The IRG type hot water pipeline centrifugal pump is a new generation of energy-saving and environmentally friendly vertical hot water centrifugal pump developed independently based on the ISG type. This series of pumps has excellent performance, high reliability, long service life, reasonable structure, beautiful appearance, and is of high level.
IRG type hot water pipeline centrifugal pumpisISG typeA new generation of energy-saving and environmentally friendly vertical hot water independently researched and developed on the basis ofcentrifugal pumpThis series of pumps has excellent performance, high reliability, long service life, reasonable structure, beautiful appearance, and is at the industry level.
IRG type single-stage single suction hot water pumpSuitable for pumps used in metallurgy, chemical industry, textile, wood processing, papermaking, as well as high-temperature hot water pressurized circulation transportation for boilers in hotels, bathrooms, and guesthouses, and for urban housing heating circulation. The operating temperature is below 105 ℃.
Working conditions of IRG type hot water pipeline centrifugal pump
1. The suction pressure is ≤ 1.6MPa, or the maximum working pressure of the pump system is ≤ 1.6MPa, that is, the pump suction inlet pressure+pump head is ≤ 1.6MPa, and the pump static pressure test pressure is 2.5MPa. Please specify the system working pressure when ordering. When the working pressure of the pump system is greater than 1.6MPa, it should be separately stated when ordering, so that the overcurrent and connection parts of the pump can be made of cast steel materials during manufacturing.
2. Environmental temperature<40 ℃, relative humidity<95%.
3. The volume content of solid particles in the conveyed medium shall not exceed 0.1% of the unit volume, and the particle size shall be less than 0.2mm.
Note: If the medium used is with small particles, please indicate it when ordering so that the manufacturer can use wear-resistant mechanical seals.
Advantages of IRG type hot water pipeline centrifugal pump product
Smooth operation: The concentricity of the pump shaft and excellent dynamic and static balance of the impeller ensure smooth operation and vibration.
Drip proof: Hard alloy seals made of different materials ensure that there is no leakage during the transportation of different media.
Low noise: The water pump supported by two low-noise bearings runs smoothly, with almost no noise except for weak motor noise.
Low failure rate: The structure is simple and reasonable, and the key parts are of high quality; Matching, the working time of the whole machine is greatly improved.
Easy maintenance: Replacing seals and bearings is simple and convenient.
More land saving: The exit can be arranged in three directions: left, right, and up, which is convenient for pipeline layout and installation, saving space.
IRG type hot water pipeline centrifugal pumpUse installation
IRG type hot water pipeline centrifugal pumpIt is a vertical structure with the same inlet and outlet diameters and located on the same centerline. It can be installed in pipelines like a valve, with a compact and beautiful appearance, small footprint, and low building investment. If a protective cover is added, it can be used outdoors.
IRG type hot water pipeline centrifugal pumpThe impeller is directly installed on the extended shaft of the motor, with a short axial dimension and compact structure. The pump and motor bearings are reasonably configured, which can effectively balance the radial and axial loads generated by the pump operation, ensuring smooth operation, low vibration, and low noise of the pump.
3. The shaft seal adopts mechanical seal or a combination of mechanical seals, using imported titanium alloy sealing rings, medium-sized high-temperature resistant mechanical seals, and hard alloy materials for wear-resistant seals, which can effectively extend the service life of mechanical seals.
4. Easy installation and maintenance, no need to disassemble the pipeline system, just remove the pump coupling nut to extract all rotor components.
5. Pumps can be operated in series or parallel according to the requirements of flow rate and head.
6. Vertical and horizontal installation of pumps can be adopted according to the requirements of pipeline layout.
Meaning of IRG type hot water pipeline centrifugal pump model
Structure of IRG type hot water pipeline centrifugal pump
|
1、 Product Overview
The IRG type hot water circulation pump is a new generation of energy-saving and environmentally friendly vertical hot water centrifugal pump developed independently based on the ISG type. This series of pumps has excellent performance, high reliability, long service life, reasonable structure, and beautiful appearance, which is at the industry level.
2、 Purpose:
The IRG type hot water circulation pump is suitable for high-temperature hot water pressurized circulation and transportation in metallurgy, chemical industry, textile, wood processing, papermaking, as well as boilers, bathrooms, hotels and other places, and for urban housing heating circulation pumps. The operating temperature is below 105 ℃.
3、 Working conditions:
1. The suction pressure is ≤ 1.6MPa, or the maximum working pressure of the pump system is ≤ 1.6MPa, that is, the pump suction inlet pressure+pump head is ≤ 1.6MPa, and the pump static pressure test pressure is 2.5MPa. Please specify the system working pressure when ordering. When the working pressure of the pump system is greater than 1.6MPa, it should be separately stated when ordering, so that the overcurrent and connection parts of the pump can be made of cast steel materials during manufacturing.
2. Environmental temperature<40 ℃, relative humidity<95%.
3. The volume content of solid particles in the conveyed medium shall not exceed 0.1% of the unit volume, and the particle size shall be less than 0.2mm.
Note: If the medium used is with small particles, please indicate it when ordering so that the manufacturer can use wear-resistant mechanical seals.
4、 Product features:
Smooth operation: The concentricity of the pump shaft and excellent dynamic and static balance of the impeller ensure smooth operation and vibration.
Drip proof: Hard alloy seals made of different materials ensure that there is no leakage during the transportation of different media.
Low noise: The water pump supported by two low-noise bearings runs smoothly, with almost no noise except for weak motor noise.
Low failure rate: The structure is simple and reasonable, and the key parts are of high quality; Matching, the working time of the whole machine is greatly improved.
Easy maintenance: Replacing seals and bearings is simple and convenient.
More land saving: The exit can be arranged in three directions: left, right, and up, which is convenient for pipeline layout and installation, saving space.
