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Vertical Centrifugal Pump, GDB Type Cooling Tower Pump
Vertical Centrifugal Pump, GDB Type Cooling Tower Pump
Pump description

Driven by a specially designed low-rotation-speed low-noise motor, the rotatable parts, including the motor and impeller, undergo a balance test to ensure the cooling tower pump is particularly suitable for occasions with high environmental noise requirements. The impeller of this pump type is below 30kW, and is directly mounted on the motor lengthened shaft. For pumps above 27kW, champ couplings are used to connect to the motor. Taking apart the pump cover and impeller requires no dismantling of the inlet and outlet pipelines, thus facilitating replacement of the seal and impeller. The water outlets, which all feature the same diameter and are located on the same axis, can be installed on the pipeline just like valves, ensuring installation is quick and easy.

Application

The vertical centrifugal pump GDB type cooling tower pump mainly transfers clean, non-corrosive water, or liquids with similar physiochemical properties to water and contain no solid particles or fibers. The GDB type cooling tower pump is a pipeline vertical single-stage (single-suction or double-suction) clean water pump. Due to the use of a low rotation speed motor, the noise and vibration levels during operation are greatly reduced, while the service life of the bearing and its quick-wear parts are longer. With a matching heat-rejection device, it is widely used for industrial and agricultural water supply and drainage, running water pressurization, high-rise building water supply, as well as the delivery of chilled water and warm water in central air-conditioning and heating circulation systems.

Performance range

Rotation speed: 1450r/min 980r/min
Capacity: 3.5-2340m3/h
Head: 5-71m
Power: 0.55-200KW

Working conditions

Maximum working temperature: 105℃
Maximum working pressure: 1.6Mpa

Rotation direction

Seen from the direction from the motor to the pump, the pump rotates clockwise.

Motor parameters

Protection level: IP44
Insulation grade: E
Standard voltage: 380V

If you have special requirements for motors, please inform us when ordering.
Vertical Centrifugal Pump, GDB Type Cooling Tower Pump
Main parts and structure drawings:
No. Spare parts Material
1 Pump casing Cast iron
2 Impeller Cast iron/bronze
3 Lower bearing Aldary
4 Pump cover Cast iron
5 Upper bearing Alloy
6 Mechanical seal Graphite/SIC
7 Motor
8 Motor block Cast iron
9 Coupling Cast Iron
10 Shaft 2Cr13
Installation
Vertical Centrifugal Pump, GDB Type Cooling Tower Pump

1. Inlet ball valve
2. Straight tube
3. Flexible plastic joint
4. Vibration damping washer

5. Base plate
6. Flexible plastic joint
7. Straight tube
8. Outlet check valve

9. Inlet
10. outlet

Model Explanation
Vertical Centrifugal Pump, GDB Type Cooling Tower Pump

① Low speed low noise pump
② Pump inlet diameter 100mm
③ Pump head 50m
④ Direct first cutting of the same type impeller
⑤ Direct second cutting of the same type impeller

