Product Description
Model Meaning
Product Overview and Applications
The D series horizontal single-suction multistage clean water centrifugal pump features high efficiency, a wide performance range, stable and safe operation, low noise, long service life, and convenient installation and maintenance. It is suitable for delivering clean water or other liquids with physical and chemical properties similar to clean water. By changing the material of the flow-passage components, sealing structure, and adding a cooling system, it can also be used for hot water, oils, corrosive liquids, or media containing small abrasive particles.
This product complies with the JB/T1051-93 “Types and Basic Parameters for Multistage Clean Water Centrifugal Pumps” standard.
The D series horizontal multistage centrifugal pump is fully designed and optimized using computer technology. With strong technical capability, extensive manufacturing experience, and complete testing methods, the product quality is ensured to be stable and reliable.
The D series pump is mainly used for industrial and municipal water supply and drainage, high-rise building pressure boosting, garden irrigation, fire-fighting booster systems, long-distance water transportation, heating systems, hot and cold-water circulation for bathing facilities, and equipment supporting systems. It is especially suitable for small boiler feed applications.
Product Features
The D series horizontal single-suction multistage centrifugal pump adopts a horizontal, multistage sectional structure and uses nationally recommended high-efficiency hydraulic models. It offers the advantages of high efficiency, wide performance range, stable and safe operation, low noise, long service life, and convenient maintenance.
It is suitable for transporting clean water without solid particles or suspended matter, as well as other liquids with physical and chemical characteristics similar to clean water. By changing the pump material (or flow-passage material), sealing form, and adding a cooling system, it can also handle hot water, oils, corrosive liquids, or abrasive media.
The allowable inlet pressure is less than 0.6 MPa.
1. Advanced hydraulic model with high efficiency and a wide performance range.
2. Stable pump operation with low noise.
3. Shaft seal adopts soft packing seal or mechanical seal, ensuring safe and reliable sealing, simple structure, and easy maintenance.
4. The shaft is fully enclosed, avoiding contact with the medium, ensuring no corrosion and a long service life.
Structure Description
The D series horizontal single-suction multistage centrifugal pump is of multistage sectional type. The suction inlet is located on the suction section and arranged horizontally, while the discharge outlet is vertically upward on the discharge section. The required head can be adjusted by increasing or reducing the number of pump stages. Pump assembly quality has a great impact on performance, especially the alignment between the impeller outlet and diffuser inlet. Even slight misalignment will reduce flow rate, decrease head, and lower efficiency; therefore, careful attention is required during maintenance and reassembly.
Main components of the D series pump include: suction section, middle section, discharge section, impeller, diffuser baffle, discharge diffuser, shaft, sealing ring, balance ring, shaft sleeve, tail cover, and bearing housing.
The suction section, middle section, diffuser baffle, discharge diffuser, discharge section, and tail cover are all made of cast iron, forming the pump’s working chamber.
The impeller is made of high-quality cast iron with internal blades. Liquid enters axially from one side. Due to pressure differences on the impeller’s front and back, axial force is generated and is borne by the balance plate. Each impeller undergoes static balance testing during manufacturing.
The shaft is made of high-quality carbon steel. Impellers are installed in the middle and fixed with keys, shaft sleeves, and sleeve nuts. One end of the shaft is equipped with a coupling assembly for direct connection to the motor.
The sealing ring is made of cast iron and prevents high-pressure water inside the pump from flowing back into the suction section. It is installed on the suction and middle sections and is a wear part that should be replaced when worn.
The balance ring is made of cast iron and installed on the discharge section. Together with the balance plate, it forms the balancing device.
The balance plate is made of wear-resistant cast iron, installed on the shaft between the discharge section and the tail cover to balance axial force.
The shaft sleeve is made of cast iron and located at the stuffing-box area, serving to secure the impeller and protect the pump shaft. It is a wear part and can be replaced when necessary.
The bearing is a single-row deep-groove ball bearing lubricated with calcium-based grease.
The packing provides sealing to prevent air from entering and excessive liquid leakage. The packing seal consists of stuffing chambers on the suction section and tail cover, packing gland, packing ring, and packing material. A small amount of high-pressure water enters the stuffing chamber to form a water seal. The packing tightness must be properly adjusted—not too tight or too loose—allowing leakage to drip slowly. If too tight, the shaft sleeve overheats and wastes power; if too loose, leakage reduces pump efficiency.
