DL Series Vertical Multistage Centrifugal Pump, High Efficiency

DL Series Vertical Multistage Centrifugal Pump, High Efficiency

DL/DLR Vertical Multistage Clean-Water Pump – Constant-Pressure Booster for High-Rise & Fire Systems

  • Reliable vertical multistage pump for high-rise water supply, fire boosting & municipal systems | Flow: 6.2–300 m³/h | Head: 23.6–250 m | Power: 1.5–200 kW
  • Vertical sectional design saves 40% floor space vs. horizontal pumps
  • 2–12 stages deliver stable 30–250m head for high-rise systems
  • Precision-balanced rotor ensures <78dB low-vibration 24/7 operation
  • Dual sealing options for clean/hot water & mild corrosives
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Product Overview

The DL Series Vertical Multistage Centrifugal Pump is a vertical, segmented multistage centrifugal pump designed for high-rise building water supply, boiler feedwater, and constant-pressure boosting systems.

 It solves the problem of insufficient pressure in vertical distribution systems by delivering stable high head output through multistage hydraulic energy transfer.

 It is suitable for clean water or liquids with physical and chemical properties similar to water in urban water supply, fire protection, and industrial circulation systems.

✔ For projects requiring accurate head matching, technical consultation before final selection is recommended.

Model Designation

DL Series Vertical Multistage Centrifugal Pump, High Efficiency

Applications

  • High-rise building secondary water supply and pressure zoning systems
  • Boiler feedwater and hot water circulation systems
  • Firefighting pipeline booster systems
  • Industrial cooling water circulation
  • Municipal water transfer and distribution stations

Engineering Advantages

  • Vertical multistage segmented hydraulic structure ensures stable high head output and smooth pressure curve.
  • Coaxial inline suction and discharge configuration minimizes installation footprint and simplifies piping layout.
  • Precision-machined impeller and diffuser channels improve hydraulic efficiency and reduce vibration.
  • Axial thrust balancing structure reduces bearing load and enhances long-term operational stability.
✔ For projects requiring system pressure stability and vertical installation optimization, engineering evaluation before configuration is recommended.

System Components

The DL Series Vertical Multistage Centrifugal Pump mainly consists of:

  • Pump shaft and shaft sleeve
  • Multistage impellers and diffusers
  • Suction and discharge casing sections
  • Mechanical seal assembly
  • Bearing assembly
  • Motor coupling connection

Technical Specifications

Operating Conditions

  • Flow rate: 6.2–300 m³/h
  • Head: 23.6–225 m
  • Power range: 1.5–200 kW
  • Speed: 1450 rpm
  • Liquid temperature: ≤ 80°C
  • Working pressure: ≤ 2.5 MPa

Service Conditions

  • Suitable for clean water or non-corrosive liquids without solid particles.
  • Ambient temperature ≤ 40°C.
  • Installation environment shall be free of explosive or aggressive gases.
  • Foundation must be rigid to prevent vibration amplification.

Detailed parameter tables are provided below.

Installation & Dimensions

Outline Drawing

DL Series Vertical Multistage Centrifugal Pump, High Efficiency

Performance Data

No. Name Material / Model No. Name Material / Model
1 Motor Y Series (V5) 4-pole 12 Discharge Section HT200
2 Coupling HT200 13 Balance Sleeve HT200
3 Elastic Block Rubber 14 Balance Drum HT200
4 Bearing Gland HT200 15 Final Stage Diffuser HT200
5 Bearing Nut 45 Steel 16 Intermediate Section HT200
6 Bearing Housing HT200 17 Diffuser HT200
7 Bearing 180 Series 18 Impeller HT200
8 Water-block Sleeve 45 Steel 19 Suction Section HT200
9 Asbestos Gland HT200 20 Lower Shaft Sleeve 45 Steel
10 Asbestos Asbestos 21 Lower Bearing Copper Alloy
11 Stuffing Box Body HT200 22 Shaft 45 Steel / 2Cr13
Note:
1. This pump type can be customized as a hot water model.
2. The asbestos packing can be replaced with a mechanical seal.
3. Please specify these requirements when ordering; pricing will be adjusted accordingly.