Model Capacity Q Head H (m) Rotation Speed n (r/min) Break Power Pa (KW) Motor Power (KW) Pump Efficiency η (%) Net Positive Suction Head (NPSH) r (m) Weight (kg)
(m3/h) (l/s)
GDB32-5 6.3 1.74 5 1450 0.16 0.55 54 2.5 36
GDB32-8 6.3 1.74 8 1450 0.29 0.55 48 2.5 38
GDB32-12.5 3.75 6.3 7.5 1.04 1.74 2.08 13 12.5 11 1450 0.41 0.51 0.56 0.75 33 42 44 2.0 48
GDB32-20 3.75 6.3 7.5 1.04 1.74 2.08 21 20 19 1450 0.91 1.07 1.14 1.5 23 32 35 2.0 2.0 2.5 70
GDB32-20A 3.5 5.9 7.0 0.97 1.63 1.94 18 17 16 1450 0.78 0.93 0.98 1.1 22 30 33 2.0 2.0 2.5 66
GDB40-5 12.5 3.47 5 1450 0.27 0.55 62 2.5 38
GDB40-8 12.5 3.47 8 1450 0.49 0.75 60 2.5 47
GDB40-12.5 7.5 12.5 15 2.08 3.47 4.17 13.2 12.5 11.5 1450 0.63 0.77 0.85 1.1 43 55 57 2.0 2.0 2.5 56
GDB40-12.5A 7 11.7 14 1.94 3.25 3.89 11.5 11 10 1450 0.52 0.64 0.67 0.75 43 55 57 2.0 2.0 2.5 51
GDB40-20 7.5 12.5 15 2.08 3.47 4.17 21 20 19 1450 1.23 1.48 1.65 2.2 35 46 48 2.0 2.0 2.5 78
GDB40-20A 7 11.7 14 1.94 3.25 3.89 18 17.5 16.5 1450 1 1.24 1.37 1.5 35 45 47 2.0 2.0 2.5 72
GDB40-30 7.2 12 14 2.08 3.47 3.9 32 30 28 1450 2.3 2.5 2.6 3 25 37 41 2.0 2.0 2.5 102
GDB40-30A 6.5 11 13 1.8 3.1 3.6 24.5 24 22 1450 1.75 1.96 2.1 2.2 24.7 36 40 2.0 2.0 2.5 97
GDB50-8 10.8 18 21.6 3 5 6 9.5 8 7 1450 0.58 0.65 0.71 1.1 48 60 58 2.0 2.5 3.0 62
GDB50-8A 9.5 16 18 2.6 4.4 5 8 7 6 1450 0.43 0.51 0.53 0.75 48 60 56 2.0 2.5 3.0 58
GDB50-12.5 10.8 18 21.6 3 5 6 13.2 12.5 11 1450 0.83 1.11 1.21 1.5 47 55 58 2.0 2.5 3.0 69
Model Capacity Q Head H (m) Rotation Speed n (r/min) Break Power (KW) Motor Power (KW) Pump Efficiency η (%) Net Positive Suction Head (NPSH) r (m) Weight (kg)
(m3/h) (l/s)
GDB50-12.5A 9.5 16 18 2.6 4.4 5 11.6 10.5 10 1450 0.65 0.84 0.92 1.1 53 46 54 2.0 2.5 3.0 64
GDB50-17 10.8 18 21.6 3 5 6 19 17 14 1450 1.87 1.7 1.83 2.2 36 49 45 2.0 2.5 3.0 79
GDB50-20 10.8 18 21.6 3 5 6 23 21 18 1450 1.78 2.18 2.42 3 37 50 47 2.0 2.5 3.0 84
GDB50-30 10.8 18 21.6 3 5 6 33 30 25 1450 2.31 2.82 2.94 4 42 52 50 2.0 2.5 2.8 115
GDB50-30A 9.5 17 20.5 2.9 4.7 5.7 29 26 21.5 1450 1.83 2.36 2.44 3 41 51 49 2.0 2.5 3.0 104
GDB65-8 15 25 30 4.17 6.94 8.33 9 8 7.2 1450 0.67 0.79 0.86 1.5 55 69 68 2.5 2.5 3.0 71
GDB65-12 15 25 30 4.17 6.94 8.33 13.2 12.5 11.5 1450 1.06 1.31 1.44 2.2 51 65 67 2.5 2.5 3.0 82
GDB65-12A 14 23.4 28 3.89 6.5 7.78 11.5 11 10 1450 0.89 1.1 1.2 1.5 50 64 66 2.5 2.5 3.0 76
GDB65-20 15 25 30 4.17 6.94 8.33 21 20 18.8 1450 1.75 2.27 2.52 3 49 60 61 2.5 2.5 3.0 96
GDB65-20A 14 23.4 28 3.89 6.5 7.78 18.4 17.5 16.4 1450 1.44 1.86 2.06 2.2 49 60 69 2.5 2.5 3.0 91
GDB65-32 15 25 30 4.17 4.94 8.33 33 32 31 1450 3.4 4.19 4.6 5.5 39 52 56 2.5 2.5 3.0 126
GDB65-32A 14.3 23.8 28.5 3.97 6.61 7.97 29.5 28.5 26 1450 3.06 3.72 4.09 5.5 38 51 55 2.5 2.5 3.0 125
GDB65-32B 13.6 22.7 27.2 3.77 6.3 7.56 27 25 23 1450 2.54 3.13 3.45 4 38 51 55 2.5 2.5 3.0 103
GDB80-8 50 13.9 8 1450 1.47 2.2 75 3.0 96
GDB80-12 30 50 60 8.33 13.8 16.7 13.3 12.5 11.8 1450 1.84 2.33 2.61 4 60 73 74 2.0 2.5 3.0 110
GDB80-12A 28 46.8 56 7.83 13 15.3 11.9 11 10 1450 1.52 1.92 2.16 3 60 73 74 2.0 2.5 3.0 99