Structure Diagram
|
1
|
Bearing Cover
|
2
|
Nut
|
3
|
Bearing
|
4
|
Water Baffle Sleeve
|
5
|
Bearing Bracket
|
6
|
Front Shaft Sleeve
|
7
|
Packing Gland
|
8
|
Packing Ring
|
|
9
|
Suction Section
|
10
|
Intermediate Sleeve
|
11
|
Seal Ring
|
12
|
Impeller
|
13
|
Middle Section
|
14
|
Diffuser Baffle
|
15
|
Diffuser Sleeve
|
16
|
Tightening Bolt
|
|
17
|
Discharge Diffuser
|
18
|
Balance Ring
|
19
|
Balance Ring
|
20
|
Balance Plate
|
21
|
Discharge Section
|
22
|
Tail Cover
|
23
|
Shaft
|
24
|
Rear Shaft Sleeve
|
Performance Parameters and Installation Dimensions
| Model |
Stages
|
Flow (Q)
|
Head (m)
|
Speed (r/min)
|
Power (kW)
|
NPSHr (m)
|
Efficiency η (%)
|
||
|
m³/h
|
L/s
|
Shaft Power
|
Motor Power
|
||||||
|
50D8×2
|
2
|
18
|
5
|
19
|
2950
|
1.5
|
2.2
|
2.3
|
62
|
|
50D8×3
|
3
|
18
|
5
|
28.5
|
2950
|
2.25
|
3
|
2.3
|
62
|
|
50D8×4
|
4
|
18
|
5
|
38
|
2950
|
3
|
4
|
2.3
|
62
|
|
50D8×5
|
5
|
18
|
5
|
47.5
|
2950
|
3.75
|
5.5
|
2.3
|
62
|
|
50D8×6
|
6
|
18
|
5
|
57
|
2950
|
4.5
|
5.5
|
2.3
|
62
|
|
50D8×7
|
7
|
18
|
5
|
66.5
|
2950
|
5.25
|
7.5
|
2.3
|
62
|
|
50D8×8
|
8
|
18
|
5
|
76
|
2950
|
6
|
7.5
|
2.3
|
62
|
|
50D8×9
|
9
|
18
|
5
|
85.5
|
2950
|
6.75
|
7.5
|
2.3
|
62
|
|
50D8×10
|
10
|
18
|
5
|
95
|
2950
|
7.5
|
11
|
2.3
|
62
|
|
50D8×11
|
11
|
18
|
5
|
104.5
|
2950
|
8.25
|
11
|
2.3
|
62
|
|
50D8×12
|
12
|
18
|
5
|
114
|
2950
|
9
|
11
|
2.3
|
62
|
| Model |
Stages
|
Flow (Q)
|
Head (m)
|
Speed (r/min)
|
Power (kW)
|
NPSHr (m)
|
Efficiency η (%)
|
||
|
m³/h
|
L/s
|
Shaft Power
|
Motor Power
|
||||||
|
80D12×2
|
2
|
32.4
|
9
|
22.7
|
2950
|
2.68
|
3
|
2.8
|
75
|
|
80D12×3
|
3
|
32.4
|
9
|
34.05
|
2950
|
4.02
|
5.5
|
2.8
|
75
|
|
80D12×4
|
4
|
32.4
|
9
|
45.4
|
2950
|
5.36
|
7.5
|
2.8
|
75
|
|
80D12×5
|
5
|
32.4
|
9
|
56.75
|
2950
|
6.7
|
7.5
|
2.8
|
75
|
|
80D12×6
|
6
|
32.4
|
9
|
68.1
|
2950
|
8.04
|
11
|
2.8
|
75
|
|
80D12×7
|
7
|
32.4
|
9
|
79.45
|
2950
|
9.38
|
11
|
2.8
|
75
|
|
80D12×8
|
8
|
32.4
|
9
|
90.8
|
2950
|
10.72
|
15
|
2.8
|
75
|
|
80D12×9
|
9
|
32.4
|
9
|
102.15
|
2950
|
11.06
|
15
|
2.8
|
75
|
|
80D12×10
|
10
|
32.4
|
9
|
113.5
|
2950
|
13.4
|
15
|
2.8
|
75
|
|
80D12×11
|
11
|
32.4
|
9
|
124.85
|
2950
|
14.74
|
18.5
|
2.8
|
75
|
|
80D12×12
|
12
|
32.4
|
9
|
136.2
|
2950
|
16.08
|
18.5
|
2.8
|
75
|
| Model |
Stages
|
Flow (Q)
|
Head (m)
|
Speed (r/min)
|
Power (kW)
|
NPSHr (m)
|
Efficiency η (%)
|
||
|
m³/h
|
L/s
|
Shaft Power
|
Motor Power
|
||||||
|
100D16×2
|
2
|
54
|
15
|
35.2
|
2950
|
7.2
|
11
|
3.3
|
71.5
|
|
100D16×3
|
3
|
54
|
15
|
52.8
|
2950
|
10.8
|
15
|
3.3
|
71.5
|
|
100D16×4
|
4
|
54
|
15
|
70.4
|
2950
|