Performance Parameters

Model Stages Speed Efficiency NPSHr Flow Head Power Weight
r/min % M m3/h M kw Kg
40DL6.2-11.2*2 2 1450 40 3.19 6.2 23.6 1.5 152
40DL6.2-11.2*3 3 1450 40 3.19 6.2 35.4 2.2 169
40DL6.2-11.2*4 4 1450 40 3.19 6.2 47.2 3 186
40DL6.2-11.2*5 5 1450 40 3.19 6.2 59 4 203
40DL6.2-11.2*6 6 1450 40 3.19 6.2 70.8 4 220
40DL6.2-11.2*7 7 1450 40 3.19 6.2 82.6 5.5 237
40DL6.2-11.2*8 8 1450 40 3.19 6.2 94.4 5.5 254
40DL6.2-11.2*9 9 1450 40 3.19 6.2 106.2 7.5 271
40DL6.2-11.2*10 10 1450 40 3.19 6.2 118 7.5 /
40DL6.2-11.2*11 11 1450 40 3.19 6.2 129.8 7.5 /
40DL6.2-11.2*12 12 1450 40 3.19 6.2 141.6 11 /
Model Stages Speed Efficiency NPSHr Flow Head Power Weight
r/min % M m3/h M kw Kg
50DL12.6-12.2*2 2 1450 54 2.66 12.6 24.4 3 15.3
50DL12.6-12.2*3 3 1450 54 2.66 12.6 36.6 3 18
50DL12.6-12.2*4 4 1450 54 2.66 12.6 48.8 4 23.1
50DL12.6-12.2*5 5 1450 54 2.66 12.6 61 5.5 33
50DL12.6-12.2*6 6 1450 54 2.66 12.6 73.2 5.5 24
50DL12.6-12.2*7 7 1450 54 2.66 12.6 85.4 7.5 15
50DL12.6-12.2*8 8 1450 54 2.66 12.6 97.6 7.5 18
50DL12.6-12.2*9 9 1450 54 2.66 12.6 109.8 11 22
50DL12.6-12.2*10 10 1450 54 2.66 12.6 122 11 /
Model Stages Speed Efficiency NPSHr Flow Head Power Weight
r/min % M m3/h M kw Kg
65DL30-16*2 2 1450 62 2.82 30 32 5.5 349
65DL30-16*3 3 1450 62 2.82 30 48 7.5 390
65DL30-16*4 4 1450 62 2.82 30 64 11 460
65DL30-16*5 5 1450 62 2.82 30 80 15 509
65DL30-16*6 6 1450 62 2.82 30 96 15 537
65DL30-16*7 7 1450 62 2.82 30 112 18.5 603
65DL30-16*8 8 1450 62 2.82 30 128 22 639
65DL30-16*9 9 1450 62 2.82 30 144 22 667
65DL30-16*10 10 1450 62 2.82 30 160 30 720
Model Stages Speed Efficiency NPSHr Flow Head Power Weight
r/min % M m3/h M kw Kg
80DL50-20*2 2 1450 70 2.5 50 40 11 461
80DL50-20*3 3 1450 70 2.5 50 60 15 522
80DL50-20*4 4 1450 70 2.5 50 80 22 608
80DL50-20*5 5 1450 70 2.5 50 100 30 728
80DL50-20*6 6 1450 70 2.5 50 120 30 768
80DL50-20*7 7 1450 70 2.5 50 140 37 822
80DL50-20*8 8 1450 70 2.5 50 160 45 898
80DL50-20*9 9 1450 70 2.5 50 180 45 938
80DL50-20*10 10 1450 70 2.5 50 200 55 /
Model Stages Speed Efficiency NPSHr Flow Head Power Weight
r/min % M m3/h M kw Kg
100DL72-20*2 2 1450 72 2.8 72 40 15 521