Model Capacity Q Head H (m) Rotation Speed n (r/min) Break Power (KW) Motor Power (KW) Pump Efficiency η (%) Net Positive Suction Head (NPSH) r (m) Weight (kg)
(m3/h) (l/s)
GDB80-20 30 50 60 8.33 13.8 16.7 23 20 15 1450 3.16 4 4.44 5.5 55 68 70 2.0 2.5 3.0 146
GDB80-20A 32 46 56 7.78 13 15.6 20 17 15 1450 1.16 3.28 3.63 4 54 68 70 2.0 2.5 3.0 128
GDB80-20B 25.6 42.8 51.1 7.1 11.8 14.2 15.5 14.5 13.5 1450 2.04 2.54 2.74 3 54 67 69 2.0 2.5 3.0 119
GDB80-32 30 50 60 8.33 13.9 16.7 34 32 30 1450 5.44 6.92 7.67 11 51 63 64 2.0 2.5 3.0 230
GDB80-32A 28.7 47.7 57.5 7.97 13.1 16.1 31 28.5 27 1450 4.74 6 6.7 7.5 51 63 64 2.0 2.5 3.0 175
GDB80-32B 25.7 42.9 51.6 7.14 11.9 14.3 25 23.5 22 1450 3.5 4.5 5 5.5 50 61 62 2.0 2.5 3.0 162
GDB100-12 60 100 120 16.7 27.8 33.3 14.5 12.5 11 1450 3.83 4.48 4.79 5.5 62 76 75 2.5 2.5 3.0 158
GDB100-12A 56 93.5 112 15.6 26 31.1 12.8 11 9.7 1450 3.17 3.7 3.96 4 62 76 75 2.5 2.5 3.0 141
GDB100-12B 52 88 105 14.4 24.4 29.1 11 9.5 8.3 1450 2.68 3.15 3.35 4 58.7 72 71 2.5 2.5 3.0 140
GDB100-15 81.2 125 134 22.6 34.7 37.2 17.5 15.5 14.8 1450 5.65 6.44 6.66 7.5 68.4 82 81 3.0 175
GDB100-19 60 90 120 16.7 27.8 33.3 21 19 15 1450 5.44 6.12 6.36 7.5 63 76 77 2.5 2.5 3.0 178
GDB100-19A 50 80 110 13.9 22.2 30.6 17 15 11.5 1450 3.73 4.35 4.53 5.5 62 75 76 2.5 2.5 3 165
GDB100-21 39 60 75 10.8 16.7 20.8 24 21 16 1450 3.98 4.7 4.74 5.5 64 73 69 2.5 3 3.5 164
GDB100-22 60 108 129.6 16.6 30 36 25 23 20 1480 7.16 10.1 11.76 15 57 67 100 2.5 3 3.5 237
GDB100-34 60 100 120 16.6 27.8 33.3 36 34 31 1480 8.44 11.9 13.5 18.5 70 75 75 3 276
GDB100-32 60 90 120 16.7 25 33.3 34 32 29 1480 9.58 10.7 12.88 15 70 78 75 2.5 2.5 3 283
Model Capacity Q Head H (m) Rotation Speed n (r/min) Break Power (KW) Motor Power (KW) Pump Efficiency η (%) Net Positive Suction Head (NPSH) r (m) Weight (kg)
(m3/h) (l/s)
GDB100-32A 60 90 115 16.7 25 33.3 31 28 25.5 1480 7.34 9.03 10.5 11 69 76 74 2.5 2.5 3.0 270
GDB100-32B 48 76 100 13.9 22.2 30.6 27 24 20 1480 5.19 6.62 7.46 7.5 68 75 73 2.5 2.5 3.0 225
GDB100-50 60 100 120 16.7 27.8 33.3 52 50 47 1480 16.1 21 23.6 30 58 65 67 2.5 2.5 3.0 441
GDB100-50A 56 93.6 112 15.6 26 31.2 46 44 41 1480 13.2 17.5 19.6 22 53 64 67 2.5 2.5 3.0 384
GDB100-50B 54.6 90 108 15.2 25.2 30 40 38 35 1480 11.2 14.6 16.4 18.5 51 63 65 2.5 2.5 3.0 366
GDB100-50C 53 75.5 90.5 14.7 20.9 25.1 36 34 31.5 1480 9.19 10.9 11.8 15 56.5 64 65.5 3.0 326
GDB125-22 95 148 180 26.4 41.1 50 24.5 22 20 1480 9.18 11.3 12.9 15 69 78 76 3.5 278
GDB125-20 110 160 200 31.1 44.4 55.6 23 20 17 1480 19.4 11.31 12.3 15 71 77 75 2.5 3.0 3.5 277
GDB125-20A 104 150 190 28.8 41.6 52.7 20 17 15 1480 8.1 9.1 10.4 11 70 77 75 2.5 3.0 3.5 264
GDB125-34 90 148 172.8 25 41.1 48 36.5 34 30 1480 13.8 18.3 19.6 22 65 75 72 3.5 358
GDB125-32 110 160 200 30.6 44.4 55.6 36 32 28 1480 15 18.3 20.5 22 72 76 74.5 2.5 3 3.5 356
GDB125-32A 100 150 190 27.8 41.6 52.7 32 28 23 1480 12.3 15.3 16.1 18.5 71 75 74 2.5 3.0 3.5 340
GDB125-32A 90 140.4 180 25 39 50 29 25 20 1480 10.3 13.01 13.8 15 69 73 71 2.5 3.0 3.5 303
GDB125-50 110 160 200 30.6 44.4 55.6 55 50 45 1480 23.2 29 34 37 71 75 74 2.5 3.0 3.5 572
