Product Description
Series Type Designation
Product Overview and Applications
GDL vertical multistage pipeline clean water pump is designed and manufactured with reference to advanced foreign technologies. The impeller, guide vane and diffuser casing are made of stainless steel plates through stamping, stretching and welding. The pump adopts hard alloy mechanical seals and guide bearings. It features compact size, light weight, high efficiency, energy-saving performance, low vibration and noise, smooth operation, long service life, vertical installation, small footprint, lightweight structure and attractive appearance, making it an ideal upgraded product.
GDL vertical multistage pipeline clean water pump is especially suitable for boiler feed water and can also be widely used in pressure vessel water supply, hot water circulation, high-rise building water supply, farmland irrigation, fire-fighting booster systems, hydraulic washing, food, brewing, pharmaceutical, chemical, aquaculture, environmental protection, chemical process lines and machine tool supporting systems as a power device for water supply and drainage.
Product Features
1. GDL vertical multistage pipeline clean water pump adopts a vertical structure with a small footprint. The pump’s center of gravity aligns with the pump base, ensuring stable operation, low vibration and long service life.
2. The inlet and outlet diameters of the GDL pump are the same and positioned on the same horizontal centerline, allowing installation at any position in the pipeline without modifying the pipeline layout, ensuring extremely convenient installation.
3. The motor can be equipped with a rainproof cover for direct outdoor installation, eliminating the need to build a pump room and significantly reducing infrastructure costs.
4. The pump head can be adjusted to different requirements by changing the number of stages (number of impellers), making the pump widely adaptable.
5. The shaft seal adopts a hard alloy mechanical seal, offering reliable sealing, zero leakage and minimal mechanical loss.
6. High efficiency, energy saving and attractive appearance.
7. For diameters above 50, internal components are formed by casting.
Operating Conditions
1. Suitable for conveying clean water or liquids with physical and chemical properties similar to clean water;
2. The conveyed liquid should be free of solid particles, fibers, strong corrosive substances and explosive hazards;
3. Maximum liquid temperature: ≤120℃;
4. Maximum working pressure: ≤2.5MPa;
5. Power supply: 3-phase 380V, 50Hz, with voltage fluctuation within ±5%;
6. Ambient temperature should be below 40℃, with relative humidity below 95%.
