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+86-13730919470 / +86 13953218345
vera_yang@sinopowersd.cn
vera_yang@sinopowersd.cn
28F, Zhaoyin Mansion, 36 Hong-kong Middle Road, Qingdao, Shandong Province, China 266071
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Key Advantages:
*Horizontal Multistage Segmented Design: Ensures stable high-pressure output with minimal vibration, suitable for long-term continuous operation in power plants.
*Mechanical Seal: Bidirectional rotation compatible, 100% leak-free, reducing maintenance frequency and downtime risk.
*Roller Bearing Support: Grease-lubricated, 50,000h MTBF (Mean Time Between Failures), extending service life and lowering operational costs.
*Customizable Solutions: Tailored design for boiler feed pump replacement projects, with full technical calculation and budget control support.
DG Series Boiler Feed Water Pump – Key Parameters Comparison
| Manufacturer | Model Series | Flow Range (m³/h) | Head Range (m) | Efficiency Range (%) | Motor Power Range (kW) | Notes |
|---|---|---|---|---|---|---|
| Shenyang Pump | DG (Standard) | 3.75 – 750 | 49 – 780 | 35 – 82 | 3 – 2800 | Original DG standard; for medium/low pressure boilers |
| Zhonglian Pump | DG / DGP (Self-balanced) | 3.7 – 1350 | 49 – 1800 | 36 – 84 | 3 – 2800 | DGP is upgraded self-balanced version |
| Kaiquan Pump | DG / ZDG / High Pressure DG | 4 – 500 | 50 – 2000 | 40 – 83 | 5.5 – 3200 | ZDG for high temp; high pressure DG up to 2000m head |
| Shuanglun Pump | DG Series | 6 – 500 | 50 – 1200 | 38 – 81 | 4 – 2500 | Focus on medium pressure boiler replacement |
Shenyang Pump – DG Series (Original Standard)
| Model | Flow (m³/h) | Head (m) | Efficiency (%) | Motor Power (kW) |
|---|---|---|---|---|
| DG6-25×n | 3.75 – 7.5 | 70 – 320 | 35 – 48 | 3 – 15 |
| DG12-25×n | 7.5 – 15 | 68 – 325 | 42 – 55 | 5.5 – 30 |
| DG25-30×n | 15 – 30 | 90 – 450 | 50 – 65 | 11 – 75 |
| DG46-50×n | 30 – 50 | 150 – 700 | 58 – 72 | 30 – 220 |
| DG85-45×n | 50 – 100 | 135 – 630 | 62 – 75 | 45 – 315 |
| DG150-100×n | 100 – 200 | 300 – 1200 | 68 – 80 | 160 – 1250 |
2. Zhonglian Pump – DG / DGP Series
| Model | Flow (m³/h) | Head (m) | Efficiency (%) | Motor Power (kW) |
|---|---|---|---|---|
| DG6-25×n | 3.75 – 7.5 | 70 – 320 | 36 – 49 | 3 – 15 |
| DG12-25×n | 7.5 – 15 | 68 – 325 | 43 – 56 | 5.5 – 30 |
| DG46-80×n | 30 – 50 | 240 – 960 | 60 – 74 | 45 – 280 |
| DGP46-80×n(P) | 30 – 50 | 240 – 960 | 64 – 78 | 55 – 315 |
| DG85-45×n | 50 – 100 | 135 – 630 | 63 – 76 | 45 – 315 |
| DG155-67×n | 100 – 200 | 200 – 1000 | 69 – 81 | 132 – 1000 |
3. Shuanglun Pump – DG Series
| Model | Flow (m³/h) | Head (m) | Efficiency (%) | Motor Power (kW) |
|---|---|---|---|---|
| DG6-25×n | 6 – 8 | 50 – 300 | 38 – 48 | 4 – 15 |
| DG12-25×n | 10 – 16 | 50 – 300 | 44 – 56 | 7.5 – 30 |
| DG25-30×n | 20 – 35 | 90 – 450 | 52 – 65 | 15 – 75 |
| DG46-50×n | 35 – 55 | 150 – 700 | 58 – 72 | 37 – 220 |
| DG85-45×n | 70 – 110 | 135 – 630 | 62 – 75 | 45 – 315 |
4. Application Scenarios
Shenyang Pump: The preferred choice for original factory replacement and spare parts for aging power plants.
Zhonglian Pump: The DGP self-balanced series is suitable for energy-saving renovation and long-term continuous operation.
Shuanglun Pump: Cost-effective, suitable for replacement of small and medium-sized power plants and industrial boilers.