GDB125-50A 100 150 190 27.8 41.6 52.7 49 45 40 1480 19.1 24.7 28.7 30 70 74 72 2.5 3.0 3.5 530
GDB125-50B 90 140 168 26.4 40.2 51.4 43 37 33 1480 15.1 19.6 21 22 70 74 72 2.5 3.0 3.5 470
Model Capacity Q Head H (m) Rotation Speed n (r/min) Break Power (KW) Motor Power (KW) Pump Efficiency η (%) Net Positive Suction Head (NPSH) r (m) Weight (kg)
(m3/h) (l/s)
GDB150-22 144 225 288 40 62.5 80 23.5 22 18.5 1480 13.2 16.6 18.6 22 70 81 78 3.2 398
GDB150-20 120 200 240 33.3 55.6 66.7 22.5 20 17.5 1480 10.8 14 14.8 18.5 70 79 78 2.5 3.0 3.5 339
GDB150-20A 112 187 224 31.1 51.9 62.2 19.5 17 15 1480 8.7 11.3 12.3 15 70 80 78 2.5 3.0 3.5 329
GDB150-20B 108 180 216 30 50 60 18 15 13 1480 7.8 9.45 10.1 11 68 77.8 75.3 2.5 3.0 3.5 316
GDB150-32G 144 240 288 40 66.6 80 34 32 28 1480 19.1 26.5 27.5 30 70 79 80 3.2 442
GDB150-32 129 216 259.2 85.8 60 72 34 32 29 1480 17.1 23.8 25.5 30 70 79 80 2.5 3.0 3.5 441
GDB150-32A 112 187 224 31.1 51.9 62.4 30 28 25 1480 13.1 18.1 19.1 22 70 79 80 2.5 3.0 3.5 385
GDB150-32B 104 173 208 28.9 48.1 57.8 25.5 24 21.8 1480 10.5 14.5 15.6 18.5 60 78 79 2.5 3.0 3.5 367
GDB150-49 144 245 300 40 68.1 83.3 55 49 44 1480 32.7 43 49.9 55 66 76 72 3.2 732
GDB150-49A 144 245 300 40 68.1 83.3 52 45 38 1480 31.4 40 43.7 45 65 75 71 3.2 648
GDB150-50 120 200 240 33.3 55.6 66.7 53 50 46 1480 27.9 36.3 40.6 45 62 75 71 2.0 2.8 3.5 645
GDB150-50A 112 187 225 31.1 51.9 62.5 47 44 40 1480 23.2 30 33.1 37 62 75 74 2.0 2.8 3.5 613
GDB150-50B 104.6 173 209 29.1 48.1 58.1 40 38 35 1480 18.7 24.4 27.4 30 61 74 73 2.0 2.8 3.5 568
GDB200-24 200 300 360 55.6 83.3 100 26 24 21 1480 17.92 24.2 25.7 30 78 81 80 2.5 3.5 4.0 492
GDB200-24A 198 280 340 55.1 77.8 94.4 20 18 15 1480 14.2 17.1 16.9 22 76 80 82 2.5 3.5 4.0 432
GDB200-24B 168 250 300 46.7 69.4 83.3 17 15 13 1480 10.4 12.9 13.3 18.5 75 79 80 2.5 3.5 4.0 414
Model Capacity Q Head H (m) Rotation Speed n (r/min) Break Power (KW) Motor Power (KW) Pump Efficiency η (%) Net Positive Suction Head (NPSH) r (m) Weight (kg)
(m3/h) (l/s)
GDB200-32 200 300 360 55.6 83.3 100 33 32 30 1480 27.56 30.12 33.37 37 76.7 81.4 78.9 2.5 3.5 4.0 625
GDB200-32A 198 280 340 55.1 77.8 94.4 29 28 24 1480 20.57 26.52 28.49 30 76 80.4 78 2.5 3.5 4.0 582
GDB200-32B 200 300 360 55.6 83.3 100 26 24 21 1480 17.92 24.2 25.7 30 78 81 80 4.0 581
GDB200-48 200 300 360 55.6 63.3 100 51 48 43 1480 35.6 47.8 52.7 55 78 82 80 2.5 3.5 4.0 818
GDB200-48A 198 280 340 55.1 77.8 94.4 45 42 37 1480 31.51 39.53 43.36 45 77 81 79 2.5 3.5 4.0 771
GDB200-48B 168 250 300 46.7 69.4 83.3 40 37 32 1480 24.07 31.48 33.51 37 76 80 78 2.5 3.5 4.0 736
GDB2S0-20 240 400 460 66.7 111 130 22.6 20 17 1480 21.1 26.7 27.3 30 70 83 79 3.6 4.6 5.0 542
GDB2S0-20A 225 374.4 431 62.5 104 120 18.5 16 14 1480 15.96 19.63 21.01 22 71 82 78 3.0 3.5 4.0 486
GDB250-24 445 630 758 123.6 175 210.6 27.5 24 19 1480 40.9 49 50.3 55 80 84 78 4.2 706
GDB250-24A 420 600 726 116.7 166.7 201.4 22 20 17 1480 31.8 39.8 43.6 45 79 82 77 4.2 972
GDB250-26 240 400 480 66.6 111.1 133.3 34 30 25 1480 31.3 40.8 44.7 45 71 80 73 4.2 788