Structure Diagram
 |
Serial No.
|
Name
|
Serial No.
|
Name
|
|
1
|
Pump Body
|
11
|
Coupling
|
|
|
2
|
Tightening Bolt
|
12
|
Connecting Seat
|
|
|
3
|
Outer Casing
|
13
|
Air Nozzle
|
|
|
4
|
Impeller
|
14
|
Mechanical Seal
|
|
|
5
|
Impeller Sleeve
|
15
|
Shaft
|
|
|
6
|
Shaft Sleeve
|
16
|
Middle Section
|
|
|
7
|
Seal Gasket
|
17
|
Shaft Sleeve Nut
|
|
|
8
|
Nut
|
18
|
Sleeve Bearing
|
|
|
9
|
Pin
|
19
|
Return Pipe Assembly
|
|
|
10
|
Motor
|
Performance Curve Chart
Performance Parameters and Installation Dimensions
|
Model
|
Stages
|
Flow
|
Head
|
Speed
|
Motor Power
|
Efficiency
|
Required NPSH
|
Weight
|
|
m3/h
|
M
|
r/min
|
kw
|
%
|
NPSH
|
KG
|
||
|
25GDL2-12
|
3
|
2
|
36
|
2900
|
1.1
|
30
|
2.9
|
58
|
|
25GDL2-12
|
4
|
2
|
48
|
2900
|
1.1
|
30
|
2.9
|
62
|
|
25GDL2-12
|
5
|
2
|
60
|
2900
|
2
|
30
|
2.9
|
68
|
|
25GDL2-12
|
6
|
2
|
72
|
2900
|
2
|
30
|
2.9
|
72
|
|
25GDL2-12
|
7
|
2
|
84
|
2900
|
2
|
30
|
2.9
|
78
|
|
25GDL2-12
|
8
|
2
|
96
|
2900
|
2.2
|
30
|
2.9
|
82
|
|
25GDL2-12
|
9
|
2
|
108
|
2900
|
2
|
30
|
2.9
|
86
|
|
25GDL2-12
|
10
|
2
|
120
|
2900
|
3
|
30
|
2.9
|
98
|
|
25GDL2-12
|
11
|
2
|
132
|
2900
|
3
|
30
|
2.9
|
102
|
|
25GDL2-12
|
12
|
2
|
144
|
2900
|
3
|
30
|
2.9
|
|
|
25GDL2-12
|
13
|
2
|
156
|
2900
|
4
|
30
|
2.9
|
|
|
25GDL2-12
|
14
|
2
|
168
|
2900
|
4
|
30
|
2.9
|
|
|
25GDL2-12
|
15
|
2
|
180
|
2900
|
4
|
30
|
2.9
|
|
|
Model
|
Stages
|
Flow
|
Head
|
Speed
|
Motor Power
|
Efficiency
|
Required NPSH
|
Weight
|
|
m3/h
|
M
|
r/min
|
kw
|
%
|
NPSH
|
KG
|
||
|
25GDL4-11
|
3
|
4
|
33
|
2900
|
1.1
|
42
|
2.9
|
58
|
|
25GDL4-11
|
4
|
4
|
44
|
2900
|
1.5
|
42
|
2.9
|
65
|
|
25GDL4-11
|
5
|
4
|
55
|
2900
|
2.2
|
42
|
2.9
|
72
|
|
25GDL4-11
|
6
|
4
|
66
|
2900
|
2.2
|
42
|
2.9
|
76
|
|
25GDL4-11
|
7
|
4
|
77
|
2900
|
3
|
42
|
2.9
|
86
|
|
25GDL4-11
|
8
|
4
|
88
|
2900
|
3
|
42
|
2.9
|
90
|
|
25GDL4-11
|
9
|
4
|
99
|
2900
|
3
|
42
|
2.9
|
94
|
|
25GDL4-11
|
10
|
4
|
110
|
2900
|
4
|
42
|
2.9
|
110
|
|
25GDL4-11
|
11
|
4
|
121
|
2900
|
4
|
42
|
2.9
|
114
|
|
25GDL4-11
|
12
|
4
|
132
|
2900
|
4
|
42
|
2.9
|
|
|
25GDL4-11
|
13
|
4
|
143
|
2900
|
4
|
42
|
2.9
|
|
|
25GDL4-11
|
14
|
4
|
154
|
2900
|
5.5
|
42
|
2.9
|
|
|
25GDL4-11
|
15
|
4
|
165
|
2900
|
5.5
|
42
|
2.9
|
|
|
Model
|
Stages
|
Flow
|
Head
|
Speed
|
Motor Power
|
Efficiency
|
Required NPSH
|
Weight
|
|
m3/h
|
M
|
r/min
|
kw
|
%
|
NPSH
|
KG
|
||
|
40GDL6-12
|
3
|
6
|
36
|
2900
|
1.5
|
52
|
2.9
|
72
|
|
40GDL6-12
|
4
|
6
|
48
|
2900
|
2.2
|
52
|
2.9
|
78
|
|
40GDL6-12
|
5
|
6
|
60
|
2900
|
2.2
|
52
|
2.9
|
82
|
|
40GDL6-12
|
6
|
6
|
72
|
2900
|
3
|
52
|
2.9
|
92
|
|
40GDL6-12
|
7
|
6
|
84
|
2900
|
3
|
52
|
2.9
|
96
|
|
40GDL6-12
|
8
|
6
|
96
|
2900