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| Parameters of single-stage single suction pipeline clear water centrifugal pump |
|
model |
traffic |
head
（m） |
efficiency
（%） |
speed
（r/min） |
Motor power
（kw） |
（m3/h） |
（L/s） |
| 15-80 |
1.1
1.5
2.0 |
0.30
0.42
0.55 |
8.5
8.0
7.0 |
26
34
34 |
2800 |
0.18 |
| 20-110 |
1.8
2.5
3.3 |
0.50
0.69
0.91 |
16.0
15.0
13.5 |
25
34
35 |
2800 |
0.37 |
| 20-125 |
1.8
2.5
3.3 |
0.50
0.69
0.91 |
21.0
20.0
18.6 |
28
35
34 |
2800 |
0.75 |
| 20-160 |
1.8
2.5
3.3 |
0.50
0.69
0.91 |
33
32
30 |
19
25
23 |
2900 |
1.5 |
| 25-110 |
2.8
4.0
5.2 |
0.78
1.11
1.44 |
16.0
15.0
13.5 |
34
42
41 |
2900 |
0.55 |
| 25-125 |
2.8
4.0
5.2 |
0.78
1.11
1.44 |
20.6
20.0
18.0 |
28
36
35 |
2900 |
0.75 |
| 25-125A |
2.5
3.6
4.6 |
0.69
1.00
1.28 |
17.0
16.0
14.4 |
29
35
31 |
2900 |
0.75 |
| 25-160 |
2.8
4.0
5.2 |
0.78
1.11
1.44 |
33
32
30 |
24
32
33 |
2900 |
1.5 |
| 25-160A |
2.6
3.7
4.9 |
0.12
1.03
1.36 |
29
28
26 |
27
31
29 |
2900 |
1.1 |
| 32-100 |
3.5
4.5
5.3 |
0.97
1.24
1.47 |
14.5
12.5
11 |
35
40
38 |
2900 |
0.55 |
| 30-125 |
3.5
5.0
6.5 |
0.97
1.39
1.80 |
22
20
18 |
40
44
42 |
2900 |
0.75 |
| 32-125A |
3.1
4.5
5.8 |
0.86
1.25
1.61 |
17.6
16.0
14.4 |
39
43
40 |
2900 |
0.55 |
| 32-160 |
4.4
6.3
8.3 |
1.22
1.75
2.32 |
33
32
30 |
40
44
42 |
2900 |
1.5 |
| 32-160A |
2.8
4.0
5.2 |
0.78
1.11
1.44 |
27
25
21 |
31
34
32 |
2900 |
1.1 |
| 32-200 |
3.1
4.5
5.8 |
0.86
1.25
1.61 |
50.5
50.0
48.0 |
28
32
30 |
2900 |
3 |
| 32-200A |
2.8
4.0
5.2 |
0.78
1.11
1.44 |
44.6
44
42.7 |
34
40
42 |
2900 |
2.2 |
| 32-160（1） |
4.4
6.3
8.3 |
1.22
1.75
2.32 |
33.2
32
30.2 |
34
40
42 |
2900 |
2.2 |
| 32-200（1） |
4.4
6.3
8.3 |
1.22
1.75
2.32 |
50.5
50.0
48.0 |
26
33
35 |
2900 |
4 |
| 40-100 |
4.4
6.3
8.3 |
1.22
1.75
2.31 |
13.2
12.5
11.3 |
48
54
53 |
2900 |
0.55 |
| 40-100A |
3.9
5.6
7.4 |
1.08
1.56
2.06 |
10.6
10.0
9.0 |
48
52
50 |
2900 |
0.37 |
| 40-125 |
4.4
6.3
8.3 |
1.22
1.75
2.31 |
21
20
18 |
41
46
43 |
2900 |
1.1 |
| 40-125A |
3.9
5.6
7.4 |
1.08
1.56
2.06 |
17.6
16
14.4 |
40
45
41 |
2900 |
0.75 |
| 40-160 |
4.4
6.3
8.3 |
1.22
1.75
2.31 |
33
32
30 |
35
40
40 |
2900 |
2.2 |
| 40-160A |
4.1
5.9
7.8 |
1.14
1.64
2.17 |
29
28
26.3 |
34
39
39 |
2900 |
1.5 |
| 40-160B |
3.8
5.5
7.2 |
1.06
1.53
2.0 |
25.5
24
22.5 |
34
38
37 |
2900 |
1.1 |
| 40-200 |
4.4
6.3
8.3 |
1.22
1.75
2.31 |
51
50
48 |
26
33
32 |
2900 |
4 |
| 40-200A |
4.1
5.9
7.8 |
1.14
1.64
2.17 |
45
44
42 |
26
31
32 |
2900 |
3 |
| 40-200B |
3.7
5.3
7.0 |
1.03
1.47
1.94 |
38
36
34.5 |
25
29
27 |
2900 |
2.2 |
| 40-250 |
4.4
6.3
8.3 |
1.22
1.75
2.31 |
82
80
74 |
24
28
28 |
2900 |
7.5 |
| 40-250A |
4.1
5.9
7.8 |
1.14
1.64
2.17 |
72
70
65 |
24
28
27 |
2900 |
5.5 |
| 40-250B |
3.8
5.5
7.0 |
1.06
1.53
1.94 |
61.5
60
56 |
23
27
26 |
2900 |
4 |
| 40-100（1） |
8.8
12.5
16.3 |
2.44
3.47
4.53 |
13.2
12.5
11.3 |
55
62
60 |
2900 |
1.1 |
| 40-100（1）A |
8.0
11.0
14.5 |
2.22
3.05
4.03 |
10.6
10.0
9.0 |
57
60
59 |
2900 |
0.75 |
| 40-125（1） |
8.8
12.5
16.3 |
2.44
3.47
4.53 |
21.2
20.0
17.8 |
49
58
57 |
2900 |
1.5 |
| 40-125（1）A |
8.0
11.0
14.5 |
2.22
3.05
4.03 |
17.0
16.0
14.0 |
53
57
55 |
2900 |
1.1 |
| 40-160（1） |
8.8
12.5
16.3 |
2.44
3.47
4.53 |
33
32
30 |
45
52
51 |
2900 |
3 |
| 40-160（1）A |
8.2
11.7
15.2 |
2.28
3.25
4.22 |
29
28
26 |
44
51
50 |
2900 |
2.2 |
| 40-160（1）B |
7.3
10.4
13.5 |
2.38
2.89
3.75 |
23
22
20.5 |
50 |
2900 |
1.5 |
| 40-200（1） |
8.8
12.5
16.3 |
2.44
3.47
4.53 |
51.2
50
48 |
38
46
46 |
2900 |
5.5 |
| 40-200（1）A |
8.3
11.7
15.3 |
2.31
3.25
4.25 |
45.0
44
42 |
37
45
45 |
2900 |
4 |
| 40-200（1）B |
7.5
10.6
13.8 |
2.08
2.94
3.83 |
37
36
34 |
44 |
2900 |
3 |
| 40-250（1） |
8.8
12.5
16.3 |
2.44
3.47
4.53 |
81.2
80
77.5 |
31
38
40 |
2900 |
11 |
| 40-250（1）A |
8.2
11.6
15.2 |
2.28
3.22
4.22 |
71.0
70
68 |
38 |
2900 |
7.5 |
| 40-250（1）B |
7.6
10.8
14 |
2.11
3.0
3.89 |
61.4
60