100DL72-20*3 3 1450 72 2.8 72 60 18.5 599
100DL72-20*4 4 1450 72 2.8 72 80 30 727
100DL72-20*5 5 1450 72 2.8 72 100 37 781
100DL72-20*6 6 1450 72 2.8 72 120 37 821
100DL72-20*7 7 1450 72 2.8 72 140 45 897
100DL72-20*8 8 1450 72 2.8 72 160 55 1044
100DL72-20*9 9 1450 72 2.8 72 180 55 1084
100DL72-20*10 10 1450 72 2.8 72 200 75 /
Model Stages Speed Efficiency NPSHr Flow Head Power Weight
r/min % M m3/h M kw Kg
100DL100-20*2 2 1450 72 3.5 100 40 18.5 554
100DL100-20*3 3 1450 72 3.5 100 60 30 687
100DL100-20*4 4 1450 72 3.5 100 80 37 746
100DL100-20*5 5 1450 72 3.5 100 100 45 827
100DL100-20*6 6 1450 72 3.5 100 120 55 979
100DL100-20*7 7 1450 72 3.5 100 140 75 1159
100DL100-20*8 8 1450 72 3.5 100 160 75 1204
100DL100-20*9 9 1450 72 3.5 100 180 90 1354
100DL100-20*10 10 1450 72 3.5 100 200 90 /
Model Stages Speed Efficiency NPSHr Flow Head Power Weight
r/min % M m3/h M kw Kg
150DL150-20*2 2 1450 80 2.8 150 40 30 569
150DL150-20*3 3 1450 80 2.8 150 60 37 707
150DL150-20*4 4 1450 80 2.8 150 80 45 771
150DL150-20*5 5 1450 80 2.8 150 100 55 857
150DL150-20*6 6 1450 80 2.8 150 120 75 1060
150DL150-20*7 7 1450 80 2.8 150 140 75 1245
150DL150-20*8 8 1450 80 2.8 150 160 90 1295
Model Stages Speed Efficiency NPSHr Flow Head Power Weight
r/min % M m3/h M kw Kg
150DL160-25*2 2 1450 76 3.5 160 50 37 873
150DL160-25*3 3 1450 76 3.5 160 75 55 1086
150DL160-25*4 4 1450 76 3.5 160 100 75 1291
150DL160-25*5 5 1450 76 3.5 160 125 90 1466
150DL160-25*6 6 1450 76 3.5 160 150 110 1633
150DL160-25*7 7 1450 76 3.5 160 175 132 1803
150DL160-25*8 8 1450 76 3.5 160 200 132 1873
150DL160-25*9 9 1450 76 3.5 160 225 160 2003
Model Stages Speed Efficiency NPSHr Flow Head Power Weight
r/min % M m3/h M kw Kg
200DL300-20*2 2 1450 79 5 300 40 55 983
200DL300-20*3 3 1450 79 5 300 60 75 1196
200DL300-20*4 4 1450 79 5 300 80 110 1845
200DL300-20*5 5 1450 79 5 300 100 132 1975
200DL300-20*6 6 1450 79 5 300 120 160 2120
200DL288-30*2 2 1450 77.9 3.7 288 60 75 /
200DL288-30*3 3 1450 77.9 3.7 288 90 110 /
200DL288-30*4 4 1450 77.9 3.7 288 120 132 /
200DL288-30*5 5 1450 77.9 3.7 288 150 160 /
200DL288-30*6 6 1450 77.9 3.7 288 180 200 /