|
4
|
52
|
2.9
|
112
|
|
40GDL6-12
|
9
|
6
|
108
|
2900
|
4
|
52
|
2.9
|
116
|
|
40GDL6-12
|
10
|
6
|
120
|
2900
|
4
|
52
|
2.9
|
120
|
|
40GDL6-12
|
11
|
6
|
132
|
2900
|
5.5
|
52
|
2.9
|
140
|
|
40GDL6-12
|
12
|
6
|
144
|
2900
|
5.5
|
52
|
2.9
|
|
|
40GDL6-12
|
13
|
6
|
156
|
2900
|
7.5
|
52
|
2.9
|
|
|
40GDL6-12
|
14
|
6
|
168
|
2900
|
7.5
|
52
|
2.9
|
|
|
40GDL6-12
|
15
|
6
|
180
|
2900
|
7.5
|
52
|
2.9
|
|
|
Model
|
Stages
|
Flow
|
Head
|
Speed
|
Motor Power
|
Efficiency
|
Required NPSH
|
Weight
|
|
m3/h
|
M
|
r/min
|
kw
|
%
|
NPSH
|
KG
|
||
|
50GDL12-15
|
2
|
12
|
30
|
2900
|
2.2
|
57
|
3.5
|
113
|
|
50GDL12-15
|
3
|
12
|
45
|
2900
|
3
|
57
|
3.5
|
129
|
|
50GDL12-15
|
4
|
12
|
60
|
2900
|
4
|
57
|
3.5
|
149
|
|
50GDL12-15
|
5
|
12
|
75
|
2900
|
5.5
|
57
|
3.5
|
181
|
|
50GDL12-15
|
6
|
12
|
90
|
2900
|
5.5
|
57
|
3.5
|
190
|
|
50GDL12-15
|
7
|
12
|
105
|
2900
|
7.5
|
57
|
3.5
|
204
|
|
50GDL12-15
|
8
|
12
|
120
|
2900
|
7.5
|
57
|
3.5
|
212
|
|
50GDL12-15
|
9
|
12
|
135
|
2900
|
11
|
57
|
3.5
|
265
|
|
50GDL12-15
|
10
|
12
|
150
|
2900
|
11
|
57
|
3.5
|
273
|
|
Model
|
Stages
|
Flow
|
Head
|
Speed
|
Motor Power
|
Efficiency
|
Required NPSH
|
Weight
|
|
m3/h
|
M
|
r/min
|
kw
|
%
|
NPSH
|
KG
|
||
|
50GDL18-15
|
2
|
18
|
30
|
2900
|
3
|
63
|
4.0
|
122
|
|
50GDL18-15
|
3
|
18
|
45
|
2900
|
4
|
63
|
4.0
|
142
|
|
50GDL18-15
|
4
|
18
|
60
|
2900
|
5.5
|
63
|
4.0
|
175
|
|
50GDL18-15
|
5
|
18
|
75
|
2900
|
7.5
|
63
|
4.0
|
189
|
|
50GDL18-15
|
6
|
18
|
90
|
2900
|
7.5
|
63
|
4.0
|
198
|
|
50GDL18-15
|
7
|
18
|
105
|
2900
|
11
|
63
|
4.0
|
252
|
|
50GDL18-15
|
8
|
18
|
120
|
2900
|
11
|
63
|
4.0
|
261
|
|
50GDL18-15
|
9
|
18
|
135
|
2900
|
15
|
63
|
4.0
|
280
|
|
50GDL18-15
|
10
|
18
|
150
|
2900
|
15
|
63
|
4.0
|
289
|
|
Model
|
Stages
|
Flow
|
Head
|
Speed
|
Motor Power
|
Efficiency
|
Required NPSH
|
Weight
|
|
m3/h
|
M
|
r/min
|
kw
|
%
|
NPSH
|
KG
|
||
|
65GDL24-12
|
2
|
24
|
24
|
2900
|
3
|
63
|
4.0
|
122
|
|
65GDL24-12
|
3
|
24
|
36
|
2900
|
4
|
63
|
4.0
|
142
|
|
65GDL24-12
|
4
|
24
|
48
|
2900
|
5.5
|
63
|
4.0
|
175
|
|
65GDL24-12
|
5
|
24
|
60
|
2900
|
7.5
|
63
|
4.0
|
189
|
|
65GDL24-12
|
6
|
24
|
72
|
2900
|
7.5
|
63
|
4.0
|
252
|
|
65GDL24-12
|
7
|
24
|
84
|
2900
|
11
|
63
|
4.0
|
261
|
|
65GDL24-12
|
8
|
24
|
96
|
2900
|
11
|
63
|
4.0
|
280
|
|
65GDL24-12
|
9
|
24
|
108
|
2900
|
15
|
63
|
4.0
|
289
|
|
65GDL24-12
|
10
|
24
|
120
|
2900
|
15
|
63
|
4.0
|
298
|
|
65GDL24-12
|
11
|
24
|
132
|
2900
|
15
|
63
|
4.0
|
317
|
|
65GDL24-12
|
12
|
24
|
144
|
2900
|
18.5
|
63
|
4.0
|
346
|
|
Model
|
Stages
|
Flow
|
Head
|
Speed
|
Motor Power
|
Efficiency
|
Required NPSH
|
Weight
|
|
m3/h
|
M
|
r/min
|
kw
|
%
|
NPSH
|
KG
|
||
|
