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ISG Series Vertical Inline Centrifugal Pump/ Vertical Centrifugal Pump

Reference image. Final construction follows the confirmed model and quotation.

Centrifugal & Pipeline Pumps

ISG Series Vertical Inline Centrifugal Pump/ Vertical Centrifugal Pump

Model: ISG

ISG Series Vertical Inline Centrifugal Pump/ Vertical Centrifugal Pump is designed for clean-water transfer, pressure boosting, circulation and general industrial service. DFIN Pump provides model verification, material selection and technical support based on the actual duty point.

TECHNICAL DATA

Specifications, performance and construction

Confirm the final operating point, materials, motor and connection standard before ordering.

Product Overview

ISG Series Vertical Inline Centrifugal Pump/ Vertical Centrifugal Pump is an industrial centrifugal pump selected for clean-water transfer, pressure boosting, circulation and general industrial service. The final configuration should be verified against the actual liquid, duty point, temperature, installation and power supply.

Typical Applications

Clean-water transfer, pressure boosting, circulation and general industrial service.

Design Features

  • Compact hydraulic design
  • Stable flow with low vibration
  • Multiple materials and motor options
  • Model and material selection supported by DFIN Pump engineers

Extracted Operating Data

  • 1、 <40℃， <95%
  • 1、 0.1%， <0.2mm. 2、 ， ，

Values are reference data from the authorized source catalog. Confirm the selected model before ordering.

Technical Performance Data

ISG vertical pipeline pump structure diagram

1

Take the pressure plug

ISG type structure description:

1. The pump and the motor have the same end cover, with shortened axial dimensions and simple structure.

2. The pump body is equipped with pressure holes and water discharge holes.

3. The pump body is equipped with an exhaust valve, which can be turned around to release the air in the pump before work.

4. The bottom of the pump body is equipped with a mounting base plate and bolt holes to ensure a stable installation of the entire unit.

2

exhaust valve

3

impeller

4

mechanical seal

5

retaining ring

6

Motor

7

axis

8

Conjoined seat

9

impeller nut

10

Pump body

11

drain valve

IRG vertical hot water pipeline pump structure diagram

1

Take the pressure plug

IRG type structure description:

1. A heat-insulating cover is installed between the pump body and the upper structure, which is suitable for situations where the medium temperature T<120 degrees.

2. The combined device of pump and motor bearing ensures the accuracy of shaft operation and improves the reliability of sealing.

3. An air cooling device can be installed in the heat insulation cover according to user requirements.

2

exhaust valve

3

impeller

4

mechanical seal

5

Bearing

6

Motor

7

Conjoined seat

8

retaining ring

9

impeller nut

10

Pump body

11

drain valve

GRG high temperature vertical pipeline pump structure

1

exhaust valve

GRG type structure description:

1. The external water supply is used for heat insulation and cooling between the pump body and the upper structure, which can be used in high temperature occasions with temperatures ranging from -45 degrees to +240 degrees.

2. The combined device of pump and motor bearing ensures the accuracy of shaft operation and improves the reliability of sealing.

3. It adopts combined seal and the lower end is a medium-sized high-temperature mechanical seal with Inlet titanium alloy sealing ring.

2

impeller

3

pump cover

4

mechanical seal

5

retaining ring

6

Motor

7

Bearing

8

Conjoined seat

9

cooling water pipe

10

impeller nut

11

Pump body
Model Port Size Flow Head Efficiency Speed Motor Power RequiredNPSHr
mm m3/h L/S m % r/min KW （NPSH）r
15-80 15 1.1
1.5
2.0 		0.3
0.42
0.55 		8.5
8
7 		26
34
34 		2800 0.18 2.3
20-110 20 1.8
2.5
3.3 		0.5
0.69
0.91 		16
15
13.5 		25
34
35 		2800 0.37 2.3
20-160 20 1.8
2.5
3.3