58 |
37 |
2900 |
5.5 |
| 40-250（1）C |
7.1
10.0
13.1 |
1.97
2.78
3.64 |
53.2
52
50.4 |
36 |
2900 |
5.5 |
| 50-100 |
8.8
12.5
16.3 |
2.44
3.47
4.53 |
13.6
12.5
11.3 |
55
62
60 |
2900 |
1.1 |
| 50-100A |
8
11
14.5 |
2.22
3.05
4.03 |
11
10
9
|
60 |
2900 |
0.75 |
| 50-125 |
8.8
12.5
16.3 |
2.44
3.74
4.53 |
21.5
20
17.8 |
49
58
57 |
2900 |
1.5 |
| 50-125A |
8
11
14.5 |
2.22
3.05
4.03 |
17
16
14 |
57 |
2900 |
1.1 |
| 50-160 |
8.8
12.5
16.3 |
2.44
3.47
4.53 |
33
32
30 |
45
52
51 |
2900 |
3 |
| 50-160A |
8.2
11.7
15.2 |
2.28
3.25
4.22 |
29
28
26 |
44
51
50 |
2900 |
2.2 |
| 50-160B |
7.3
10.4
13.5 |
2.38
2.89
3.75 |
23
22
20.5 |
50 |
2900 |
1.5 |
| 50-200 |
8.8
12.5
16.3 |
2.44
3.47
4.53 |
52
50
48 |
38
46
46 |
2900 |
5.5 |
| 50-200A |
8.3
11.7
15.3 |
2.31
3.25
4.25 |
45.8
44
42 |
37
45
45 |
2900 |
4 |
| 50-200B |
7.5
10.6
13.8 |
2.08
2.94
3.83 |
37
36
34 |
44 |
2900 |
3 |
| 50-250 |
8.8
12.5
16.3 |
2.44
3.47
4.53 |
82
80
77.5 |
29
38
40 |
2900 |
11 |
| 50-250A |
8.2
11.6
15.2 |
2.28
3.22
4.22 |
71.5
70
68 |
38
|
2900 |
75 |
| 50-250B |
7.6
10.8
14 |
2.11
3.0
3.89 |
61.4
60
58 |
37 |
2900 |
5.5 |
| 50-250C |
7.1
10.0
13.1 |
1.97
2.78
3.64 |
53.2
52
504 |
36 |
2900 |
5.5 |
| 50-100（1） |
17.5
25
32.5 |
4.86
6.94
9.03 |
13.7
12.5
10.5 |
67
69
69 |
2900 |
1.5 |
| 50-100（1）A |
15.6
22.3
29 |
4.3
6.19
8.1 |
11
10
8.4 |
65
67
68 |
2900 |
1.1 |
| 50-125（1） |
17.5
25
32.5 |
4.86
6.94
9.03 |
21.5
20
18 |
60
68
67 |
2900 |
3 |
| 50-125（1）A |
15.6
22.3
29 |
4.33
6.19
8.1 |
17
16
13.6 |
58
66
65 |
2900 |
2.2 |
| 50-160（1） |
17.5
25
32.5 |
4.68
6.94
9.03 |
34.4
32
27.5 |
54
63
60 |
2900 |
4 |
| 50-160（1）A |
16.4
23.4
30.4 |
4.56
6.5
8.44 |
30
28
24 |
54
62
59 |
2900 |
3 |
| 50-160（1）B |
15.0
21.6
28 |
4.17
6.0
7.78 |
26
24
20.6 |
28 |
2900 |
2.2 |
| 50-200（1） |
17.5
25
32.5 |
4.86
6.94
9.03 |
52.7
50
45.5 |
49
58
59 |
2900 |
7.5 |
| 50-200（1）A |
16.4
23.5
30.5 |
4.56
6.53
8.47 |
46.4
44
40 |
48
57
58 |
2900 |
5.5 |
| 50-200（1）B |
15.2
21.8
28.3 |
4.22
6.06
7.86 |
40
38
34.5 |
55 |
2900 |
4 |
| 50-250（1） |
17.5
25
32.5 |
4.86
6.94
9.03 |
82
80
76.5 |
39
50
52 |
2900 |
15 |
| 50-250（1）A |
16.4
23.4
30.5
|
4.56
6.5
8.47
|
71.5
70
67
|
39
50
52
|
2900 |
11 |
| 50-250（1）B |
15
21.6
28
|
4.17
6.0
7.78
|
61
60
57.4
|
38
49
54
|
2900 |
7.5 |
| 50-315（1） |
17.5
25
32.5
|
4.86
6.94
9.03
|
128
125
122
|
30
40
44
|
2900 |
30
|
| 50-315（1）A |
16.6
23.7
31
|
4.61
6.58
8.6
|
115
113
110
|
30
40
44
|
2900 |
22 |
| 50-315（1）B |
15.7
22.5
29.2
|
4.36
6.25
8.0
|
103
101
98
|
39 |
2900 |
18.5 |
| 50-315（1）C |
14.4
20.6
26.8
|
4.0
5.72
7.44
|
86
85
83
|
38 |
2900 |
15 |
| 65-100 |
17.5
25
32.5
|
4.86
6.94
9.03
|
13.7
12.5
10.5
|
67
69
69
|
2900 |
1.5 |
| 65-100A |
15.6
22.3
29
|
4.3
6.19
8.1
|
11
10
8.4
|
65
67
68
|
2900 |
1.1 |
| 65-125 |
17.5
25
32.5
|
4.86
6.94
9.03
|
21.5
20
18
|
60
68
67
|
2900 |
3 |
| 65-125A |
15.6
22.3
29
|
4.33
6.19
8.1
|
17
16
14.4
|
58
66
65
|
2900 |
2.2 |
| 65-160 |
17.5
25
32.5
|
4.86
6.94
9.03
|
34.4
32
27.5
|
54
63
60
|
2900 |
4 |
| 65-160A |
16.4
23.4
30.4
|
4.56
6.5
8.44
|
30
28
24
|
54
62
59
|
2900 |
3 |
| 65-160B |
15.0
21.6
28
|
4.17
6.0
7.78
|
26
24
20.6
|
58 |
2900 |
2.2 |
| 65-200 |
17.5
25
32.5
|
4.86
6.94
9.03
|
52.7
50
45.5
|
49
58
59
|
2900 |
7.5 |
| 65-200A |
16.4
23.5
30.5
|
4.56
6.53
8.47
|
46.4
44
40
|
48
57
58
|
2900 |
5.5 |
| 65-200B |
15.2
21.8
28.3
|
4.22
6.06
7.86
|
40
38
34.5
|
55 |
2900 |
4 |
| 65-250 |
17.5
25
32.5
|
4.86
6.94
9.03
|
82
80
76.5
|
39
50
52
|
2900 |
15 |
| 65-250A |
16.4
23.4
30.5
|
4.56
6.5
8.47
|
71.5
70
67
|
39
50
52
|
2900 |
11 |
| 65-250B |
15
21.6
28
|
4.17
6.0
7.78
|
61
60
57.4
|
38
49
54
|
2900 |
7.5 |
| 65-315 |
17.5
25
32.5
|
4.86
6.94
9.03
|
127
125
122
|
32
40
44
|
2900 |
30 |
| 65-315A |
16.6
23.7
31
|
4.61
6.58
8.6
|
115
113
110
|
32
40
44
|
2900 |
22 |
| 65-315B |
15.7
22.5
29.2