14.4
|
18.5
|
3.3
|
71.5
|
|
100D16×5
|
5
|
54
|
15
|
88
|
2950
|
18
|
22
|
3.3
|
71.5
|
|
100D16×6
|
6
|
54
|
15
|
105.6
|
2950
|
21.6
|
30
|
3.3
|
71.5
|
|
100D16×7
|
7
|
54
|
15
|
123.2
|
2950
|
25.2
|
30
|
3.3
|
71.5
|
|
100D16×8
|
8
|
54
|
15
|
140.8
|
2950
|
28.8
|
37
|
3.3
|
71.5
|
|
100D16×9
|
9
|
54
|
15
|
158.4
|
2950
|
32.4
|
37
|
3.3
|
71.5
|
|
100D16×10
|
10
|
54
|
15
|
176
|
2950
|
36
|
45
|
3.3
|
71.5
|
|
100D16×11
|
11
|
54
|
15
|
198.6
|
2950
|
39.6
|
55
|
3.3
|
71.5
|
|
100D16×12
|
12
|
54
|
15
|
211.2
|
2950
|
43.2
|
55
|
3.3
|
71.5
|
| Model |
Stages
|
Flow (Q)
|
Head (m)
|
Speed (r/min)
|
Power (kW)
|
NPSHr (m)
|
Efficiency η (%)
|
||
|
m³/h
|
L/s
|
Shaft Power
|
Motor Power
|
||||||
|
125D25×2
|
2
|
108
|
30
|
40
|
2950
|
15.6
|
18.5
|
4
|
76
|
|
125D25×3
|
3
|
108
|
30
|
60
|
2950
|
23.4
|
30
|
4
|
76
|
|
125D25×4
|
4
|
108
|
30
|
80
|
2950
|
31.2
|
37
|
4
|
76
|
|
125D25×5
|
5
|
108
|
30
|
100
|
2950
|
39
|
45
|
4
|
76
|
|
125D25×6
|
6
|
108
|
30
|
120
|
2950
|
46.8
|
55
|
4
|
76
|
|
125D25×7
|
7
|
108
|
30
|
140
|
2950
|
54.6
|
75
|
4
|
76
|
|
125D25×8
|
8
|
108
|
30
|
160
|
2950
|
62.4
|
75
|
4
|
76
|
|
125D25×9
|
9
|
108
|
30
|
180
|
2950
|
70.3
|
90
|
4
|
76
|
|
125D25×10
|
10
|
108
|
30
|
200
|
2950
|
78
|
90
|
4
|
76
|
| Model |
Stages
|
Flow (Q)
|
Head (m)
|
Speed (r/min)
|
Power (kW)
|
NPSHr (m)
|
Efficiency η (%)
|
||
|
m³/h
|
L/s
|
Shaft Power
|
Motor Power
|
||||||
|
150D30×2
|
2
|
162
|
45
|
54.6
|
2950
|
31.46
|
37
|
4.1
|
76.6
|
|
150D30×3
|
3
|
162
|
45
|
81.9
|
2950
|
47.19
|
55
|
4.1
|
76.6
|
|
150D30×4
|
4
|
162
|
45
|
109.2
|
2950
|
62.92
|
75
|
4.1
|
76.6
|
|
150D30×5
|
5
|
162
|
45
|
136.5
|
2950
|
78.65
|
90
|
4.1
|
76.6
|
|
150D30×6
|
6
|
162
|
45
|
163.8
|
2950
|
94.38
|
110
|
4.1
|
76.6
|
|
150D30×7
|
7
|
162
|
45
|
191.1
|
2950
|
110.11
|
132
|
4.1
|
76.6
|
|
150D30×8
|
8
|
162
|
45
|
218.4
|
2950
|
125.84
|
160
|
4.1
|
76.6
|
|
150D30×9
|
9
|
162
|
45
|
245.7
|
2950
|
141.57
|
160
|
4.1
|
76.6
|
Installation Dimensions
|
Model
|
Stages
|
L
|
L1
|
L2
|
L3
|
L4
|
L5
|
B
|
B1
|
H
|
H1
|
H2
|
H3
|
H4
|
n-φd
|
|
50D8×2
|
2
|
960
|
65
|
490
|
730
|
135
|
345
|
355
|
290
|
230
|
160
|
90
|
100
|
25
|
4-φ20
|
|
50D8×3
|
3
|
1163
|
113
|
550
|
815
|
145
|
390
|
360
|
300
|
240
|
160
|
100
|
145
|
25
|
4-φ20
|
|
50D8×4
|
4
|
1141
|
136
|
580
|
890
|
180
|
410
|
360
|
340
|
242
|
160
|
112
|
153
|
25
|
4-φ20
|
|
50D8×5
|
5
|
1274
|
226
|
710
|
1120
|
270
|
485
|
370
|
370
|
242
|
160
|
132
|
183
|
25
|
4-φ20
|
|
50D8×6
|
6
|
1332
|
226
|
710
|
1120
|
270
|
485
|
370
|
370
|
242
|
160
|
132
|
183
|
25
|
4-φ20
|