0.5
0.69
0.91 		33
32
30 		19
25
23 		2900 0.75 2.3
25-110 25 2.8
4
5.2 		0.78
1.11
1.44 		16
15
13.5 		34
42
41 		2900 0.55 2.3
25-125 25 2.8
4
5.2 		0.78
1.11
1.44 		20.6
20
18 		28
36
35 		2900 0.75 2.3
25-125A 25 2.5
3.6
4.6 		0.69
1.0
1.28 		17
16
14.4 		35 2900 0.55 2.3
25-160 25 2.8
4
5.2 		0.78
1.11
1.44 		33
32
30 		24
32
33 		2900 1.5 2.3
25-160A 25 2.6
3.7
4.9 		0.12
1.03
1.36 		29
28
26 		31 2900 1.1 2.3
Model Port Size Flow Head Efficiency Speed Motor Power RequiredNPSHr
mm m3/h L/S m % r/min KW （NPSH）r
32-100(I) 32 4.4
6.3
8.3 		1.22
1.75
2.32 		13.2
12.5
11.3 		48
54
53 		2900 0.75 2.0
32-125 32 3.5
5
6.5 		0.97
0.39
1.8 		22
20
18 		40
44
42 		2900 0.75 2.3
32-125A 32 3.1
4.5
5.8 		0.86
1.25
1.61 		17.6
16
14.4 		43 2900 0.55 2.3
32-160(I) 32 4.4
6.3
8.3 		1.22
1.75
2.32 		33.2
32
30.2 		34
40
42 		2900 2.2 2.0
32-200(I) 32 4.4
6.3
8.3 		1.22
1.75
2.32 		50.5
50
48 		26
33
35 		2900 4 2.0
32-200A 32 2.8
4
5.2 		0.78
1.11
1.44 		44.6
44
42.7 		34
40
42 		2900 2.2 2.0
Model Port Size Flow Head Efficiency Speed Motor Power RequiredNPSHr
mm m3/h L/S m % r/min KW （NPSH）r
40-100 40 4.4
6.3
8.3 		1.22
1.75
2.31 		13.2
12.5
11.3 		48
54
53 		2900 0.55 2.3
40-100A 40 3.9
5.6
7.4 		1.08
1.56
2.06 		10.6
10
9 		52 2900 0.37 2.3
40-125 40 4.4
6.3
8.3 		1.22
1.75
2.31 		21
20
18 		41
46
43 		2900 1.1 2.3
40-125A 40 3.9
5.6
7.4 		1.08
1.56
2.06 		17.6
16
14.4 		40
45
41 		2900 0.75 2.3
40-160 40 4.4
6.3
8.3 		1.22
1.75
2.31 		33
32
30 		35
40
40 		2900 2.2 2.3
40-160A 40 4.1
5.9
7.8 		1.14
1.64
2.17 		29
28
26.3 		34
39
39 		2900 1.5 2.3
40-160B 40 3.8
5.5
7.2 		1.06
1.53
2.0 		25.5
24
22.5 		34
38
37 		2900 1.1 2.3
40-200 40 4.4
6.3
8.3 		1.22
1.75
2.31 		51
50
48 		26
33
32 		2900 4 2.3
40-200A 40 4.1
5.9
7.8 		1.14
1.64
2.17 		45
44
42 		26
31
30 		2900 3 2.3
40-200B 40 3.7
5.3
7.0 		1.03
1.47
1.94 		38
36
34.5 		29 2900 2.2 2.3
40-250 40 4.4
6.3
8.3 		1.22
1.75
2.31 		82
80
74 		24
28
28 		2900 7.5 2.3
40-250A 40 4.1
5.9
7.8 		1.14
1.64
2.17 		72
70
65 		24
28
27 		2900 5.5 2.3
40-250B 40 3.8
5.5
7.0 		1.06
1.53
1.94 		61.5
60
56 		23
27
26 		2900 4 2.3
Model Port Size Flow Head Efficiency Speed Motor Power RequiredNPSHr
mm m3/h L/S m % r/min KW （NPSH）r
40-100(I) 40 8.8
12.5
16.3 		2.44
3.47
4.53 		13.2
12.5
11.3 		55
62
60 		2900 1.1 2.3
40-100(I)A 40 8
11
14.5 		2.22
3.05
4.03 		10.6
10
9 		60 2900 0.75 2.3
40-125(I) 40 8.8
12.5
16.3 		2.44
3.47
4.53 		21.2
20
17.8 		49
58
57 		2900 1.5 2.3
40-125(I)A 40 8
11
14.5 		2.22
3.05
4.03 		17
16
14 		57 2900 1.1 2.3
40-160(I) 40 8.8
12.5
16.3 		2.44
3.47
4.53 		33
32
30 		45
52
51 		2900 3 2.3
40-160(I)A 40 8.2
11.7
15.2 		2.28
3.25
4.22 		29
28
26 		44
51
50 		2900 2.2 2.3
40-160(I)B 40 7.3
10.4
13.5 		2.38
2.89
3.75 		23
22
20.5 		50 2900 1.5 2.3
40-200(I) 40 8.8
12.5
16.3 		2.44
3.47
4.53 		51.2
50
48 		38
46
46 		2900 5.5 2.3
40-200(I)A 40 8.3
11.7
15.3 		2.31
3.25
4.25 		45.0
44
42 		37
45
45 		2900 4