|
4.36
6.25
8.0
|
103
101
98
|
39 |
2900 |
18.5 |
| 65-315C |
14.4
20.6
26.8
|
4.0
5.72
7.44
|
86
85
83
|
38 |
2900 |
15
|
| 65-100（1） |
35
50
65
|
9.72
13.9
18.1
|
13.8
12.5
10
|
67
73
70
|
2900 |
3 |
| 65-100（1）A |
31.3
44.7
58
|
8.7
12.4
16.1
|
11
10
8
|
66
72
69
|
2900 |
2.2 |
| 65-125（1） |
35
50
65
|
9.72
13.9
18.1
|
22
20
17
|
67
72.5
70
|
2900 |
5.5 |
| 65-125（1）A |
31.5
45
58
|
8.7
12.5
16.1
|
17.5
16
13.6
|
66
71
69
|
2900 |
4 |
| 65-160（1） |
35
50
65
|
9.72
13.9
18.1
|
35
32
28
|
63
71
70
|
2900 |
7.5 |
| 65-160（1）A |
32.7
46.7
61
|
9.1
13.0
16.9
|
30.6
28
24
|
62
70
69
|
2900 |
5.5 |
| 65-160（1）B |
30.3
43.3
56.3
|
8.4
12.0
15.6
|
26
24
21
|
69 |
2900 |
4 |
| 65-200（1） |
35
50
65
|
9.72
13.9
18.1
|
53.5
50
46
|
55
67
68
|
2900 |
15 |
| 65-200（1）A |
32.8
47
61
|
9.1
13.1
16.9
|
47
44
40
|
54
66
67
|
2900 |
11 |
| 65-200（1）B |
30.5
43.5
56.6
|
8.5
12.1
15.7
|
40.6
38
33.4
|
65 |
2900 |
7.5 |
| 65-250（1） |
35
50
65
|
9.72
13.9
18.1
|
83
80
72
|
52
59
60
|
2900 |
22 |
| 65-250（1）A |
32.5
43.3
46.7
|
9.0
13.0
16.9
|
73
70
63
|
52
59
60
|
2900 |
18.5 |
| 65-250（1）B |
30
56
61
|
8.3
12.0
15.6
|
62
60
54
|
58 |
2900 |
15 |
| 65-315（1） |
35
50
65
|
9.72
13.9
18.1
|
128
125
121
|
44
54
57
|
2900 |
37 |
| 65-315（1）A |
32.5
46.5
60.5
|
9.0
12.9
16.8
|
112.6
110
106.4
|
43
54
57
|
2900 |
30 |
| 65-315（1）B |
31
44.5
58
|
8.6
12.4
16.1
|
102.5
100
98
|
53 |
2900 |
30 |
| 65-315（1）C |
29
41
53.6
|
8.1
11.4
14.9
|
87
85
83
|
51 |
2900 |
22 |
| 80-100 |
35
50
65
|
9.72
13.9
18.1
|
13.8
12.5
10
|
67
73
70
|
2900 |
3 |
| 80-100A |
31.3
44.7
58
|
8.7
12.5
16.1
|
11
10
8
|
66
72
69
|
2900 |
2.2 |
| 80-125 |
35
50
65
|
9.72
13.9
18.1
|
22
20
17
|
67
72.5
70
|
2900 |
5.5 |
| 80-125A |
31.3
45
58
|
8.7
12.5
16.1
|
17.5
16
13.6
|
66
71
69
|
2900 |
4 |
| 80-160 |
35
50
65
|
9.72
13.9
18.1
|
35
32
28
|
63
71
70
|
2900 |
7.5 |
| 80-160A |
32.7
46.7
61
|
9.1
13.0
16.9
|
30.6
28
24
|
62
70
69
|
2900 |
5.5 |
| 80-160B |
30.3
43.3
56.3
|
8.4
12.0
15.6
|
26
24
21
|
69 |
2900 |
4 |
| 80-200 |
35
50
65
|
9.72
13.9
18.1
|
53.5
50
46
|
55
67
68
|
2900 |
15 |
| 80-200A |
32.8
47
61
|
9.1
13.1
16.9
|
47
44
40
|
54
66
67
|
2900 |
11 |
| 80-200B |
30.5
43.5
56.6
|
8.5
12.1
15.7
|
40.6
38
33.4
|
65 |
2900 |
7.5 |
| 80-250 |
35
50
65
|
9.72
13.9
18.1
|
83
80
72
|
52
59
60
|
2900 |
22 |
| 80-250A |
32.5
46.7
61
|
9.0
13.0
16.9
|
73
70
63
|
52
59
60
|
2900 |
18.5 |
| 80-250B |
30
43.3
56
|
8.3
12.0
15.6
|
62
60
54
|
58 |
2900 |
15 |
| 80-315 |
35
50
65
|
9.72
13.9
18.1
|
128
125
122
|
43
54
57
|
2900 |
37 |
| 80-315A |
32.5
46.5
60.5
|
9.0
12.9
16.8
|
112.6
110
107.4
|
43
54
57
|
2900 |
30 |
| 80-315B |
31
44.5
58
|
8.6
12.4
16.1
|
102.5
100
98
|
53 |
2900 |
30 |
| 80-315C |
29
41
53.6
|
8.1
11.4
14.9
|
98
85
83
|
51 |
2900 |
22 |
| 80-350 |
35
50
65
|
9.72
13.9
18.1
|
153.6
150
142
|
55
66
67
|
2900 |
55 |
| 80-350A |
31
44.5
58
|
8.6
12.4
16.1
|
145.6
142
134.8
|
65 |
2900 |
45 |
| 80-350B |
29
41
53.6
|
8.1
11.4
14.9
|
138.6
135
127.8
|
63 |
2900 |
37 |
| 80-100（1） |
70
100
130
|
19.4
27.8
36.1
|
13.6
12.5
11
|
66
76
75
|
2900 |
5.5 |
| 80-100（1）A |
62.6
89
116
|
17.4
24.7
32.2
|
11
10
8.8
|
64
74
74
|
2900 |
4 |
| 80-125（1） |
70
100
130
|
19.4
27.8
36.1
|
23.5
20
14
|
70
76
65
|
2900 |
11 |
| 80-125（1）A |
62.6
89
116
|
17.4
24.7
32.2
|
19
16
11
|
68
74
65
|
2900 |
7.5 |
| 80-160（1） |
70
100
130
|
19.4
27.8
36.1
|
36.5
32
24
|
70
76
65
|
2900 |
15 |
| 80-160（1）A |
65.4
93.5
121.6
|
18.2
26.0
33.8
|
32
28
21
|
68
74
67
|
2900 |
11 |
| 80-160（1）B |
60.6
86.6
112.6
|
16.8
24.1
31.3
|
26
24
18
|
72 |
2900 |
7.5 |
| 80-200（1） |
70
100
130
|
19.4
27.8
36.1
|
54
50
42
|
65
74
73
|
2900 |
22 |
| 80-200（1）A |
65.4
93.5
121.6
|
18.2
26.0
33.8
|
47.5
44
37
|
67
73
72
|
2900 |
18.5 |
| 80-200（1）B |
61
87
113
|
16.9
24.2
31.4
|
41
38
32
|
71
|
2900 |
15 |