Installation Diagram

DL Series Vertical Multistage Centrifugal Pump, High Efficiency

Performance Data（2）

Model

 Stages L H H1 H2 B b n-φd Inlet Flange Outlet Flange
Dj Djn Dj2 n-dj Dc Dcn Dc2 n-φdc
40DL6.2-11.2 2 225 938 112 170 350 300 4-φ18 150 40 110 4-φ18 150 40 110 4-φ18
40DL6.2-11.2 3 225 1043 112 230 350 300 4-φ18 150 40 110 4-φ18 150 40 110 4-φ18
40DL6.2-11.2 4 225 1103 112 290 350 300 4-φ18 150 40 110 4-φ18 150 40 110 4-φ18
40DL6.2-11.2 5 225 1183 112 350 350 300 4-φ18 150 40 110 4-φ18 150 40 110 4-φ18
40DL6.2-11.2 6 225 1243 112 410 350 300 4-φ18 150 40 110 4-φ18 150 40 110 4-φ18
40DL6.2-11.2 7 225 1378 112 470 350 300 4-φ18 150 40 110 4-φ18 150 40 110 4-φ18
40DL6.2-11.2 8 225 1438 112 530 350 300 4-φ18 150 40 110 4-φ18 150 40 110 4-φ18
40DL6.2-11.2 9 225 1538 112 590 350 300 4-φ18 150 40 110 4-φ18 150 40 110 4-φ18
40DL6.2-11.2 10 225 1598 112 650 350 300 4-φ18 150 40 110 4-φ18 150 40 110 4-φ18
40DL6.2-11.2 11 225 1658 112 710 350 300 4-φ18 150 40 110 4-φ18 150 40 110 4-φ18
40DL6.2-11.2 12 225 1803 112 770 350 300 4-φ18 150 40 110 4-φ18 150 40 110 4-φ18

Model

 Stages L H H1 H2 B b n-φd Inlet Flange Outlet Flange
Dj Djn Dj2 n-dj Dc Dcn Dc2 n-φdc
50DL12.6-12.2 2 220 1084 104 189 360 305 4-φ18 165 50 125 4-φ18 150 40 110 4-φ18
50DL12.6-12.2 3 220 1152 104 257 360 305 4-φ18 165 50 125 4-φ18 150 40 110 4-φ18
50DL12.6-12.2 4 220 1240 104 325 360 305 4-φ18 165 50 125 4-φ18 150 40 110 4-φ18
50DL12.6-12.2 5 220 1383 104 393 360 305 4-φ18 165 50 125 4-φ18 150 40 110 4-φ18
50DL12.6-12.2 6 220 1451 104 461 360 305 4-φ18 165 50 125 4-φ18 150 40 110 4-φ18
50DL12.6-12.2 7 220 1559 104 529 360 305 4-φ18 165 50 125 4-φ18 150 40 110 4-φ18
50DL12.6-12.2 8 220 1629 104 597 360 305 4-φ18 165 50 125 4-φ18 150 40 110 4-φ18
50DL12.6-12.2 9 220 1780 104 665 360 305 4-φ18 165 50 125 4-φ18 150 40 110 4-φ18
50DL12.6-12.2 10 220 1848 104 733 360 305 4-φ18 165 50 125 4-φ18 150 40 110 4-φ18

Model

 Stages L H H1 H2 B b n-φd Inlet Flange Outlet Flange
Dj Djn Dj2 n-dj Dc Dcn Dc2 n-φdc
65DL30-16 2 260 1306 170 199 430 370 4-φ24 185 65 145 4-φ18 165 50 125 4-φ18
65DL30-16 3 260 1426 170 279 430 370 4-φ24 185 65 145 4-φ18 165 50 125 4-φ18
65DL30-16 4 260 1591 170 359 430 370 4-φ24 185 65 145 4-φ18 165 50 125 4-φ18
65DL30-16 5 260 1716 170 439 430 370 4-φ24 185 65 145 4-φ18 165 50 125 4-φ18
65DL30-16 6 260 1796 170 519 430 370 4-φ24 185 65 145 4-φ18 165 50 125 4-φ18
65DL30-16 7 260 1901 170 599 430 370 4-φ24 185 65 145 4-φ18 165 50 125 4-φ18
65DL30-16 8 260 2021 170 679 430 370 4-φ24 185 65 145 4-φ18 165 50 125 4-φ18
65DL30-16 9 260 2101 170 759 430 370 4-φ24 185 65 145 4-φ18 165 50 125 4-φ18
65DL30-16 10 260 2246 170 839 430 370 4-φ24 185 65 145 4-φ18 165 50 125 4-φ18