GDB250-32 (G250-32) 240 400 480 66.7 111 130 37 32 28.5 1480 34.6 42.5 44.6 55 70 82 80 3.0 3.5 4.0 945
GDB250-32A (G250-32A) 226 374 432 62.8 104 120 33 28 25 1480 29 35 41.6 45 70 82 80 3.0 3.5 4.0 898
GDB250-32B (G250-32B) 210 350 403 58.3 97.2 112 27.5 24 21.2 1480 23.3 28.6 30 37 67.4 79 77.5 3.0 3.5 4.0 863
GDB250-38 445 630 758 123.6 175 210.5 42 38 32 1480 66.97 75.55 83.62 90 76 83 79 5.0 6.2 6.5 1228
GDB250-38A 360 600 720 100 166.6 200 39 32 26 1480 53.9 64.12 67.1 75 71 80 76 5.0 6.2 6.5 1218
Model Capacity Q Head H (m) Rotation Speed n (r/min) Break Power (KW) Motor Power (KW) Pump Efficiency η (%) Net Positive Suction Head (NPSH) r (m) Weight (kg)
(m3/h) (l/s)
GDB250-40A 258 430 516 71.67 119.4 143.3 36 32 26.5 1480 38.3 46.8 51.7 55 66 80 72 5.0 6.2 6.5 1058
GDB250-50 240 400 460 667 111 128 55 50 45 1480 48.6 67.2 74.2 90 74 81 76 3.0 3.8 4.5 1138
GDB250-50A 228 380 437 63.3 105.5 121.4 49 44.5 40 1480 41.8 57.9 63.8 75 72.7 79.5 75.5 3.0 3.8 4.5 1123
GDB250-50B 210 340 401 58.3 96.1 111.4 42 38 34 1480 32.8 45.1 48.9 55 73 80 76 3.0 3.8 4.5 1098
GDB300-15 360 500 612 100 138.9 170 18.5 15 12 1480 22.39 24.03 25.64 30 81 85 78 6.2 712
GDB300-15A 324 468 576 90 130 160 16.5 12.5 10 1480 18.66 19.43 20.64 22 78 82 76 6.2 655
GDB300-22 518 792 940 143.9 220 261 25 22 18.5 1480 47.7 57.9 62.3 75 74 82 76 6.2 1257
GDB300-17 450 750 900 150 208.3 250 20 17 14 1480 36.04 43.4 44.6 55 68 80 77 6.2 1132
GDB300-17A 375 625 750 104.2 173.6 208.3 20 17 15 1480 32.4 37.1 40.3 45 63 78 76 6.2 1045
GDB300-24 360 500 612 100 138.9 170 27 24 17 1480 33.1 38.4 38.6 45 80 85 82 6.2 905
GDB300-24A 300 500 600 83.3 138.9 166.7 22 20 17 1480 22.5 32.8 34.7 37 80 83 80 6.2 884
GDB300-25 612 800 915 170 222.2 254.2 27 25 20 1480 56.3 64.1 66.5 75 80 85 75 4.0 1250
GDB300-25A 560 750 850 155.6 208.3 236.1 23 20 17 1480 45 49.2 51.8 55 78 83 76 4.0 1225
GDB300-25G 700 900 1100 194.4 250 305.6 27 25 20 1480 164.4 72 77 90 80 85 78 5.2 1265
GDB300-25GA 700 900 1100 194.4 250 305.6 22 20 17 1480 57.5 59.1 67 75 73 83 78 5.2 1250
GDB300-32 450 750 900 125 208.3 250 35 32 28 1480 61.3 81.7 88 90 67 80 78 6.2 1316
Model Capacity Q Head H (m) Rotation Speed n (r/min) Break Power (KW) Motor Power (KW) Pump Efficiency η (%) Net Positive Suction Head (NPSH) r (m) Weight (kg)
(m3/h) (l/s)
GDB300-32A 551 720 850 153.1 200 236.1 31 26 23 1480 58.15 60.69 67.39 75 80 84 79 5.2 1301
GDB300-38F 612 800 915 170 222.2 254.2 42.5 38 32.5 1480 76.5 97.4 98.8 110 81 85 82 5.2 1610
GDB300-38FA 540 765 850 150 212.5 236.1 36 32 28 1480 66.2 79.4 83.1 90 80 84 78 5.2 1326
GDB300-38G 700 900 1100 194.4 250 305.6 42 38 33 1480 97.6 112 118 132 82 83 84 4.5 1764
GDB300-38GA 700 900 1100 194.4 250 305.6 37 32 26 1480 89.3 94.5 97.4 110 79 83 80 1715
GDB300-40 360 500 612 100 138.9 170 43.5 40 33.5 1480 56.11 65.62 70.67 75 76 83 79 6.2 1174
GDB300-40A 324 468 576 90 130 160 36.5 31.5 26 1480 41.82 49.56 51 55 77 81 80 6.2 1053
GDB300-50 445 630 758 123.6 175 210.5 53 50 46 1480 80.28 100.9 126.6 132 80 85 75 6.2 1856