| 80-250（1） |
70
100
130
|
19.4
27.8
36.1
|
87
80
68
|
62
69
68
|
2900 |
37 |
| 80-250（1）A |
65.4
93.5
121.6
|
18.2
26.0
33.8
|
76
70
59.5
|
61
68
67
|
2900 |
30 |
| 80-250（1）B |
61
87
113
|
16.9
24.2
31.4
|
65
60
51
|
66
|
2900 |
22 |
| 80-315（1） |
70
100
130
|
19.4
27.8
36.1
|
132
125
114
|
55
66
67
|
2900 |
75 |
| 80-315（1）A |
66.5
95
123.6
|
18.5
26.4
34.3
|
119
113
103
|
55
66
67
|
2900 |
55 |
| 80-315（1）B |
63
90
117
|
17.5
25
32.5
|
106.6
101
92
|
65 |
2900 |
45 |
| 80-315（1）C |
58
82
107
|
16.1
22.8
29.7
|
90
85
76
|
63 |
2900 |
37 |
| 100-100 |
70
100
130
|
19.4
27.8
36.1
|
13.6
12.5
11
|
66
76
75
|
2900 |
5.5 |
| 100-100A |
62.6
89
116
|
17.4
47
32.2
|
11
10
8.8
|
64
74
74
|
2900 |
4 |
| 100-125 |
70
100
130
|
19.4
27.8
36.1
|
23.5
20
14
|
70
76
65
|
2900 |
11 |
| 100-125A |
62.6
89
116
|
17.4
24.7
32.2
|
19
16
11
|
68
74
63
|
2900 |
7.5 |
| 100-160 |
70
100
130
|
19.4
27.8
36.1
|
36.5
32
24
|
70
76
65
|
2900 |
15 |
| 100-160A |
65.4
93.5
121.6
|
18.2
26.0
33.8
|
32
28
21
|
68
74
67
|
2900 |
11 |
| 100-160B |
60.6
86.6
112.5
|
16.8
24.1
31.3
|
27
24
18
|
72 |
2900 |
7.5 |
| 100-200 |
70
100
130
|
19.4
27.8
36.1
|
54
50
42
|
65
74
73
|
2900 |
22 |
| 100-200A |
65.4
93.5
121.6
|
18.2
26.0
33.8
|
47.5
44
37
|
64
73
72
|
2900 |
18.5 |
| 100-200B |
61
87
113
|
16.9
24.2
31.4
|
41
38
32
|
71 |
2900 |
15 |
| 100-250 |
70
100
130
|
19.4
27.8
36.1
|
87
80
68
|
62
69
68
|
2900 |
37 |
| 100-250A |
65.4
93.5
121.6
|
18.2
26.0
33.8
|
76
70
59.5
|
61
68
67
|
2900 |
30 |
| 100-250B |
61
87
113
|
16.9
24.2
31.4
|
65
60
51
|
66 |
2900 |
22 |
| 100-315 |
70
100
130
|
19.4
27.8
36.1
|
132
125
114
|
55
66
67
|
2900 |
75 |
| 100-315A |
66.5
95
123.6
|
18.5
26.4
34.3
|
119
113
103
|
65
66
67
|
2900 |
55 |
| 100-315B |
63
90
117
|
17.5
25
32.5
|
106.6
101
92
|
65 |
2900 |
45 |
| 100-315C |
58
82
107
|
16.1
27.8
29.7
|
90
85
76
|
63 |
2900 |
37 |
| 100-350 |
60
100
120
|
16.7
27.8
33.3
|
153.6
150
142
|
72
57
74
|
2900 |
90 |
| 100-350A |
61
87
113
|
16.9
24.2
31.4
|
145.6
142
134
|
75 |
2900 |
75 |
| 100-350B |
58
82
107
|
16.1
22.8
29.7
|
138.6
135
127
|
75 |
2900 |
55 |
| 100-100（1） |
96
160
192
|
26.7
44.4
53.3
|
14
12.5
10
|
64
73
70
|
2900 |
11 |
| 100-125（1） |
96
160
192
|
26.7
44.4
53.3
|
24
20
14
|
62
74
69
|
2900 |
15 |
| 100-125（1）A |
84
140
168
|
23.3
39
46.7
|
20
17
12
|
64
72
68
|
2900 |
11 |
| 100-160（1） |
96
160
192
|
26.7
44.4
53.3
|
36
32
27
|
69
79
75
|
2900 |
22 |
| 100-160（1）A |
84
140
168
|
23.3
39
46.7
|
32
28
23.5
|
66
76
72
|
2900 |
18.5 |
| 100-200（1） |
96
160
192
|
26.7
44.4
53.3
|
53
50
45
|
69
79
78
|
2900 |
37 |
| 100-200（1）A |
84
140
168
|
23.3
39
46.7
|
48
45
40
|
64
74
73
|
2900 |
30 |
| 100-200（1）B |
60
100
120
|
16.7
27.8
33.3
|
43
40
36
|
72 |
2900 |
22 |
| 100-250（1） |
96
160
192
|
26.7
44.4
53.3
|
83
80
72
|
65
77
74
|
2900 |
55 |
| 100-250（1）A |
84
140
168
|
23.3
39
46.7
|
75
72
65
|
60
72
69
|
2900 |
45 |
| 100-250（1）B |
60
100
120
|
16.7
27.8
33.3
|
68
65
58
|
70 |
2900 |
37 |
| 125-100 |
96
160
192
|
26.7
44.4
53.3
|
13
12.5
12
|
82 |
2900 |
11 |
| 125-100A |
86
143
172
|
23.9
39.7
47.8
|
10.4
10
9.6
|
77 |
2900 |
7.5 |
| 125-125 |
96
160
192
|
26.7
44.4
53.3
|
22.6
20
9.6
|
80 |
2900 |
15 |
| 125-125A |
86
143
172
|
23.9
39.7
47.8
|
18
16
13.6
|
77 |
2900 |
11 |
| 125-160 |
96
160
192
|
26.7
44.4
53.3
|
36
32
28
|
78 |
2900 |
22 |
| 125-160A |
90
150
180
|
25
41.7
50
|
31.5
28
24.5
|
76 |
2900 |
18.5 |
| 125-160B |
83
138
166
|
21.7
38.3
46.1
|
27
24
21
|
73 |
2900 |
15 |
| 125-200 |
96
160
192
|
26.7
44.4
53.3 |
55
50
46 |
77
|
2900 |
37 |
| 125-200A |
90
150
180
|
25
41.7
50
|
48.4
44
40.5
|
76 |
2900 |
30 |
| 125-200B |
83
138
166
|
31.7
38.3
46.1
|
41.3
37.5
34.5
|
75 |
2900 |
22 |
| 125-250 |
96
160
192
|
26.7
4.4
53.3
|
87
80
73
|
75 |
2900 |
55 |
| 125-250A |
90
150
180
|
25
41.7
50
|
84