|
50D8×7
|
7
|
1390
|
226
|
710
|
1120
|
270
|
485
|
370
|
370
|
242
|
160
|
132
|
183
|
25
|
4-φ20
|
|
50D8×8
|
8
|
1448
|
310
|
770
|
1230
|
300
|
485
|
370
|
370
|
242
|
160
|
132
|
183
|
25
|
4-φ20
|
|
50D8×9
|
9
|
1508
|
310
|
770
|
1230
|
300
|
485
|
370
|
370
|
242
|
160
|
132
|
183
|
25
|
4-φ20
|
|
50D8×10
|
10
|
1689
|
362
|
949
|
1515
|
420
|
610
|
370
|
405
|
255
|
160
|
160
|
225
|
25
|
4-φ20
|
|
50D8×11
|
11
|
1747
|
362
|
940
|
1515
|
420
|
610
|
370
|
405
|
255
|
160
|
160
|
225
|
25
|
4-φ20
|
|
50D8×12
|
12
|
1805
|
362
|
940
|
1515
|
420
|
610
|
370
|
405
|
255
|
160
|
160
|
225
|
25
|
4-φ20
|
|
Model
|
Stages
|
L
|
L1
|
L2
|
L3
|
L4
|
L5
|
B
|
B1
|
H
|
H1
|
H2
|
H3
|
H4
|
n-φd
|
|
80D12×2
|
2
|
1139
|
121
|
610
|
860
|
130
|
390
|
410
|
300
|
245
|
210
|
100
|
145
|
25
|
4-φ20
|
|
80D12×3
|
3
|
1304
|
232
|
770
|
1130
|
235
|
485
|
410
|
365
|
247
|
210
|
132
|
183
|
25
|
4-φ20
|
|
80D12×4
|
4
|
1374
|
232
|
770
|
1130
|
235
|
485
|
410
|
365
|
247
|
210
|
132
|
183
|
25
|
4-φ20
|
|
80D12×5
|
5
|
1444
|
232
|
770
|
1130
|
235
|
485
|
410
|
365
|
247
|
210
|
132
|
183
|
25
|
4-φ20
|
|
80D12×6
|
6
|
1639
|
273
|
990
|
1385
|
230
|
610
|
410
|
410
|
260
|
210
|
160
|
225
|
25
|
4-φ20
|
|
80D12×7
|
7
|
1709
|
273
|
990
|
3185
|
230
|
610
|
410
|
410
|
260
|
210
|
160
|
225
|
25
|
4-φ20
|
|
80D12×8
|
8
|
1779
|
403
|
1020
|
1600
|
415
|
610
|
410
|
410
|
260
|
210
|
160
|
225
|
25
|
4-φ20
|
|
80D12×9
|
9
|
1849
|
403
|
1020
|
1600
|
415
|
610
|
410
|
410
|
260
|
210
|
160
|
225
|
25
|
4-φ20
|
|
80D12×10
|
10
|
1919
|
403
|
1020
|
1600
|
415
|
610
|
410
|
410
|
260
|
210
|
160
|
225
|
25
|
4-φ20
|
|
80D12×11
|
11
|
2034
|
471
|
1110
|
1775
|
480
|
655
|
410
|
410
|
260
|
210
|
160
|
225
|
25
|
4-φ20
|
|
80D12×12
|
2104
|
471
|
1110
|
1775
|
480
|
655
|
410
|
410
|
260
|
210
|
160
|
225
|
25
|
4-φ20
|
|
|
Model
|
Stages
|
L
|
L1
|
L2
|
L3
|
L4
|
L5
|
B
|
B1
|
H
|
H1
|
H2
|
H3
|
H4
|
n-φd
|
|
100D16×2
|
2
|
1395
|
131
|
785
|
1175
|
225
|
615
|
450
|
450
|
280
|
220
|
160
|
225
|
30
|
4-φ20
|
|
100D16×3
|
3
|
1475
|
131
|
785
|
1175
|
225
|
615
|
450
|
450
|
280
|
220
|
160
|
225
|
30
|
4-φ20
|
|
100D16×4
|
4
|
1600
|
191
|
865
|
1300
|
245
|
660
|
450
|
450
|
280
|
220
|
160
|
225
|
30
|
4-φ20
|
|
100D16×5
|
5
|
1705
|
231
|
910
|
1380
|
285
|
695
|
450
|
450
|
300
|
220
|
180
|
250
|
30
|
4-φ20
|
|
100D16×6
|
6
|
1890
|
292
|
1015
|
1620
|
385
|
790
|
485
|
485
|
310
|
220
|
200
|
275
|
35
|
4-φ20
|
|
100D16×7
|
7
|
1970
|
292
|
1015
|
1620
|
385
|
790
|
485
|
485
|
310
|
220
|
200
|
275
|
35
|
4-φ20
|
|
100D16×8
|
8
|
2050
|
372
|
1095