2.3

40-200(I)B 40 7.5
10.6
13.8 		2.08
2.94
3.83 		37
36
34 		44 2900 3 2.3
40-250(I) 40 8.8
12.5
16.3 		2.44
3.47
4.53 		81.2
80
77.5 		31
38
40 		2900 11 2.3
40-250(I)A 40 8.2
11.6
15.2 		2.28
3.22
4.22 		71.0
70
68 		38 2900 7.5 2.3
40-250(I)B 40 7.6
10.8
14 		2.11
3.0
3.89 		61.4
60
58 		37 2900 7.5 2.3
40-250(I)C 40 7.1
10.0
13.1 		1.97
2.78
3.64 		53.2
52
50.4 		36 2900 5.5 2.3
Model Port Size Flow Head Efficiency Speed Motor Power RequiredNPSHr
mm m3/h L/S m % r/min KW （NPSH）r
50-100 50 8.8
12.5
16.3 		2.44
3.47
4.53 		13.6
12.5
11.3 		55
62
60 		2900 1.1 2.3
50-100A 50 8
11
14.5 		2.22
3.05
4.03 		11
10
9 		60 2900 0.75 2.3
50-125 50 8.8
12.5
16.3 		2.44
3.47
4.53 		21.5
20
17.8 		49
58
57 		2900 1.5 2.3
50-125A 50 8
11
14.5 		2.22
3.05
4.03 		17
16
14 		57 2900 1.1 2.3
50-160 50 8.8
12.5
16.3 		2.44
3.47
4.53 		33
32
30 		45
52
51 		2900 3 2.3
50-160A 50 8.2
11.7
15.2 		2.28
3.25
4.22 		29
28
26 		44
51
50 		2900 2.2 2.3
50-160B 50 7.3
10.4
13.5 		2.38
2.89
3.75 		23
22
20.5 		50 2900 1.5 2.3
50-200 50 8.8
12.5
16.3 		2.44
3.47
4.53 		52
50
48 		38
46
46 		2900 5.5 2.3
50-200A 50 8.3
11.7
15.3 		2.31
3.25
4.25 		45.8
44
42 		37
45
45 		2900 4 2.3
50-200B 50 7.5
10.6
13.8 		2.08
2.94
3.83 		37
36
34 		44 2900 3 2.3
50-250 50 8.8
12.5
16.3 		2.44
3.47
4.53 		82
80
77.5 		29
38
40 		2900 11 2.3
50-250A 50 8.2
11.6
15.2 		2.28
3.22
4.22 		71.5
70
68 		38 2900 7.5 2.3
50-250B 50 7.6
10.8
14 		2.11
3.0
3.89 		61.4
60
58 		37 2900 7.5 2.3
50-250C 50 7.1
10.0
13.1 		1.97
2.78
3.64 		53.2
52
50.4 		36 2900 5.5 2.3
Model Port Size Flow Head Efficiency Speed Motor Power RequiredNPSHr
mm m3/h L/S m % r/min KW （NPSH）r
50-100(I) 50 17.5
25
32.5 		4.86
6.94
9.03 		13.7
12.5
10.5 		67
69
69 		2900 1.5 2.5
50-100(I)A 50 15.6
22.3
29 		4.3
6.19
8.1 		11
10
8.4 		65
67
68 		2900 1.1 2.5
50-125(I) 50 17.5
25
32.5 		4.86
6.94
9.03 		21.5
20
18 		60
68
67 		2900 3 2.5
50-125(I)A 50 15.6
22.3
29 		4.33
6.19
8.1 		17
16
13.6 		58
66
65 		2900 2.2 2.5
50-160(I) 50 17.5
25
32.5 		4.68
6.94
9.03 		34.4
32
27.5 		54
63
60 		2900 4 2.5
50-160(I)A 50 16.4
23.4
30.4 		4.56
6.5
8.44 		30
28
24 		54
62
59 		2900 4 2.5
50-160(I)B 50 15.0
21.6
28 		4.17
6.0
7.78 		26
24
20.6 		58 2900 3 2.5
50-200(I) 50 17.5
25
32.5 		4.86
6.94
9.03 		52.7
50
45.5 		49
58
59 		2900 7.5 2.5
50-200(I)A 50 16.4
23.5
30.5 		4.56
6.53
8.47 		46.4
44
40 		48
57
58 		2900 7.5 2.5
50-200(I)B 50 15.2
21.8
28.3 		4.22
6.06
7.86 		40
38
34.5 		55 2900 5.5 2.5
50-250(I) 50 17.5
25
32.5 		4.86
6.94
9.03 		82
80
76.5 		39
50
52 		2900 15 2.5
50-250(I)A 50 16.4
23.4
30.5 		4.56
6.5
8.47 		71.5
70
67 		39
50
52 		2900 11 2.5
50-250(I)B 50 15
21.6
28 		4.17
6.0
7.78 		61
60
57.4 		38
49
54 		2900 11 2.5
50-315(I) 50 17.5
25
32.5 		4.86
6.94
9.03 		128
125
122 		30
40
44 		2900 30 2.5
50-315(I)A 50 16.6
23.7
31 		4.61
6.58
8.6 		115
113
110 		30
40
44 		2900 22 2.5
50-315(I)B 50 15.7
22.5
29.2 		4.36
6.25
8.0 		103
101
98 		39 2900 18.5 2.5
50-315(I)C 50 14.4
20.6
26.8 		4.0
5.72
7.44 		86
85
83 		38 2900 15 2.5
Model Port Size Flow Head Efficiency Speed Motor Power RequiredNPSHr
m3/h L/S m % r/min KW （NPSH）r
65-100 65 17.5
25
32.5 		4.86
6.94
9.03 		13.7
12.5
10.5 		67
69
69 		2900 1.5 2.5
65-100A 65 15.6
22.3
29 		4.3
6.19
8.1 		11
10
8.4 		65
67
68 		2900 1.1 2.5
65-125 65 17.5
25
32.5 		4.86
6.94
9.03 		21.5
20
18 		60
68
67 		2900 3 2.5
65-125A 65 15.6
22.3
29 		4.33
6.19
8.1 		17
16
14.4 		58
66
65 		2900 2.2 2.5
65-160 65 17.5
25
32.5 		4.86
6.94
9.03 		34.4
32
27.5 		54
63
60 		2900 4 2.5
65-160A 65 16.4
23.4
30.4 		4.56
6.5
8.44 		30
28
24 		54
62
59 		2900 4 2.5
65-160B 65 15.0
21.6
28 		4.17
6.0
7.78 		26
24
20.6 		58 2900 3 2.5
65-200 65 17.5
25
32.5 		4.86
6.94
9.03 		52.7
50
45.5 		49
58
59 		2900 7.5 2.5
65-200A 65 16.4
23.5
30.5 		4.56
6.53
8.47 		46.4
44
40 		48
57
58 		2900 7.5 2.5
65-200B 65 15.2
21.8
28.3 		4.22
6.06
7.86 		40
38
34.5 		55 2900 5.5 2.5
65-250 65 17.5
25
32.5 		4.86
6.94
9.03 		82
80
76.5 		39
50
52 		2900 15 2.5
65-250A 65 16.4
23.4
30.5 		4.56
6.5
8.47 		71.5
70
67 		39
50
52 		2900 11 2.5
65-250B 65 15
21.6
28 		4.17
6.0
7.78 		61