76
70
|
74 |
2900 |
45 |
| 125-250B |
83
138
166
|
21.7
38.3
46.1
|
65
60
55
|
73 |
2900 |
37 |
| 125-315 |
96
160
192
|
26.7
44.7
53.3
|
133
125
119
|
70 |
2900 |
90 |
| 125-315A |
90
150
180
|
25
41.7
50
|
117
110
104.6
|
70 |
2900 |
75 |
| 125-315B |
86
143
172
|
23.9
39.7
47.8
|
106.4
100
95.2
|
69 |
2900 |
75 |
| 125-315C |
80.5
134
161
|
22.4
37.2
44.7
|
96
88
86
|
67 |
2900 |
55 |
| 150-125 |
96
160
192
|
26.7
44.4
53.3
|
22.6
20
17
|
66
76
76
|
2900 |
15 |
| 150-125A |
90
150
180
|
25
41.7
50
|
18
16
13.6
|
77 |
2900 |
11 |
| 150-160 |
96
160
192
|
26.7
44.4
53.3
|
36
32
27
|
75 |
2900 |
22 |
| 150-160A |
90
150
180
|
25
41.7
50
|
32
28
23.5
|
76 |
2900 |
18.5 |
| 150-160B |
84
140
168
|
23.3
39
46.7
|
27
24
21
|
73 |
2900 |
15 |
| 150-200 |
140
200
260
|
38.9
55.6
72.2
|
13.8
12.5
10.6
|
68
78
78
|
1450 |
15 |
| 150-200A |
125
176
232.5
|
34.7
49.7
64.6
|
11
10
8.5
|
66
76
76
|
1450 |
11 |
| 150-200B |
110
160
207
|
31
44.4
57.6
|
9.2
8
6.8
|
75 |
1450 |
7.5 |
| 150-250 |
140
200
260
|
38.9
55.6
72.2
|
21.8
20
17
|
73
79
77
|
1450 |
18.5 |
| 150-250A |
129
184.4
240
|
35.8
51.2
66.7
|
18.5
17
14.4
|
72
78
76
|
1450 |
15 |
| 150-250B |
117
167
217.5
|
32.5
46.4
60.4
|
15.2
14
12
|
76 |
1450 |
11 |
| 150-315 |
140
200
260
|
38.9
55.6
72.2
|
33.8
32
28
|
70
78
73
|
1450 |
30 |
| 150-315A |
131
187
243
|
36.4
51.9
67.5
|
29.5
28
24.5
|
69
77
77
|
1450 |
22 |
| 150-315B |
121
173
225
|
33.5
48.1
62.5
|
25
24
21
|
76
|
1450 |
18.5 |
| 150-350 |
96
160
192
|
26.7
44.4
53.3
|
153.6
150
142.8
|
80 |
2900 |
110 |
| 150-350A |
90
150
180
|
25
41.7
50
|
145.6
142
134.8
|
70 |
2900 |
90 |
| 150-350B |
84
140
168
|
23.3
39
46.7
|
138.6
135
127.8
|
65
76
74
|
2900 |
75 |
| 150-400 |
140
200
260
|
38.9
55.6
72.2
|
53
50
44
|
68
75
71
|
1450 |
45 |
| 150-400A |
131
187
243
|
36.4
51.9
67.5
|
46.6
44
38.3
|
67
74
70
|
1450 |
37 |
| 150-400B |
122
174
226.5
|
33.9
48.3
62.9
|
40
38
33
|
73 |
1450 |
30 |
| 150-400C |
112
160
208
|
31.1
44.4
57.8
|
34
32
28
|
71 |
1450 |
22 |
| 150-250（1） |
120
200
240
|
33.3
55.6
66.7
|
87
80
72
|
65
76
74
|
2900 |
75 |
150-250（1）A
|
112
187
224
|
31.1
51.9
62.2
|
76
70
63
|
64
75
73
|
2900 |
55 |
| 150-250（1）B |
104
173
208
|
28.9
48.1
57.8
|
65
60
54
|
63
74
72
|
2900 |
45 |
| 150-315（1） |
120
200
240
|
33.3
55.6
66.7
|
133
125
120
|
58
73
75
|
2900 |
110 |
| 150-315（10）A |
112
187
224
|
31.1
51.9
62.2
|
116
110
105
|
57
72
74
|
2900 |
90 |
| 150-315（1）B |
104
173
208
|
28.9
48.1
57.8
|
100
95
91
|
55
70
72
|
2900 |
75 |
| 200-200 |
140
200
260
|
38.9
55.6
72.2
|
13.8
12.5
10.6
|
68
78
78
|
1450 |
15 |
| 200-200A |
125
179
232.5
|
34.7
49.7
64.6
|
11
10
8.5
|
66
76
76
|
1450 |
11 |
| 200-250 |
140
200
260
|
38.9
55.6
72.2
|
21.8
20
17
|
73
79
77
|
1450 |
18.5 |
| 200-250A |
129
184.4
240
|
35.8
51.2
66.7
|
18.5
17
14.4
|
72
78
76
|
1450 |
15 |
| 200-250B |
117
167
217.5
|
32.5
46.4
60.4
|
15.2
14
12
|
76
|
1450 |
11 |
| 200-315 |
140
200
260
|
38.9
55.6
72.2
|
33.8
32
28
|
70
78
78
|
1450 |
30 |
| 200-315A |
131
189
243
|
36.4
51.9
67.5
|
29.5
28
24.5
|
69
77
77
|
1450 |
22 |
| 200-315B |
121
173
225
|
33.6
48.1
62.5
|
25
24
21
|
76
|
1450 |
18.5 |
| 200-400 |
140
200
260
|
38.9
55.6
72.2
|
53
50
44
|
68
75
71
|
1450 |
45 |
| 200-400A |
131
187
243
|
36.4
51.9
67.5
|
46.6
44
38.3
|
67
74
70
|
1450 |
37 |
| 200-400B |
122
174
226.5
|
33.9
48.6
62.9
|
40
38
33
|
73 |
1450 |
30 |
| 200-400C |
112
160
208
|
31.3
44.4
57.8
|
34
32
28
|
71 |
1450 |
22 |
| 200-200（1） |
280
400
520
|
77.8
111.1
114
|
13.4
12.5
10.5
|
70
80
79
|
1450 |
22 |
| 200-200（1）A |
250
358
465
|
69.4
99.4
129.2
|
10.7
10
8.5
|
68
78
77
|
1450 |
18.5 |
| 200-250（1） |
280
400
520
|
77.8
111.4
114
|
22.2
20
14
|
75
80
72
|
1450 |
30 |
| 200-250（1）A |
250
358
465
|
69.4
99.6
129.2
|
18
14
11.2
|
73
78
70
|
1450 |
22 |
| 200-250（1）B |