|
1780
|
465
|
790
|
485
|
485
|
310
|
220
|
200
|
275
|
35
|
4-φ20
|
|
100D16×9
|
9
|
2130
|
372
|
1095
|
1780
|
465
|
790
|
485
|
485
|
310
|
220
|
200
|
275
|
35
|
4-φ20
|
|
100D16×10
|
10
|
2250
|
433
|
1175
|
1885
|
485
|
830
|
450
|
515
|
335
|
220
|
225
|
305
|
35
|
4-φ20
|
|
100D16×11
|
11
|
2445
|
491
|
1325
|
2150
|
590
|
945
|
455
|
580
|
360
|
220
|
250
|
325
|
35
|
4-φ20
|
|
100D16×12
|
12
|
2525
|
491
|
1325
|
2150
|
590
|
945
|
455
|
580
|
360
|
220
|
250
|
325
|
35
|
4-φ20
|
|
Model
|
Stages
|
L
|
L1
|
L2
|
L3
|
L4
|
L5
|
B
|
B1
|
H
|
H1
|
H2
|
H3
|
H4
|
n-φd
|
|
125D25×2
|
2
|
1619
|
151
|
855
|
1230
|
185
|
660
|
530
|
420
|
330
|
270
|
160
|
225
|
40
|
4-φ24
|
|
125D25×3
|
3
|
1849
|
225.5
|
980
|
1510
|
310
|
790
|
530
|
485
|
330
|
270
|
200
|
275
|
40
|
4-φ24
|
|
125D25×4
|
4
|
1949
|
225.5
|
980
|
1510
|
310
|
790
|
530
|
485
|
330
|
270
|
200
|
275
|
40
|
4-φ24
|
|
125D25×5
|
5
|
2089
|
300
|
1075
|
1635
|
335
|
830
|
540
|
540
|
345
|
270
|
225
|
305
|
40
|
4-φ24
|
|
125D25×6
|
6
|
2304
|
351.5
|
1190
|
1835
|
385
|
945
|
540
|
590
|
370
|
270
|
250
|
325
|
40
|
4-φ24
|
|
125D25×7
|
7
|
2486
|
627
|
1510
|
2115
|
310
|
1018
|
540
|
640
|
400
|
270
|
280
|
360
|
40
|
4-φ24
|
|
125D25×8
|
8
|
2586
|
627
|
1510
|
2115
|
310
|
1018
|
540
|
640
|
400
|
270
|
280
|
360
|
40
|
4-φ24
|
|
125D25×9
|
9
|
2736
|
779
|
1680
|
2370
|
360
|
1068
|
540
|
640
|
400
|
270
|
280
|
360
|
40
|
4-φ24
|
|
125D25×10
|
10
|
2836
|
779
|
1680
|
2370
|
360
|
1068
|
540
|
640
|
400
|
270
|
280
|
360
|
40
|
4-φ24
|
|
Model
|
Stages
|
L
|
L1
|
L2
|
L3
|
L4
|
L5
|
B
|
B1
|
H
|
H1
|
H2
|
H3
|
H4
|
n-φd
|
|
150D30×2
|
2
|
1859
|
193
|
975
|
1410
|
205
|
793
|
600
|
500
|
380
|
320
|
200
|
275
|
45
|
4-φ24
|
|
150D30×3
|
3
|
2129
|
249
|
1120
|
1650
|
265
|
948
|
600
|
600
|
380
|
320
|
250
|
325
|
45
|
4-φ24
|
|
150D30×4
|
4
|
2314
|
306
|
1210
|
1835
|
325
|
1018
|
600
|
650
|
390
|
320
|
280
|
360
|
45
|
4-φ24
|
|
150D30×5
|
5
|
2479
|
365
|
1290
|
2000
|
380
|
1068
|
600
|
650
|
400
|
320
|
280
|
360
|
45
|
4-φ24
|
|
150D30×6
|
6
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
|
150D30×7
|
7
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
|
150D30×8
|
8
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
|
150D30×9
|
9
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
/
|
Suction & Discharge Flanges
 |
Dimensions
|
Suction Flange
|
Discharge Flange
|
||||||
|
Model
|
Dg
|
Do
|
D
|
n-do
|
Dg
|
Do
|
D
|
n-do
|
|
|
50D8
|
75
|
150
|
185
|
4-φ18
|
50
|
125
|
160
|
4-φ18
|
|
|
80D12
|
80
|
150
|
185
|
4-φ18
|
80
|
160
|
195
|
4-φ18
|
|
|