60
57.4 		38
49
54 		2900 11 2.5
65-315 65 17.5
25
32.5 		4.86
6.94
9.03 		127
125
122 		32
40
44 		2900 30 2.5
65-315A 65 16.6
23.7
31 		4.61
6.58
8.6 		115
113
110 		32
40
44 		2900 22 2.5
65-315B 65 15.7
22.5
29.2 		4.36
6.25
8.0 		103
101
98 		39 2900 18.5 2.5
65-315C 65 14.4
20.6
26.8 		4.0
5.72
7.44 		86
85
83 		38 2900 15 2.5
Model Port Size Flow Head Efficiency Speed Motor Power RequiredNPSHr
mm m3/h L/S m % r/min KW （NPSH）r
65-100(I) 65 35
50
65 		9.72
13.9
18.1 		13.8
12.5
10 		67
73
70 		2900 3 3.0
65-100(I)A 65 31.3
44.7
58 		8.7
12.4
16.1 		11
10
8 		66
72
69 		2900 2.2 3.0
65-125(I) 65 35
50
65 		9.72
13.9
18.1 		22
20
17 		67
72.5
70 		2900 5.5 3.0
65-125(I)A 65 31.3
44.7
58 		8.7
12.5
16.1 		17.5
16
13.6 		66
71
69 		2900 4 3.0
65-160(I) 65 35
50
65 		9.72
13.9
18.1 		35
32
28 		63
71
70 		2900 7.5 3.0
65-160(I)A 65 32.7
46.7
61 		9.1
13.0
16.9 		30.6
28
24 		62
70
69 		2900 7.5 3.0
65-160(I)B 65 30.3
43.3
56.3 		8.4
12.0
15.6 		26
24
21 		69 2900 5.5 3.0
65-200(I) 65 35
50
65 		9.72
13.9
18.1 		53.5
50
46 		55
67
68 		2900 15 3.0
65-200(I)A 65 32.8
47
61 		9.1
13.1
16.9 		47
44
40 		54
66
67 		2900 11 3.0
65-200(I)B 65 30.5
43.5
56.6 		8.5
12.1
15.7 		40.6
38
33.4 		65 2900 7.5 3.0
65-250(I) 65 35
50
65 		9.72
13.9
18.1 		83
80
72 		52
59
60 		2900 22 3.0
65-250(I)A 65 32.5
46.7
61 		9.0
13.0
16.9 		73
70
63 		52
59
60 		2900 18.5 3.0
65-250(I)B 65 30
43.3
56 		8.3
12.0
15.6 		62
60
54 		58 2900 15 3.0
65-315(I) 65 35
50
65 		9.72
13.9
18.1 		128
125
121 		44
54
57 		2900 37 3.0
65-315(I)A 65 32.5
46.5
60.5 		9.0
12.9
16.8 		112.6
110
106.4 		43
54
57 		2900 30 3.0
65-315(I)B 65 31
44.5
58 		8.6
12.4
16.1 		102.5
100
98 		53 2900 30 3.0
65-315(I)C 65 29
41
53.6 		8.1
11.4
14.9 		87
85
83 		51 2900 22 3.0
Model Port Size Flow Head Efficiency Speed Motor Power RequiredNPSHr
mm m3/h L/S m % r/min KW （NPSH）r
80-100 80 35
50
65 		9.72
13.9
18.1 		13.8
12.5
10 		67
73
70 		2900 3 3.0
80-100A 80 31.3
44.7
58 		8.7
12.5
16.1 		11
10
8 		66
72
69 		2900 2.2 3.0
80-125 80 35
50
65 		9.72
13.9
18.1 		22
20
17 		67
72.5
70 		2900 5.5 3.0
80-125A 80 31.3
45
58 		8.7
12.5
16.1 		17.5
16
13.6 		66
71
69 		2900 4 3.0
80-160 80 35
50
65 		9.72
13.9
18.1 		35
32
28 		63
71
70 		2900 7.5 3.0
80-160A 80 32.7
46.7
61 		9.1
13.0
16.9 		30.6
28
24 		62
70
69 		2900 7.5 3.0
80-160B 80 30.3
43.3
56.3 		8.4
12.0
15.6 		26
24
21 		69 2900 5.5 3.0
80-200 80 35
50
65 		9.72
13.9
18.1 		53.5
50
46 		55
67
68 		2900 15 3.0
80-200A 80 32.8
47
61 		9.1
13.1
16.9 		47
44
40 		54
66
67 		2900 11 3.0
80-200B 80 30.5
43.5
56.6 		8.5
12.1
15.7 		40.6
38
33.4 		65 2900 7.5 3.0
80-250 80 35
50
65 		9.72
13.9
18.1 		83
80
72 		52
59
60 		2900 22 3.0
80-250A 80 32.5
46.7
61 		9.0
13.0
16.9 		73
70
63 		52
59
60 		2900 18.5 3.0
80-250B 80 30
43.3
56 		8.3
12.0
15.6 		62
60
54 		58 2900 15 3.0
80-315 80 35
50
65 		9.72
13.9
18.1 		128
125
122 		43
54
57 		2900 37 3.0
80-315A 80 32.5
46.5
60.5 		9.0
12.9
16.8 		112.6
110
107.4 		43
54
57 		2900 30 3.0
80-315B 80 31
44.5
58 		8.6
12.4
16.1 		102.5
100
98 		53 2900 30 3.0
80-315C 80 29
41
53.6 		8.1
11.4
14.9 		98
85
83 		51 2900 22 3.0
80-350 80 35
50
65 		9.72
13.9
18.1 		146
150
142 		55
66
67 		2900 55 3.0
80-350A 80 31
44.5
58 		8.6
12.4
16.1 		138.4
142
134.8 		65 2900 45 3.0
80-350B 80 29
41
53.6 		8.1
11.4
14.9 		131.4
135
127.8 		63 2900 37 3.0
Model Port Size Flow Head Efficiency Speed Motor Power RequiredNPSHr
mm m3/h L/S m % r/min KW （NPSH）r
80-100(I) 80 70
100
130 		19.4
27.8
36.1 		13.6
12.5
11 		66
76
75 		2900 5.5 4.5
80-100(I)A 80 62.6
89
116 		17.4
24.7
32.2 		11
10
8.8 		64
74
74 		2900 4 4.5
80-125(I) 80 70
100
130 		19.4
27.8
36.1 		23.5
20
14 		70
76
65 		2900 11 4.5
80-125(I)A 80 62.6
89
116 		17.4
24.7
32.2 		19
16
11 		68
74
65 		2900 7.5 4.5
80-160(I) 80 70
100
130 		19.4
27.8
36.1 		36.5
32
24 		70
76
65 		2900 15 4.5
80-160(I)A 80 65.4
93.5
121.6 		18.2
26.0
33.8 		32
28
21 		68
74
67 		2900 11 4.5
80-160(I)B 80 60.6
86.6
112.5 		16.8
24.1
31.3 		72
24
18 		72 2900 11 4.5
80-200(I) 80 70
100
130 		19.4
27.8
36.1 		54
50
42 		65
74
73 		2900 22 4.0
80-200(I)A