GDB300-50A 420 600 725 116.6 166.6 201.3 45 42 38 1480 72.49 83.69 102.8 110 71 82 73 6.2 1807
GDB300-65 360 500 612 100 138.9 170 71 65 56 1480 92.8 108.7 129.6 132 75 79 72 6.2 1888
GDB300-65A 324 468 576 90 130 160 61 54 50 1480 76.8 89.4 98 110 74 77 75 6.2 1838
GDB350-17 750 1250 1500 208.3 347.2 416.7 21 17 12 1480 71.5 82.7 84.5 90 60 70 58 6.2 1410
GDB350-17A 600 1000 1200 166.7 277.8 333.3 21 17 14 1480 64.8 68.1 70.4 75 53 68 65 6.2 1395
GDB350-20 612 800 935 170 222.2 259.7 23 20 16 1480 47.9 50.1 51.57 55 80 87 79 4.8 1158
GDB350-20A 504 720 829 140 200 230.2 20 17 14 1480 37.6 40.6 41 45 73 82 77 4.8 1113
GDB350-26 972 1260 1440 270 351 400 32 26 22 1480 99.7 101.5 105 110 85 87 83 4.8 1810
Model Capacity Q Head H (m) Rotation Speed n (r/min) Break Power (KW) Motor Power (KW) Pump Efficiency η (%) Net Positive Suction Head (NPSH) r (m) Weight (kg)
(m3/h) (l/s)
GDB350-26A 864 1116 1296 240 310 360 26 21.5 16 1480 76.5 78.8 80 90 80 83 75 4.8 1685
GDB350-32 900 1200 1400 250 333.3 400 35 32 26 1480 115.9 134 135 160 74 78 75 6.2 1930
GDB350-32A 819 1092 1310 227.5 303.3 364 31 28 23 1480 96 109.5 112.4 132 72 76 73 6.2 1856
GDB350-32B 745 1000 1200 207 277.8 333.3 27 25 20 1480 78.3 92 92.1 110 70 74 71 6.2 1765
GDB350-44 972 1260 1476 270 350 410 50 44 37 1480 164 177.4 189 200 81 87 79 4.5 2566
GDB350-44A 864 1200 1332 240 333 370 41 36 30 1480 121 131 136 160 80 84 80 4.5 2456
GDB350-44B 900 1200 1300 250 333 361 35 30 28 1480 110 118.5 125.5 132 78 82 86 4.5 2385
GDB400-12.5 1200 1600 1900 333.3 444.4 527.8 14 12.5 10.5 980 58 64.8 67 75 78 84 81 6.5 1323
GDB400-12.5A 1092 1456 1720 303.3 404.4 480.5 12 10.5 9 980 45.7 50.1 52.3 55 78 83 80 6.5 1429
GDB400-20 1200 1600 1900 333.3 444.4 527.8 23 20 15 1480 92.8 102.5 104.8 110 81 85 74 6.5 1886
GDB400-20A 1092 1456 1720 303.3 404.4 480.2 19.5 17 13 1480 72.5 80.2 83.1 90 80 84 73 6.5 1825
GDB400-32 1200 1600 1900 333.3 444.4 527.8 35 32 26 1480 142.3 164 172.4 200 80 85 78 6.5 2360
GDB400-32A 1092 1456 1720 303.3 404.4 480.2 30 27.5 22.5 1480 112.9 129.8 137.6 160 79 84 77 6.5 2289
GDB400-32B 994 1325 1573 276 368 437.1 26 23.5 19 1480 91.1 103.4 108.5 132 77 82 75 6.5 2021
GDB500-13 1620 2020 2340 450 561.1 650 15 13 10.4 980 83.8 86.2 82.8 110 79 83 80 5.7 2650
GDB500-22 1620 2020 2340 450 561.1 650 24.5 22 19.4 980 140.4 144.1 145.4 160 77 84 85 5.7 3652
GDB500-22A 1400 1746 2020 389 485 561.1 20 17 15 980 103 101 105.8 132 74 80 78 5.7 3586
GDB500-27 1620 2020 2340 450 561.1 650 31 27 21 980 166.8 174.7 183.3 200 82 85 73 5.7 4122
Outline and installation dimensions
Outline and installation dimensions
Model Outline dimensions Flange size
h H L B φd1 E F G φD1 φD b n-d
GDB32-5 80 418 95 95 10 140 280 270 100 140 18 4-18
GDB32-8 100 440 140 140 10 160 320 270 100 140 18 4-18
GDB32-12.5 100 471 140 140 10 180 360 300 100 140 18 4-18
GDB32-20 105 513 220 190 14 241 482 315 100 140 18 4-18
GDB32-20A 105 488 220 190 14 241 482 315 100 140 18 4-18
GDB40-5 120 410 195 140 14 150 31 270 110 150 18 4-18
GDB40-8 125 485 195 140 14 160 340 300 110 150 18 4-18