226
322
419
|
62.8
89.4
116.4
|
14.4
13
7.3
|
70
75
67
|
1450 |
18.5 |
| 200-315（1） |
280
400
520
|
77.8
111.4
144
|
36
32
26
|
73
80
75
|
1450 |
55 |
| 200-315（1）A |
262
374
486
|
72.8
103.9
135
|
31.5
28
23
|
72
79
74
|
1450 |
45 |
| 200-315（1）B |
242
346
450
|
67.2
96.1
125
|
27
24
19.5
|
78 |
1450 |
37 |
| 200-400（1） |
280
400
520
|
77.8
111.4
144
|
54.5
50
39
|
75
81
77
|
1450 |
75 |
| 200-400（1）A |
262
374
486
|
72.8
103.9
135
|
48
44
34
|
80 |
14550 |
75 |
| 200-400（1）B |
242
346
450
|
67.2
96.1
125
|
41.4
38
29.6
|
78 |
1450 |
55 |
| 200-400（1）C |
224
320
416
|
62.2
88.9
115.6
|
34.9
32
25
|
76 |
1450 |
45 |
| 250-250 |
350
550
650
|
97.2
152.8
180.5
|
22
20
16
|
78
82
81
|
1450 |
45 |
| 250-250A |
300
500
600
|
83.3
139
166.7
|
18.3
17
14
|
76
80
80
|
1450 |
37 |
| 250-235 |
300
500
600
|
83.3
139
166.7
|
14
12.5
11
|
73
78
70
|
1450 |
22 |
| 250-300 |
300
500
600
|
83.3
139
166.7
|
22
20
16
|
78 |
1450 |
37 |
| 250-315 |
350
550
650
|
97.2
152.8
180.5
|
34
32
28
|
76
80
79
|
1450 |
75 |
| 250-315A |
300
500
600
|
83.3
139
166.7
|
29.5
28
24
|
74
78
77
|
1450 |
55 |
| 250-315B |
260
450
250
|
72.2
125
144.4
|
25
24
20
|
70
74
72
|
1450 |
45 |
| 250-400 |
300
500
600
|
83.3
139
166.7
|
54.5
50
39
|
72 |
1480 |
110 |
| 250-400A |
262
450
521
|
72.7
125
144.7
|
46.6
44
38.3
|
69 |
1480 |
90 |
| 250-500 |
385
550
660
|
106.9
152.8
183.3
|
87
80
68
|
80 |
1480 |
160 |
| 250-500A |
357
510
612
|
99.2
141.7
170
|
76.1
70
59.5
|
78 |
1480 |
132 |
| 250-500B |
329
470
564
|
91.4
130.6
156.7
|
65.2
60
51
|
75 |
1480 |
110 |
| 300-235 |
540
720
900
|
150
200
250
|
20.5
18
15.0
|
77
81
74
|
1450 |
55 |
| 300-235A |
450
600
720
|
125
166
200
|
17.2
15
12.5
|
74
79
77
|
1450 |
45 |
| 300-235B |
420
540
650
|
116.7
150
181
|
14.3
12.8
10.5
|
73
78
70
|
1450 |
37 |
| 300-250 |
540
720
900
|
150
200
250
|
22.5
20
17
|
80
83
84
|
1450 |
55 |
| 300-250A |
450
600
720
|
136
166
200
|
19.5
17
14
|
81 |
1450 |
45 |
| 300-300 |
540
720
900
|
150
200
250
|
32
28
23
|
82 |
1480 |
75 |
| 300-300A |
450
600
720
|
125
166
200
|
27.5
24
20
|
80 |
1480 |
75 |
| 300-300B |
420
540
650
|
116.7
150
181
|
24
21
17
|
78 |
1480 |
55 |
| 300-315 |
540
720
900
|
150
200
250
|
35
32
26
|
84 |
1480 |
90 |
| 300-315A |
460
650
800
|
127.8
180
222
|
31.5
28
23.5
|
80 |
1480 |
75 |
| 300-315B |
420
580
700
|
116.7
161
194
|
27
24
20.0
|
78 |
1480 |
55 |
| 300-380 |
480
720
900
|
133.3
200
250
|
48
44
34
|
84 |
970 |
132 |
| 300-380A |
444
666
833
|
123.3
185
231.4
|
41.4
38
30
|
80 |
970 |
110 |
| 300-380B |
400
614
764
|
113.6
170.6
213.1
|
35
32
25
|
78 |
970 |
90 |
| 300-390 |
540
720
900
|
150
200
250
|
20.5
18
15.5
|
78
81
76
|
980 |
55 |
| 300-390A |
450
600
720
|
126
167
200
|
17.2
15
12.8
|
77
79
75
|
980 |
45 |
| 300-390B |
400
540
650
|
111
150
180
|
14
12.5
11.5
|
74
77
76
|
980 |
37 |
| 300-400 |
450
600
720
|
125
166
200
|
55
50
42.5
|
78 |
1480 |
110 |
| 300-480 |
540
720
900
|
150
200
250
|
31
28
24
|
79
81
80
|
980 |
75 |
| 300-480A |
450
600
720
|
126
166
200
|
27.4
24
20.0
|
78
80
79
|
980 |
75 |
| 300--480B |
400
540
650
|
111
150
180
|
24
21
17
|
79 |
980 |
55 |
| 300-315（1） |
650
950
1200
|
180.6
263.9
333.3
|
36
32
28
|
82
|
1450 |
132 |
| 300-315（1）A |
600
900
1150
|
166.7
250
320
|
32
28
24
|
80
|
1450 |
110 |
| 350-235 |
600
800
960
|
167
222
267
|
14
12.5
10.5
|
80
83
82
|
980 |
37 |
| 350-235（1） |
800
1080
1350
|
222.2
300
375
|
20
16
12
|
80
83
82
|
980 |
75 |
| 350-300 |
600
800
960
|
167
222
267
|
22.5
20
17.5
|
79
82
71
|
980 |
75 |
| 350-315 |
600
800
960
|
167
222
267
|
35.5
32
28.5
|
84
|
980 |
90 |
| 350-400 |
600
800
960
|
167
222
267
|
55
50
45.5
|
83 |
980 |
160 |
| 400-300 |
920
1180
1300
|
255
328
361
|
23
19
16
|
78 |
980 |
90 |
| 400-315 |
950
1250
1500
|
264
347
416
|
32
28
24
|
76 |
980 |
132 |
| 500-235 |
