consult the manufacturer.
It is a slab of steel cast with molten steel and pressed after cooling.
It is flat, rectangular and can be rolled directly or cut from a wide steel strip.
According to the thickness of the steel plate, the thin steel plate <4 mm (the thinest 0.2 mm), the medium thick steel plate 4~60 mm, the extra thick steel plate 60~115 mm.
The steel plate is divided into hot rolling and cold rolling according to rolling.
The width of the sheet is 500~1500 mm; The width of the thickness is 600~3000 mm. The sheet is divided into ordinary steel, high-quality steel, alloy steel, spring steel, stainless steel, tool steel, heat-resistant steel, bearing steel, silicon steel and industrial pure iron sheet, etc. According to professional use, there are oil drum board, enamel board, bulletproof board, etc.; According to the surface coating, there are galvanized sheet, tin-plated sheet, lead-plated sheet, plastic composite steel plate and so on. It is a slab of steel cast with molten steel and pressed after cooling.
It is flat, rectangular and can be rolled directly or cut from a wide steel strip.
According to the thickness of the steel plate, the thin steel plate <4 mm (the thinest 0.2 mm), the medium thick steel plate 4~60 mm, the extra thick steel plate 60~115 mm.
The steel plate is divided into hot rolling and cold rolling according to rolling.
The width of the sheet is 500~1500 mm; The width of the thickness is 600~3000 mm. The sheet is divided into ordinary steel, high-quality steel, alloy steel, spring steel, stainless steel, tool steel, heat-resistant steel, bearing steel, silicon steel and industrial pure iron sheet, etc. According to professional use, there are oil drum board, enamel board, bulletproof board, etc.; According to the surface coating, there are galvanized sheet, tin-plated sheet, lead-plated sheet, plastic composite steel plate and so on.
Steel Plate,Stainless Plate,Stainless Steel Diamond Plate,Wear Resistant Plate
Shandong Shifeng Metal Products Co., Ltd. , https://www.qfgygs.com