GDB40-12.5 110 488 200 170 14 190 380 345 110 150 18 4-18
GDB40-12.5A 110 476 200 170 14 190 380 345 110 150 18 4-18
GDB40-20 105 540 220 190 14 225 450 350 110 150 18 4-18
GDB40-20A 105 505 220 190 14 225 450 350 110 150 18 4-18
GDB40-30(A) 110 550 260 220 14 250 510 410 110 150 18 4-18
GDB50-8(A) 105 480(460) 200 170 14 210 400 310 125 165 20 4-18
GDB50-12.5 115 512 200 170 14 180 390 350 125 165 20 4-18
GDB50-12.5A 115 487 200 170 14 180 390 350 125 165 20 4-18
GDB50-17 105 540 220 190 14 225 450 410 125 165 20 4-18
GDB50-20 105 540 220 190 14 225 450 410 125 165 20 4-18
GDB50-30 110 575 220 190 14 250 510 410 125 165 20 4-18
GDB50-30A 110 555 220 190 14 250 510 410 125 165 20 4-18
GDB65-8 125 535 200 170 14 200 400 300 145 185 20 4-18
GDB65-12 120 565 220 190 14 225 450 320 145 185 20 4-18
GDB65-12A 120 505 220 190 14 225 450 320 145 185 20 4-18
GDB65-20 120 565 200 170 14 270 540 315 145 185 20 4-18
GDB65-20A 120 565 200 170 14 270 540 315 145 185 20 4-18
GDB65-32 135 665 280 230 14 290 590 420 145 185 20 4-18
GDB65-32A 135 665 280 230 14 290 590 420 145 185 20 4-18
GDB65-32B 135 600 280 230 14 290 590 420 145 185 20 4-18
GDB80-8 160 630 210 180 18 220 460 360 160 200 22 8-18
Model Outline dimensions Flange size
h H L B φd1 E F G φd1 φD b n-d
GDB80-12(A) 135 600(580) 220 190 14 240 480 350 160 200 22 8-18
GDB80-20 130 660 255 215 14 250 515 410 160 200 22 8-18
GDB80-20A 130 595 255 215 14 250 515 410 160 200 22 8-18
GDB80-20B 130 575 255 215 14 250 515 410 160 200 22 8-18
GDB80-32 155 815 280 240 14 280 565 480 160 200 22 8-18
GDB80-32A 155 725 280 240 14 280 565 480 160 200 22 8-18
GDB80-32B 155 685 280 240 14 280 565 480 160 200 22 8-18
GDB100-12 170 700 270 230 14 280 565 410 180 220 24 8-18
GDB100-12A(B) 170 655 270 230 14 280 565 410 180 220 24 8-18
GDB100-15 140 710 300 260 14 280 580 420 180 220 24 8-18
GDB100-19 140 710 300 260 14 280 580 420 180 220 24 8-18
GDB100-19A 140 670 300 260 14 280 580 420 180 220 24 8-18
GDB100-21 140 670 300 260 14 280 580 420 180 220 24 8-18
GDB100-22 140 785 300 260 14 280 580 430 180 220 24 8-18
GDB100-32(A) 155 860(815) 300 260 14 315 650 500 180 220 24 8-18
GDB100-32B 155 730 300 260 14 315 650 500 180 220 24 8-18
GDB100-50(A) 200 1050 300 260 14 360 720 580 180 220 24 8-18
GDB100-50B(C) 200 985 300 260 14 360 720 580 180 220 24 8-18
GDB125-20(A) 190 896(851) 280 240 18 330 690 520 210 250 26 8-18
GDB125-32(A/B) 200 985 280 240 18 360 760 560 210 250 26 8-18
GDB125-34 200 945 280 240 18 360 760 560 210 250 26 8-18
GDB125-50 210 1064 360 300 22 365 780 660 210 250 26 8-18
GDB125-50(A/B) 210 1064(1049/984) 360 300 22 365 780 660 210 250 26 8-18
GDB150-20 205 1042 280 240 18 355 715 550 240 285 28 8-23
GDB150-20A(B) 205 912(867) 280 240 18 355 715 550 240 285 28 8-23
GDB150-22 205 1082 280 240 18 355 715 550 240 285 28 8-23
GDB150-32G 204 1049 380 300 20 355 735 600 240 285 28 8-23
GDB150-32 204 1049 380 300 20 355 735 600 240 285 28 8-23
GDB150-32A(B) 204 1044 380 300 20 355 735 600 240 285 28 8-23
GDB150-49 210 1784 380 300 20 400 850 650 240 285 28 8-23