1500
1800
2000
|
416
500
556
|
16
14
12
|
75 |
980 |
110 |
| 500-300 |
1400
1700
1900
|
388
472
528
|
22
20
18
|
80 |
980 |
132 |
| 500-315 |
1200
1550
1800
|
333
416
500
|
32
28
24 |
78 |
980 |
160 |
|
|
|---|
|
|
Hot water pump malfunction phenomenon |
The original history that may be generated by the hot water pump |
Troubleshooting methods for hot water pumps |
The hot water pump is not producing water |
The inlet and outlet valves of the hot water pump are not open, the inlet and outlet pipelines are blocked, and the flow impeller is blocked |
Check and remove blockages |
The running direction of the hot water pump motor is incorrect, and the motor has a slow speed due to phase loss |
Adjust the motor direction and strengthen the motor wiring |
Air leakage in the suction pipe of the hot water pump |
Tighten all sealing surfaces and eliminate air |
The hot water pump is not filled with liquid and there is air in the pump chamber |
Open the pump cover or open the exhaust valve to exhaust all the air |
Insufficient water supply at the inlet and outlet of the hot water pump, high suction stroke, and leaking bottom valve |
Shutdown inspection and adjustment (this phenomenon is prone to occur when using grid connected water pipes and suction pumps). |
Excessive resistance in the hot water pump pipeline and improper pump selection |
Reduce pipeline bends and reselect pumps |
Insufficient flow of hot water pump |
First, check the reason according to 1 |
First, press 1. Exclude |
The hot water pump pipeline and pump passage impeller are partially blocked, with scale deposition and insufficient valve opening |
Remove the obstruction and readjust the valve opening |
Low voltage of hot water pump |
voltage stabilization |
Wear of impeller in hot water pump |
Replace the impeller |
The power of the hot water pump is too high |
Hot water pump used beyond rated flow rate |
Adjust the flow rate and turn down the outlet valve |
Hot water pump suction too high |
Reduce suction distance |
The bearings of the hot water pump are worn |
replace the bearing |
Noise and vibration of hot water pump |
Unstable support of hot water pump pipeline |
Stable pipeline |
Hot water pump liquid mixed with gas |
Increase suction pressure and exhaust |
Hot water pump generates cavitation |
降低真空度 |
The bearing of the hot water pump is damaged |
replace the bearing |
The hot water pump motor is running due to overload and overheating |
Adjust according to 5 |
Hot water pump motor overheating |
The flow rate of the hot water pump is too high, causing overload operation |
Turn down the outlet valve |
Hot water pump rubbing |
Check and exclude |
The bearing of the hot water pump motor is damaged |
replace the bearing |
Insufficient voltage of hot water pump |
voltage stabilization |
Hot water pump leaking |
Mechanical seal wear of hot water pump |
replace |
The hot water pump body has sand holes or cracks |
Welding repair or replacement |
The sealing surface of the hot water pump is uneven |
trim |
The installation bolts of the hot water pump are loose |
fasten |
|
|---|
|
| Keywords: centrifugal pump |
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- Pump and valve knowledge
- Download the manual
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Installation and maintenance precautions for ZX series horizontal self-priming centrifugal pump |
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Measures and methods to reduce the noise of centrifugal pumps |
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How to adjust the flow rate of pipeline centrifugal pump |
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Schematic diagram of the working principle of pipeline centrifugal pump |
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