80GDL36-12
|
2
|
36
|
24
|
2900
|
4
|
71
|
4.2
|
193
|
|
80GDL36-12
|
3
|
36
|
36
|
2900
|
5.5
|
71
|
4.2
|
227
|
|
80GDL36-12
|
4
|
36
|
48
|
2900
|
7.5
|
71
|
4.2
|
244
|
|
80GDL36-12
|
5
|
36
|
60
|
2900
|
11
|
71
|
4.2
|
292
|
|
80GDL36-12
|
6
|
36
|
72
|
2900
|
11
|
71
|
4.2
|
302
|
|
80GDL36-12
|
7
|
36
|
84
|
2900
|
15
|
71
|
4.2
|
322
|
|
80GDL36-12
|
8
|
36
|
96
|
2900
|
15
|
71
|
4.2
|
332
|
|
80GDL36-12
|
9
|
36
|
108
|
2900
|
18.5
|
71
|
4.2
|
365
|
|
80GDL36-12
|
10
|
36
|
120
|
2900
|
18.5
|
71
|
4.2
|
375
|
|
Model
|
Stages
|
Flow
|
Head
|
Speed
|
Motor Power
|
Efficiency
|
Required NPSH
|
Weight
|
|
m3/h
|
M
|
r/min
|
kw
|
%
|
NPSH
|
KG
|
||
|
80GDL54-14
|
2
|
54
|
28
|
2900
|
7.5
|
73
|
4.0
|
218
|
|
80GDL54-14
|
3
|
54
|
42
|
2900
|
11
|
73
|
4.0
|
267
|
|
80GDL54-14
|
4
|
54
|
56
|
2900
|
15
|
73
|
4.0
|
287
|
|
80GDL54-14
|
5
|
54
|
70
|
2900
|
18.5
|
73
|
4.0
|
320
|
|
80GDL54-14
|
6
|
54
|
84
|
2900
|
18.5
|
73
|
4.0
|
330
|
|
80GDL54-14
|
7
|
54
|
98
|
2900
|
22
|
73
|
4.0
|
373
|
|
80GDL54-14
|
8
|
54
|
112
|
2900
|
30
|
73
|
4.0
|
400
|
|
80GDL54-14
|
9
|
54
|
126
|
2900
|
30
|
73
|
4.0
|
421
|
|
80GDL54-14
|
10
|
54
|
140
|
2900
|
37
|
73
|
4.0
|
432
|
|
Model
|
Stages
|
Flow
|
Head
|
Speed
|
Motor Power
|
Efficiency
|
Required NPSH
|
Weight
|
|
m3/h
|
M
|
r/min
|
kw
|
%
|
NPSH
|
KG
|
||
|
100GDL72-14
|
2
|
72
|
28
|
2900
|
11
|
73
|
4.5
|
276
|
|
100GDL72-14
|
3
|
72
|
42
|
2900
|
15
|
73
|
4.5
|
298
|
|
100GDL72-14
|
4
|
72
|
56
|
2900
|
18.5
|
73
|
4.5
|
336
|
|
100GDL72-14
|
5
|
72
|
70
|
2900
|
22
|
73
|
4.5
|
381
|
|
100GDL72-14
|
6
|
72
|
84
|
2900
|
30
|
73
|
4.5
|
453
|
|
100GDL72-14
|
7
|
72
|
98
|
2900
|
30
|
73
|
4.5
|
466
|
|
100GDL72-14
|
8
|
72
|
112
|
2900
|
37
|
73
|
4.5
|
493
|
|
100GDL72-14
|
9
|
72
|
126
|
2900
|
37
|
73
|
4.5
|
582
|
|
100GDL72-14
|
10
|
72
|
140
|
2900
|
45
|
73
|
4.5
|
595
|
|
Model
|
Stages
|
Flow
|
Head
|
Speed
|
Motor Power
|
Efficiency
|
Required NPSH
|
Weight
|
|
m3/h
|
M
|
r/min
|
kw
|
%
|
NPSH
|
KG
|
||
|
100GDL100-20
|
2
|
108
|
40
|
2900
|
18.5
|
74
|
4.5
|
292
|
|
100GDL100-20
|
3
|
108
|
60
|
2900
|
30
|
74
|
4.5
|
430
|
|
100GDL100-20
|
4
|
108
|
80
|
2900
|
37
|
74
|
4.5
|
463
|
|
100GDL100-20
|
5
|
108
|
100
|
2900
|
45
|
74
|
4.5
|
555
|
|
100GDL100-20
|
6
|
108
|
120
|
2900
|
55
|
74
|
4.5
|
640
|
|
100GDL100-20
|
7
|
108
|
140
|
2900
|
75
|
74
|
4.5
|
840
|
|
100GDL100-20
|
8
|
108
|
160
|
2900
|
75
|
74
|
4.5
|
855
|
|
100GDL100-20
|
9
|
108
|
180
|
2900
|
90
|
74
|
4.5
|
870
|
|
100GDL100-20
|
10
|
108
|
200
|
2900
|
90
|
74
|
4.5
|
955
|
|
Model
|
Stages
|
Flow
|
Head
|
Speed
|
Motor Power
|
Efficiency
|
Required NPSH
|
Weight
|
|
m3/h
|
M
|
r/min
|