80 65.4
93.5
121.6 		18.2
26.0
33.8 		47.5
44
37 		64
73
72 		2900 18.5 4.0
80-200(I)B 80 61
87
113 		16.9
24.2
31.4 		41
38
32 		71 2900 15 4.0
80-250(I) 80 70
100
130 		19.4
27.8
36.1 		87
80
68 		62
69
68 		2900 37 4.0
80-250(I)A 80 65.4
93.5
121.6 		18.2
26.0
33.8 		76
70
59.5 		61
68
67 		2900 30 4.0
80-250(I)B 80 61
87
113 		16.9
24.2
31.4 		65
60
51 		66 2900 30 4.0
80-315(I) 80 70
100
130 		19.4
27.8
36.1 		132
125
114 		55
66
67 		2900 75 4.0
80-315(I)A 80 66.5
95
123.6 		18.5
26.4
34.3 		119
113
103 		55
66
67 		2900 55 4.0
80-315(I)B 80 63
90
117 		17.5
25
32.5 		106.6
101
92 		65 2900 45 4.0
80-315(I)C 80 58
82
107 		16.1
22.8
29.7 		90
85
76 		63 2900 37 4.0
Model Port Size Flow Head Efficiency Speed Motor Power RequiredNPSHr
mm m3/h L/S m % r/min KW （NPSH）r
100-100 100 70
100
130 		19.4
27.8
36.1 		13.6
12.5
11 		66
76
75 		2900 5.5 4.5
100-100A 100 62.6
89
116 		17.4
47
32.2 		11
10
8.8 		64
74
74 		2900 4 4.5
100-125 100 70
100
130 		19.4
27.8
36.1 		23.5
20
14 		70
76
65 		2900 11 4.5
100-125A 100 62.6
89
116 		17.4
24.7
32.2 		19
16
11 		68
74
63 		2900 7.5 4.5
100-160 100 70
100
130 		19.4
27.8
36.1 		36.5
32
24 		70
76
65 		2900 15 4.5
100-160A 100 65.4
93.5
121.6 		18.2
26.0
33.8 		32
28
21 		68
74
67 		2900 11 4.5
100-160B 100 60.6
86.6
112.5 		16.8
24.1
31.3 		27
24
18 		72 2900 11 4.5
100-200 100 70
100
130 		19.4
27.8
36.1 		54
50
42 		65
74
73 		2900 22 4.0
100-200A 100 65.4
93.5
121.6 		18.2
26.0
33.8 		47.5
44
37 		64
73
72 		2900 18.5 4.0
100-200B 100 61
87
113 		16.9
24.2
31.4 		41
38
32 		71 2900 15 4.0
100-250 100 70
100
130 		19.4
27.8
36.1 		37
80
68 		62
69
68 		2900 37 4.0
100-250A 100 65.4
93.5
121.6 		18.2
26.0
33.8 		76
70
59.5 		61
68
67 		2900 30 4.0
100-250B 100 61
87
113 		16.9
24.2
31.4 		65
60
51 		66 2900 30 4.0
100-315 100 70
100
130 		19.4
27.8
36.1 		132
125
114 		55
66
67 		2900 75 4.0
100-315A 100 66.5
95
123.6 		18.5
26.4
34.3 		119
113
103 		65
66
67 		2900 55 4.0
100-315B 100 63
90
117 		17.5
25
32.5 		106.6
101
92 		65 2900 45 4.0
100-315C 100 58
82
107 		16.1
22.8
29.7 		90
85
76 		63 2900 37 4.0
Model Port Size Flow Head Efficiency Speed Motor Power RequiredNPSHr
mm m3/h L/S m % r/min KW （NPSH）r
100-100(I) 100 96
160
192 		26.7
44.4
53.3 		14
12.5
10 		64
73
70 		2900 11 4.5
100-125(I) 100 96
160
192 		26.7
44.4
53.3 		24
20
14 		62
74
69 		2900 15 4.5
100-125(I)A 100 84
140
168 		23.3
39
46.7 		20
17
12 		64
72
68 		2900 11 4.5
100-160(I) 100 96
160
192 		26.7
44.4
53.3 		36
32
27 		69
79
75 		2900 22 5.6
100-160(I)A 100 84
140
168 		23.3
39
46.7 		32
28
23.5 		66
76
72 		2900 18.5 5.0
100-200(I) 100 96
160
192 		26.7
44.4
53.3 		53
50
45 		69
79
78 		2900 37 5.2
100-200(I)A 100 84
140
168 		23.3
39
46.7 		48
45
40 		64
74
73 		2900 30 4.5
100-200(I)B 100 60
100
120 		16.7
27.8
33.3 		43
40
36 		72 2900 22 4.5
100-250(I) 100 96
160
192 		26.7
44.4
53.3 		83
80
72 		65
77
74 		2900 55 4.8
100-250(I)A 100 84
140
168 		23.3
39
46.7 		75
72
65 		60
72
69 		2900 45 4.5
100-250(I)B 100 60
100
120 		16.7
27.8
33.3 		68
65
58 		70 2900 37 4.5
100-350 100 60
100
120 		16.7
27.8
33.3 		153.6
150
142 		72
57
74 		2900 90 4.0
100-350A 100 61
87
113 		16.9
24.2
31.4 		145.6
142
134 		75 2900 75 4.0
100-350B 100 58
82
107 		16.1
22.8
29.7 		138.6
135
127 		75 2900 55 4.0
Model Port Size Flow Head Efficiency Speed Motor Power RequiredNPSHr
mm m3/h L/S m % r/min KW （NPSH）r
125-100 125 96
160
192 		26.7
44.4
53.3 		13
12.5
12 		82 2900 11 4.0
125-100A 125 86
143
172 		23.9
39.7
47.8 		10.4
10
9.6 		77 2900 7.5 4.0
125-125 125 96
160
192 		26.7
44.4
53.3 		22.6
20
17 		80 2900 15 4.0
125-125A 125 86
143
172 		23.9
39.7
47.8 		18
16
13.6 		77 2900 11 4.0
125-160 125 96
160
192 		26.7
44.4
53.3 		36
32
28 		78 2900 22 4.0
125-160A 125 90
150
180 		25
41.7
50 		31.5
28
24.5 		76 2900 18.5 4.0
125-160B 125 83
138
166 		21.7
38.3
46.1 		27
24
21 		73 2900 15 4.0
125-200 125 96
160
192 		26.7
44.4
53.3 		55
50
46 		77 2900 37 5.5
125-200A 125 90
150
180 		25