Model

 Stages L H H1 H2 B b n-φd Inlet Flange Outlet Flange
Dj Djn Dj2 n-dj Dc Dcn Dc2 n-φdc
80DL50-20 2 280 1515 120 277 450 400 4-φ24 200 80 160 8-φ18 185 65 145 4-φ18
80DL50-20 3 280 1649 120 366 450 400 4-φ24 200 80 160 8-φ18 185 65 145 4-φ18
80DL50-20 4 280 1865 120 455 450 400 4-φ24 200 80 160 8-φ18 185 65 145 4-φ18
80DL50-20 5 280 2030 120 544 450 400 4-φ24 200 80 160 8-φ18 185 65 145 4-φ18
80DL50-20 6 280 2120 120 633 450 400 4-φ24 200 80 160 8-φ18 185 65 145 4-φ18
80DL50-20 7 280 2270 120 722 450 400 4-φ24 200 80 160 8-φ18 185 65 145 4-φ18
80DL50-20 8 280 2385 120 811 450 400 4-φ24 200 80 160 8-φ18 185 65 145 4-φ18
80DL50-20 9 280 2475 120 900 450 400 4-φ24 200 80 160 8-φ18 185 65 145 4-φ18
80DL50-20 10 280 2665 120 989 450 400 4-φ24 200 80 160 8-φ18 185 65 145 4-φ18

Model

 Stages L H H1 H2 B b n-φd Inlet Flange Outlet Flange
Dj Djn Dj2 n-dj Dc Dcn Dc2 n-φdc
100DL72-20 2 285 1616 180 293 470 405 4-φ24 220 100 180 8-φ18 200 80 160 8-φ18
100DL72-20 3 285 1784 180 396 470 405 4-φ24 220 100 180 8-φ18 200 80 160 8-φ18
100DL72-20 4 285 1932 180 499 470 405 4-φ24 220 100 180 8-φ18 200 80 160 8-φ18
100DL72-20 5 285 2060 180 602 470 405 4-φ24 220 100 180 8-φ18 200 80 160 8-φ18
100DL72-20 6 285 2248 180 705 470 405 4-φ24 220 100 180 8-φ18 200 80 160 8-φ18
100DL72-20 7 285 2421 180 808 470 405 4-φ24 220 100 180 8-φ18 200 80 160 8-φ18
100DL72-20 8 285 2524 180 911 470 405 4-φ24 220 100 180 8-φ18 200 80 160 8-φ18
100DL72-20 9 285 2677 180 1014 470 405 4-φ24 220 100 180 8-φ18 200 80 160 8-φ18
100DL72-20 10 285 2780 180 1117 470 405 4-φ24 220 100 180 8-φ18 200 80 160 8-φ18

Model

 Stages L H H1 H2 B b n-φd Inlet Flange Outlet Flange
Dj Djn Dj2 n-dj Dc Dcn Dc2 n-φdc
100DL100-20 2 285 1493 180 293 470 405 4-φ24 220 100 180 8-φ18 200 80 160 8-φ18
100DL100-20 3 285 1655 180 396 470 405 4-φ24 220 100 180 8-φ18 200 80 160 8-φ18
100DL100-20 4 285 1777 180 499 470 405 4-φ24 220 100 180 8-φ18 200 80 160 8-φ18
100DL100-20 5 285 1807 180 602 470 405 4-φ24 220 100 180 8-φ18 200 80 160 8-φ18
100DL100-20 6 285 1984 180 705 470 405 4-φ24 220 100 180 8-φ18 200 80 160 8-φ18
100DL100-20 7 285 2111 180 808 470 405 4-φ24 220 100 180 8-φ18 200 80 160 8-φ18
100DL100-20 8 285 2213 180 911 470 405 4-φ24 220 100 180 8-φ18 200 80 160 8-φ18
100DL100-20 9 285 2415 180 1014 470 405 4-φ24 220 100 180 8-φ18 200 80 160 8-φ18
100DL100-20 10 285 2517 180 1117 470 405 4-φ24 220 100 180 8-φ18 200 80 160 8-φ18