kw
|
%
|
NPSH
|
KG
|
||
|
125GDL100-20
|
2
|
108
|
40
|
2900
|
18.5
|
74
|
4.5
|
292
|
|
125GDL100-20
|
3
|
108
|
60
|
2900
|
30
|
74
|
4.5
|
430
|
|
125GDL100-20
|
4
|
108
|
80
|
2900
|
37
|
74
|
4.5
|
463
|
|
125GDL100-20
|
5
|
108
|
100
|
2900
|
45
|
74
|
4.5
|
555
|
|
125GDL100-20
|
6
|
108
|
120
|
2900
|
55
|
74
|
4.5
|
640
|
|
125GDL100-20
|
7
|
108
|
140
|
2900
|
75
|
74
|
4.5
|
840
|
|
125GDL100-20
|
8
|
108
|
160
|
2900
|
75
|
74
|
4.5
|
855
|
|
125GDL100-20
|
9
|
108
|
180
|
2900
|
90
|
74
|
4.5
|
870
|
|
125GDL100-20
|
10
|
108
|
200
|
2900
|
90
|
74
|
4.5
|
955
|
|
Model
|
Stages
|
Flow
|
Head
|
Speed
|
Motor Power
|
Efficiency
|
Required NPSH
|
Weight
|
|
m3/h
|
M
|
r/min
|
kw
|
%
|
NPSH
|
KG
|
||
|
150GDL160-20
|
2
|
160
|
40
|
2900
|
30
|
78
|
4.5
|
422
|
|
150GDL160-20
|
3
|
160
|
60
|
2900
|
37
|
78
|
4.5
|
452
|
|
150GDL160-20
|
4
|
160
|
80
|
2900
|
55
|
78
|
4.5
|
613
|
|
150GDL160-20
|
5
|
160
|
100
|
2900
|
75
|
78
|
4.5
|
820
|
|
150GDL160-20
|
6
|
160
|
120
|
2900
|
75
|
78
|
4.5
|
836
|
|
150GDL160-20
|
7
|
160
|
140
|
2900
|
90
|
78
|
4.5
|
922
|
安装尺寸
 |
|||||||
| Model |
H1
|
L
|
B
|
4-φd1
|
Inlet Flange (J)
|
||
|
DN
|
N-φD2
|
φD
|
|||||
|
25GDL
|
60
|
300
|
200
|
4-φ18
|
25
|
4-φ14
|
85
|
|
40GDL
|
80
|
360
|
235
|
4-φ18
|
40
|
4-φ18
|
110
|
|
50GDL
|
100
|
360
|
235
|
4-φ18
|
50
|
4-φ18
|
125
|
|
65GDL
|
110
|
360
|
235
|
4-φ18
|
65
|
4-φ18
|
145
|
|
80GDL
|
130
|
420
|
300
|
4-φ18
|
80
|
8-φ18
|
160
|
|
100GDL
|
160
|
520
|
350
|
4-φ18
|
100
|
8-φ18
|
180
|
|
125GDL
|
160
|
500
|
400
|
4-φ18
|
125
|
8-φ18
|
210
|
|
150GDL
|
180
|
600
|
400
|
4-φ18
|
150
|
8-φ22
|
245
|
OEM & Custom Solutions
Chaodun Pump provides OEM and ODM customization for GDL vertical multistage centrifugal pumps. Available materials include cast iron, stainless steel, or duplex alloy. Custom options include flange type, impeller size, voltage, and export packaging. Suitable for distributors and system integrators worldwide.
FAQs for Oversea Buyers
1. What applications are suitable for GDL pumps?
Mainly for high-rise building water supply, fire protection, HVAC, and industrial water circulation.
2. Can this pump handle hot water?
Yes, up to 120°C under standard configuration.
3. Are OEM or branding services available?
Yes, Chaodun Pump provides OEM labeling, packaging, and custom color.
4. What’s the standard warranty?
12 months from shipment; extended warranty available.
5. How is the pump shipped?
By sea or air in fumigation-free export wooden cases.
6. What is the maximum pressure?
System pressure ≤ 2.0 MPa.
7. Can I get a sample for testing?
Yes, samples are available, and the cost can be deducted after bulk order confirmation.