41.7
50 		48.4
44
40.5 		76 2900 30 5.5
125-200B 125 83
138
166 		21.7
38.3
46.1 		41.3
37.5
34.5 		75 2900 22 5.5
125-250 125 96
160
192 		26.7
44.4
53.3 		87
80
73 		75 2900 55 5.0
125-250A 125 90
150
180 		25
41.7
50 		76
70
84 		74 2900 45 5.5
125-250B 125 83
138
166 		21.7
38.3
46.1 		65
60
55 		73 2900 37 5.5
125-315 125 96
160
192 		26.7
44.7
53.3 		133
125
119 		70 2900 90 5.0
125-315A 125 90
150
180 		25
41.7
50 		117
110
104.6 		70 2900 75 5.0
125-315B 125 86
143
172 		23.9
39.7
47.8 		106.4
100
95.2 		69 2900 75 5.0
125-315C 125 80.5
134
161 		22.4
37.2
44.7 		96
88
86 		67 2900 55 5.0
Model Port Size Flow Head Efficiency Speed Motor Power RequiredNPSHr
mm m3/h L/S m % r/min KW （NPSH）r
150-125 150 96
160
192 		26.7
44.4
53.3 		22.6
24
17 		66
76
76 		2900 11 4.0
150-125A 150 90
150
180 		25
41.7
50 		18
16
13.6 		77 2900 7.5 4.0
150-160 150 96
160
192 		26.7
44.4
53.3 		36
32
27 		75 2900 22 4.0
150-160A 150 90
150
180 		25
41.7
50 		32
28
23.5 		76 2900 18.5 4.0
150-160B 150 84
140
168 		23.3
39
46.7 		27
24
21 		73 2900 15 4.0
150-200 150 140
200
260 		38.9
55.6
72.2 		13.8
12.5
10.6 		68
78
78 		1450 15 3.0
150-200A 150 125
176
232.5 		34.7
49.7
64.6 		11
10
8.5 		66
76
76 		1450 11 3.0
150-200B 150 84
140
168 		23.3
39
46.7 		41
38
34 		75 2900 22 4.0
150-250 150 140
200
260 		38.9
55.6
72.2 		21.8
20
17 		73
79
77 		1450 18.5 3.0
150-250A 150 129
184.4
240 		35.8
51.2
66.7 		18.5
17
14.4 		72
78
76 		1450 15 3.0
150-250B 150 117
167
217.5 		32.5
46.4
60.4 		15.2
14
12 		76 1450 11 3.0
150-315 150 140
200
260 		38.9
55.6
72.2 		33.8
32
28 		70
78
73 		1450 30 2.5
150-315A 150 131
187
243 		36.4
51.9
67.5 		29.5
28
24.5 		69
77
77 		1450 22 3.5
150-315B 150 121
173
225 		33.5
48.1
62.5 		25
24
21 		76 1450 18.5 3.5
150-350 150 96
160
192 		26.7
44.4
53.3 		153.6
150
142.8 		80 2900 110 5.5
150-350A 150 90
150
180 		25
41.7
50 		145.6
142
134.8 		70 2900 90 5.2
150-350B 150 84
140
168 		23.3
39
46.7 		138.6
135
127.8 		65
76
74 		2900 75 5.5
150-400 150 140
200
260 		38.9
55.6
72.2 		53
50
44 		68
75
71 		1450 45 3.5
150-400A 150 131
187
243 		36.4
51.9
67.5 		46.6
44
38.3 		67
74
70 		1450 37 3.5
150-400B 150 122
174
226.5 		33.9
48.3
62.9 		40
38
33 		73 1450 30 3.5
150-400C 150 112
160
208 		31.1
44.4
57.8 		34
32
28 		71 1450 22 3.5
Model Port Size Flow Head Efficiency Speed Motor Power RequiredNPSHr
mm m3/h L/S m % r/min KW （NPSH）r
150-250(I) 150 120
200
240 		33.3
55.6
66.7 		87
80
72 		65
76
74 		2900 75 4.5
150-250(I)A 150 112
187
224 		31.1
51.9
62.2 		76
70
63 		64
75
73 		2900 55 4.5
150-250(I)B 150 104
173
208 		28.9
48.1
57.8 		65
60
54 		63
74
72 		2900 45 4.5
150-315(I) 150 120
200
240 		33.3
55.6
66.7 		133
125
120 		58
73
75 		2900 110 4.5
150-315(I)A 150 112
187
224 		31.1
51.9
62.2 		116
110
105 		57
72
74 		2900 90 4.5
150-315(I)B 150 104
173
208 		28.9
48.1
57.8 		100
95
91 		55
70
72 		2900 75 4.5
Model Port Size Flow Head Efficiency Speed Motor Power RequiredNPSHr
mm m3/h L/S m % r/min KW （NPSH）r
200-200 200 140
200
260 		38.9
55.6
72.2 		13.8
12.5
10.6 		68
78
78 		1450 15 3.0
200-200A 200 125
179
232.5 		34.7
49.7
64.6 		11
10
8.5 		66
76
76 		1450 11 3.0
200-250 200 140
200
260 		21.8
20
17 		21.8
20
17 		73
79
77 		1450 18.5 3.0
200-250A 200 129
184.4
240 		18.5
17
14.4 		18.5
17
14.4 		72
78
76 		1450 15 3.0
200-250B 200 117
167
217.5 		15.2
14
12 		15.2
14
12 		76 1450 11 3.0
200-315 200 140
200
260 		33.8
32
28 		33.8
32
28 		70
78
78 		1450 30 3.5
200-315A 200 131
189
243 		29.5
28
24.5 		29.5
28
24.5 		69
77
77 		1450 22 3.5
200-315B 200 121
173
225 		25
24
21 		25
24
21 		76 1450 18.5 3.5
200-400 200 140
200
260 		53
50
44 		53
50
44 		68
75
71 		1450 45 3.5
200-400A 200 131
187
243 		46.6
44
38.3 		46.6
44
38.3 		67
74
70 		1450 37 3.5
200-400B 200 122
174
226.5 		40
38
33 		40
38
33 		73 1450 30 3.5
200-400C 200 112
160
208 		34
32
28 		34
32
28 		71 1450 22 3.5
Model Port Size Flow Head Efficiency Speed Motor Power RequiredNPSHr
mm m3/h L/S m % r/min KW （NPSH）r