Model

 Stages L H H1 H2 B b n-φd Inlet Flange Outlet Flange
Dj Djn Dj2 n-dj Dc Dcn Dc2 n-φdc
150DL150-20 2 310 1680 150 315 470 410 4-φ24 285 150 240 8-φ23 245 125 210 8-φ18
150DL150-20 3 310 1840 150 430 470 410 4-φ24 285 150 240 8-φ23 245 125 210 8-φ18
150DL150-20 4 310 2020 150 545 470 410 4-φ24 285 150 240 8-φ23 245 125 210 8-φ18
150DL150-20 5 310 2260 150 660 470 410 4-φ24 285 150 240 8-φ23 245 125 210 8-φ18
150DL150-20 6 310 2445 150 775 470 410 4-φ24 285 150 240 8-φ23 245 125 210 8-φ18
150DL150-20 7 310 2610 150 890 470 410 4-φ24 285 150 240 8-φ23 245 125 210 8-φ18
150DL150-20 8 310 2725 150 1005 470 410 4-φ24 285 150 240 8-φ23 245 125 210 8-φ18
150DL150-20 9 310 3240 150 1120 470 410 4-φ24 285 150 240 8-φ23 245 125 210 8-φ18

Model

 Stages L H H1 H2 B b n-φd Inlet Flange Outlet Flange
Dj Djn Dj2 n-dj Dc Dcn Dc2 n-φdc
150DL160-25 2 345 1895 155 372 550 480 4-φ24 285 150 240 8-φ23 245 125 210 8-φ18
150DL160-25 3 345 2135 155 504 550 480 4-φ24 285 150 240 8-φ23 245 125 210 8-φ18
150DL160-25 4 345 2335 155 636 550 480 4-φ24 285 150 240 8-φ23 245 125 210 8-φ18
150DL160-25 5 345 2515 155 768 550 480 4-φ24 285 150 240 8-φ23 245 125 210 8-φ18
150DL160-25 6 345 2800 155 900 550 480 4-φ24 285 150 240 8-φ23 245 125 210 8-φ18
150DL160-25 7 345 2975 155 1032 550 480 4-φ24 285 150 240 8-φ23 245 125 210 8-φ18
150DL160-25 8 345 3110 155 1164 550 480 4-φ24 285 150 240 8-φ23 245 125 210 8-φ18
150DL160-25 9 345 3240 155 1260 550 480 4-φ24 285 150 240 8-φ23 245 125 210 8-φ18

Model

 Stages L H H1 H2 B b n-φd Inlet Flange Outlet Flange
Dj Djn Dj2 n-dj Dc Dcn Dc2 n-φdc
200DL300-20 2 380 2010 182 600 600 550 4-φ24 340 200 295 12-φ23 285 150 240 8-φ23
200DL300-20 3 380 2320 182 760 600 550 4-φ24 340 200 295 12-φ23 285 150 240 8-φ23
200DL300-20 4 380 2660 182 905 600 550 4-φ24 340 200 295 12-φ23 285 150 240 8-φ23
200DL300-20 5 380 2860 182 1050 600 550 4-φ24 340 200 295 12-φ23 285 150 240 8-φ23
200DL300-20 6 380 3010 182 1200 600 550 4-φ24 340 200 295 12-φ23 285 150 240 8-φ23
200DL288-30 2 380 2185 182 600 600 550 4-φ24 340 200 295 12-φ23 285 150 240 8-φ23
200DL288-30 3 380 2355 182 760 600 550 4-φ24 340 200 295 12-φ23 285 150 240 8-φ23
200DL288-30 4 380 2795 182 905 600 550 4-φ24 340 200 295 12-φ23 285 150 240 8-φ23
200DL288-30 5 380 2945 182 1050 600 550 4-φ24 340 200 295 12-φ23 285 150 240 8-φ23
200DL288-30 6 380 3095 182 1200 600 550 4-φ24 340 200 295 12-φ23 285 150 240 8-φ23