GDB150-49A 210 1699 380 300 20 400 850 650 240 285 28 8-23
GDB150-50 210 1699 380 300 20 400 850 650 240 285 28 8-23
GDB150-50(A/B) 210 1574(1659) 380 300 20 400 850 650 240 285 28 8-23
GDB200-24 230 1125 400 320 24 380 800 590 295 340 30 12-23
GDB200-24A(B) 230 1080(1050) 400 320 24 380 800 590 295 340 30 12-23
GDB200-32 245 1205 400 320 24 400 850 700 295 340 30 12-23
GDB200-32A(B) 245 1065 400 320 24 400 850 730 295 340 30 12-23
GDB200-48 260 1726 450 360 27 500 950 730 295 340 30 12-23
GDB200-48A(B) 260 1135 450 360 27 500 950 730 295 340 30 12-23
GDB250-20(A) 280 1060 380 300 27 450 900 610 355 405 32 12-23
Model Outline dimensions Flange size
h H L B φd1 E F G φd1 φD b n-d
GDB250-24(A) 260 1626(1620) 450 300 27 500 950 630 355 405 32 12-23
GDB250-26 260 1426 450 360 27 500 95 630 355 405 32 12-23
GDB250-32 260 1680 450 360 27 500 950 680 355 405 32 12-23
GDB250-32A(B) 260 1600(1575) 450 360 27 500 950 680 355 405 32 12-23
GDB250-38(A) 265 1705 480 400 24 550 1100 750 355 405 32 12-23
GDB250-40A 360 1608 510 450 24 500 1100 665 355 405 32 12-23
GDB250-50 290 1863 450 360 27 470 1020 760 355 405 32 12-23
GDB250-50A(B) 290 1813(1743) 450 360 27 470 1020 760 355 405 32 12-23
GDB300-15(A) 310 1160(1095) 500 400 27 500 1050 670 410 460 34 12-26
GDB300-17(A) 290 1610(1580) 500 400 27 500 1100 665 410 460 34 12-28
GDB300-22 310 1610 500 400 27 500 1100 690 410 460 34 12-28
GDB300-24(A) 310 1600(1575) 500 400 27 500 1050 690 410 460 34 12-28
GDB300-32(A) 255 1800 520 440 27 500 1000 710 410 460 34 12-28
GDB300-38F 280 2240 560 500 27 550 1100 730 410 460 34 12-28
GDB300-38FA 280 2070 560 500 27 550 1100 730 410 460 34 12-28
GDB300-38G 280 2270 560 500 27 550 1100 730 410 460 34 12-28
GDB300-38GA 280 2240 560 500 27 550 1100 730 410 460 34 12-28
GDB300-40 360 1676 520 450 25 500 1100 750 410 460 34 12-28
GDB300-40A 360 1606 520 450 25 500 1100 750 410 460 34 12-28
GDB300-50 265 2145 560 500 27 600 1200 940 410 460 34 12-28
GDB300-50A 265 2095 560 500 27 600 1200 940 410 460 34 12-28
GDB300-65 265 2145 560 500 27 600 1200 940 410 460 34 12-28
GDB300-65A 260 2095 560 500 27 600 1200 940 410 460 34 12-28
GDB350-17 320 1835 510 460 27 750 1500 730 470 520 36 16-28
GDB350-17A 320 1835 510 460 27 750 1500 730 470 520 36 16-28
GDB350-20(A) 290 1855(1770) 450 400 27 500 1100 760 470 520 36 16-28
GDB350-32 290 1950 560 500 27 550 1100 780 470 520 36 16-28
GDB350-32A(B) 290 1770(1750) 560 500 27 550 1100 780 470 520 36 16-28
GDB350-44 320 2280 510 460 27 600 1200 940 470 520 36 16-28
GDB350-44A(B) 320 2235 51 460 27 600 1200 940 470 520 36 16-28
GDB400-14.5 320 2255(1835) 580 500 32 800 1600 956 515 565 34 16-28
GDB400-20(A) 320 2155 580 500 32 800 1600 996 515 565 34 16-28
GDB400-32 320 2335 580 500 32 800 1600 1115 515 565 34 16-28
GDB400-32A(B) 320 2335(2155) 580 500 32 800 1600 1115 515 565 34 16-28
GDB500-13 400 2235 1180 1060 40 775 1550 976 620 670 34 20-28
GDB500-22(A) 400 2550 1180 1060 40 775 1550 1000 620 670 34 20-28
GDB500-27 400 2850 1180 1060 40 775 1550 1000 620 670 34 20-28
Cooling Tower Pumps