200-200(I) 200 280
400
520 		77.8
111.1
144 		13.4
12.5
10.5 		70
80
79 		1450 22 4.0
200-200(I)A 200 250
358
465 		69.4
90.4
129.2 		10.7
10
8.5 		68
73
77 		1450 18.5 4.0
200-250(I) 200 280
400
520 		77.8
111.1
144 		22.2
20
14 		75
80
72 		1450 30 4.0
200-250(I)A 200 250
358
465 		69.4
99.4
129.2 		18
16
11.2 		73
78
70 		1450 22 4.0
200-250(I)B 200 226
322
419 		62.8
89.4
116.4 		14.4
13
7.3 		70
75
67 		1450 18.5 4.0
200-315(I) 200 280
400
520 		77.8
111.4
144 		36
32
26 		73
80
75 		1450 55 4.0
200-315(I)A 200 262
374
486 		72.8
103.9
135 		31.5
28
23 		72
79
74 		1450 45 4.0
200-315(I)B 200 242
346
450 		67.3
96.1
125 		27
24
19.5 		78 1450 37 4.0
200-400(I) 200 280
400
520 		77.8
111.4
144 		54.5
50
39 		75
81
77 		1450 75 4.0
200-400(I)A 200 262
374
486 		72.8
103.9
135 		48
44
34 		80 1450 75 4.0
200-400(I)B 200 242
346
450 		67.2
96.1
125 		41.4
38
29.6 		78 1450 55 5.0
200-400(I)C 200 224
320
416 		62.2
88.9
115.6 		34.9
32
25 		76 1450 45 5.0
Model Port Size Flow Head Efficiency Speed Motor Power RequiredNPSHr
mm m3/h L/S m % r/min KW （NPSH）r
250-250 250 350
550
650 		97.2
152.8
180.5 		22
20
16 		78
82
81 		1450 45 5.0
250-250A 250 300
500
600 		83.3
139
166.7 		18.3
17
14 		76
80
80 		1450 37 5.0
250-235 250 300
500
600 		83.3
139
166.7 		14
12.5
11 		73
78
70 		1480 22 4.5
250-300 250 300
500
600 		83.3
139
166.7 		22
20
16 		78 1480 37 4.5
250-315 250 350
550
650 		97.2
152.8
180.5 		34
32
28 		76
80
79 		1450 75 5.5
250-315A 250 300
500
600 		83.3
139
166.7 		29.5
28
24 		74
78
77 		1450 55 5.5
250-315B 250 260
450
520 		72.2
125
144.4 		25
24
20 		70
74
72 		1450 45 5.5
250-400 250 300
500
600 		83.3
139
166.7 		54.5
50
39 		72 1480 90 4.5
Model Port Size Flow Head Efficiency Speed Motor Power RequiredNPSHr
mm m3/h L/S m % r/min KW （NPSH）r
300-235 300 480
720
900 		133.3
200
250 		20
18
15.5 		77
81
74 		970 55 5.0
300-235A 300 438
607
821 		121.7
182.5
228.1 		16.5
15
13 		75
79
72 		970 45 5.0
300-235B 300 400
600
750 		111.1
167.0
208.3 		14
12.5
11 		73
77
70 		970 37 5.0
300-300 300 480
720
900 		133.3
200
250 		31
28
25 		77
81
77 		970 75 5.0
300-300A 300 444
666
833 		123.3
185
231.4 		26.5
24
21.5 		76
80
76 		970 75 5.0
300-300B 300 415
623
779 		115.3
173.1
261.4 		23
21
18.5 		79 970 55 5.0
300-380 300 480
720
900 		133.3
200
250 		48
44
34 		84 970 132 5.0
300-380A 300 444
666
833 		123.3
185
231.4 		41.4
38
30 		80 970 110 5.0
300-380B 300 409
614
767 		113.6
170.6
213.1 		35
32
25 		78 970 90 5.0
300-235(I) 300 718
1080
1345 		199.4
300
373.6 		44.6
40
34.6 		82 1450 160 5.5
300-235(I)A 300 642
965
1203 		178.3
268.1
334.2 		35.7
32
27.7 		80 1450 132 5.5
Fault phenomena Possible causes Troubleshooting
1. The water pump does not discharge water a. The inlet outlet valve is not opened, the inlet and outlet pipelines are blocked, and the flow path impeller is blocked.
b. The motor runs in the wrong direction, and the motor speed is very slow due to lack of phase.
c. The suction pipe is leaking.
d. The pump is not filled with liquid.
There is air in the pump chamber.
e. Inlet water supply is insufficient,
The Suction Lift is too high and the bottom valve is leaking.
f. The pipeline resistance is too large and the pump type is improperly selected.		 a. Check and remove obstructions
b. Adjust the direction of the Motor and secure the Motor wiring.
c. Tighten each sealing surface and remove air
d. Open the pump cover or open the exhaust valve
exhaust air
e. Shutdown for inspection and adjustment (grid-connected tap water
This phenomenon is prone to occur when using pipes and suction lifts.
f. Reduce pipeline bends and reselect the pump.
2. Insufficient water pump flow a First examined for 1.
b. Pipes and pump impellers are partially blocked,
Scale deposition and insufficient valve opening
c. Voltage is low
d. Impeller wear		 a. First press 1.Exclude
b. Remove obstructions
Readjust the valve opening.
c. Voltage stabilization.
d. Replace the impeller.