100D16
|
100
|
170
|
205
|
4-φ18
|
100
|
180
|
215
|
8-φ18
|
|
|
125D25
|
125
|
200
|
235
|
8-φ18
|
125
|
210
|
245
|
8-φ18
|
|
|
150D30
|
150
|
225
|
260
|
8-φ18
|
150
|
240
|
280
|
8-φ18
|
|
Pump Head H Calculation:
In the formula:
P1: Pump inlet pressure (MPa)
P2: Pump outlet pressure (MPa)
Z1: Vertical distance from the inlet pressure gauge to the pump shaft center (m)
Z2: Vertical distance from the outlet pressure gauge to the pump shaft center (m)
V1: Flow velocity at the inlet pressure measuring point (m/s)
V2: Flow velocity at the outlet pressure measuring point (m/s)
ρ: Liquid density (kg/m³)
g: Gravitational acceleration (9.8 m/s²)
Pump Installation Height Hg Calculation (installation height refers to the vertical distance from the pump shaft centerline to the liquid level at the pump inlet)
Hg ≤ P0 − [NPSH] − P’ − △h − 0.5 (m)
In the formula:
P0
: Atmospheric pressure (or absolute pressure at the suction liquid level) (m water column)
[NPSH]: Pump’s required net positive suction head (m)
P’: Vapor pressure of the liquid being pumped (m water column)
△h: Hydraulic loss in the suction pipeline (m)
Note: When Hg is positive, the pump shaft centerline is above the liquid level; when negative, the pump operates under flooded suction conditions.
The actual values of pump flow rate (Q), head (H), and shaft power (N) depend on the actual operating speed of the pump.
They are calculated using the formulas below:
OEM & Custom Solutions
Chaodun Pump provides OEM and ODM customization for D series horizontal multistage centrifugal pumps. Options include stainless-steel or cast-iron materials, mechanical seal types, and customized nameplates, packaging, and color design for global distributors.
FAQs for Oversea Buyers
1. What type of liquid can the D pump handle?
The pump is suitable for clean water and liquids with similar properties, and can be customized for hot water or light oils.
2. Can this pump be used as a boiler feed pump?
Yes, the D series is ideal for small and medium boiler feed systems.
3. What are the available materials?
Standard cast iron, optional stainless steel for corrosion resistance.
4. Does Chaodun Pump offer OEM customization?
Yes, including logo, color, and nameplate customization for export clients.
5. What is the standard warranty?
12 months from shipment; extended warranty available.
6. How is the pump packaged for export?
Each pump is packed in a fumigation-free wooden case suitable for sea transport.
7. Can sample orders be placed for testing?
Yes, samples are available, and sample costs can be deducted from bulk orders.