Installation Dimensions

rigid connection

DL Series Vertical Multistage Centrifugal Pump, High Efficiency
1 Ball Valve 2 Flexible Joint 3 Pressure Gauge 4 Vacuum Pressure Gauge
5 Gate Valve 6 Elbow Pipe 7 Straight Pressure Pipe 8 Concrete Base
 

 
 

flexible connection

DL Series Vertical Multistage Centrifugal Pump, High Efficiency
1 Ball Valve 2 Flexible Joint 3 Pressure-Tapping Straight Pipe 4 Gate Valve 5 Elbow Pipe
6 Pump 7 Connection Plate 8 JGD Vibration Isolator 9 Concrete Base

Installation Diagram（2）

 Connection Plate Dimensions

DL Series Vertical Multistage Centrifugal Pump, High Efficiency
 Rigid Connection Concrete Base Diagram

DL Series Vertical Multistage Centrifugal Pump, High Efficiency
Model Connecting Plate Dimensions Rigid Connection Concrete Pedestal Foundation Dimensions
A×A B×B C×C H d1 d2 D×D E×E F×F H d h
40DL 300 540 600 80 φ14或φ18 φ18 300 500 560 250 60 200
50DL 305 540 600 80 φ14或φ18 φ18 305 500 560 250 60 200
65DL 370 740 800 80 φ14或φ18 φ24 370 500 560 250 80 250
80DL 400 740 800 80 φ18或φ22 φ24 400 600 660 350 80 250
100DL 410 740 800 80 φ18或φ22 φ24 410 600 660 350 80 250
150DL 550 840 900 80 φ18或φ22 φ24 550 700 760 350 80 250
200DL 600 840 900 80 φ22 φ24 600 800 880 350 80 250

How to Select a Pump Model

  • Determine required flow rate and total dynamic head including pipeline loss.
  • Ensure duty point falls within high-efficiency region of performance curve.
  • Verify medium temperature and compatibility with seal materials.
  • For vertical high-rise systems, confirm zoning pressure limits.
  • Consider VFD control if system demand varies.
✔ For projects requiring accurate hydraulic matching and pressure zoning analysis, technical consultation before final selection is recommended.

Engineering Notes

  • Not suitable for liquids containing abrasive solids or fibrous materials.
  • Proper axial alignment must be verified after installation.
  • Long pipeline systems should include non-return valves.
  • Continuous operation systems should include standby units.

Compliance & Quality Assurance

  • Factory hydraulic performance testing
  • Hydrostatic pressure test of casing
  • Rotor dynamic balance inspection
  • Bearing clearance and vibration verification
  • Material traceability documentation
  • Optional third-party inspection

Safety Notice

  • Do not operate under dry-running condition
  • Ensure suction priming before startup
  • Disconnect power before maintenance
  • Do not exceed rated discharge pressure

OEM & Customization

This pump series supports engineered configuration and duty-based matching.

Available options include:

  • Motor voltage & frequency
  • Mechanical seal type and configuration
  • Wetted parts material selection
  • Surface coating and corrosion protection

Configuration is determined based on duty point and project specifications.

FAQs

  • Q: Can the pump operate under VFD control?
    A: Yes, operation under VFD is permitted within rated hydraulic limits.
  • Q: What is the allowable working pressure?
    A: The maximum allowable working pressure is 2.5 MPa.
  • Q: What seal options are available?
    A: Mechanical seal is standard; special configurations available upon request.
  • Q: What type of medium is permitted?
    A: Clean water or non-corrosive liquids without solid particles.
  • Q: What rotational speeds are available?
    A: Standard speeds are 1450 rpm and 2900 rpm.
  • Q: How is axial thrust controlled?
    A: Axial thrust is reduced through balancing hydraulic structure.