Vertical Centrifugal Pump, GDB Type Cooling Tower Pump

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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.
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

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

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)
Model	(m3/h)	(l/s)	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)
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)
Model	(m3/h)	(l/s)	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)
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)
Model	(m3/h)	(l/s)	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)
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)
Model	(m3/h)	(l/s)	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)
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)
Model	(m3/h)	(l/s)	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)
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)
Model	(m3/h)	(l/s)	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)
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)
Model	(m3/h)	(l/s)	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)
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)
Model	(m3/h)	(l/s)	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)
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)
Model	(m3/h)	(l/s)	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)
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

Model	Outline dimensions								Flange size
Model	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
Model	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
Model	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

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