3. Power is too large

 a. Use exceeding the rated flow.
b. Suction Lift is too high.
c. Pump bearing wear.		 a. Adjust Flow and close the Outlet valve.
b. Reduce
c. Replace the impeller

4. Noise and vibration

 a. The pipeline support is unstable.
b. Liquid mixed with gas.
c. Cavitation occurs.
d. Bearing damage.
e. Motor is overloaded and running hot.		 a. Stabilize the pipeline
b. Increase suction pressure and exhaust
c. Reduce vacuum degree
d. Replace bearings
e. Press 5 to complete the process.
5. Motor fever a. Flow is too large and overloaded.
b. Bump.
c. Motor bearing is damaged.
d. Insufficient Voltage.		 a. Close the outlet valve.
b. Check and rule out.
c. Replace the bearings.
d. Voltage stabilization.
6. Water pump leaks a. Mechanical seal wear.
b. The pump body has sand holes or cracks.
c. The sealing surface is uneven.
d. The installation bolts are loose.		 a. Replace.
b. Welding repair or replacement.
c. Trimming.
d. Strong.

Selection Information Required

Please provide medium, concentration, flow, total head or pressure, temperature, viscosity or solids, voltage, frequency and installation method. DFIN Pump will confirm the suitable model and materials.

Catalog reference: authorized YZJ product data · Model ISG

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