Product Overview
The LG vertical, easy-dismantling multistage clean-water pump is an integrated vertical multistage pump unit developed for constant-pressure water supply in high-rise buildings and for fire-fighting duties. Based on a proven hydraulic design, it delivers high efficiency and stable head–capacity characteristics, making it suitable for continuous operation with low noise and long service life. The vertical multistage configuration provides a compact footprint and enables straightforward integration into building booster systems and packaged pump sets. With a lightweight, service-friendly component layout, the unit is well suited for engineering installations in building water supply, drainage, and building services systems.
Model Designation
Key Features
- Compact vertical multistage structure with a small footprint, suitable for building water systems; optional outdoor protection cover supports flexible installation scenarios.
- Impellers directly mounted on motor shaft ensure coaxial operation, enhancing stability and extending equipment service life.
- High-quality mechanical seal or cartridge seal, equipped with hard alloy sealing rings for improved wear resistance and extended seal durability.
- Equal-diameter suction/discharge ports, support for series or parallel pump operation, configurable inlet/outlet orientation (0°, 90°, 180°, 270°), and head adjustability via stage modification or impeller trimming.
Engineering Summary
-
An integrated vertical multistage configuration with a compact overall arrangement, reducing footprint and facilitating booster-system integration.
-
Proven hydraulics delivering stable head–flow performance, supporting continuous-duty service.
-
A close-coupled direct-drive arrangement with controlled concentricity to reduce vibration and operating noise.
-
An easy-dismantling design enabling efficient inspection and fast mechanical seal replacement.
Typical Applications
-
Domestic water supply and constant-pressure boosting for high-rise and super high-rise buildings.
-
Pressure maintenance and primary supply units for fire hydrant and automatic sprinkler systems.
-
Centralized water supply systems for public buildings such as hotels, hospitals, and office buildings.
-
Cooling-tower make-up water, circulating water systems, and system pressure stabilization duties.
-
Boiler feedwater service and long-distance clean-water transfer.
System & Operation
Components & Supply
-
The pump and motor adopt a close-coupled direct-drive arrangement, forming a rigid integrated unit; no on-site alignment is required during installation or operation.
-
The drive is a Y-series three-phase induction motor with standardized design and interchangeability, supporting replacement and routine servicing.
-
The pump shaft and motor shaft are connected via a clamp-type coupling to ensure accurate alignment for smooth operation and reduced operating noise.
-
The shaft sealing system is a mechanical seal; the easy-dismantling structure supports efficient mechanical seal replacement during maintenance.
-
Viewed from the motor end, the rotation direction is clockwise.
Technical Specifications
Operating Conditions
-
Pumped liquid: Clean water or non-corrosive liquids with physical and chemical properties similar to water; kinematic viscosity ≤ 150 mm²/s; free of hard particles.
-
Installation altitude: ≤ 1000 m; if exceeded, specify at the time of order for appropriate configuration.
-
Medium temperature range: −15°C to 120°C.
-
Maximum system working pressure: ≤ 2.5 MPa.
-
Ambient limits: Ambient temperature < 40°C; relative humidity < 95%.
Service Conditions
-
Standard version is intended for clean-water transfer at normal temperature (typically < 80°C).
-
The hot-water version is suitable for medium temperatures up to 105°C.
-
With appropriate material selection and within the specified operating conditions, the pump can handle non-corrosive liquids with properties similar to water at normal temperature, supporting continuous duty and stable system performance.
-
The compact vertical multistage arrangement is suitable for integration into building booster systems and packaged pump sets, with service access designed for routine inspection and seal replacement.
Protection Functions
-
Motor overload protection: Provide overload protection to prevent overheating under abnormal load conditions.
-
Dry-run protection: Implement interlocks (level/flow-based) to prevent operation without adequate liquid supply.
-
Overpressure protection: Use pressure control and safety devices to ensure system pressure remains within the specified limit (≤ 2.5 MPa).
-
Backflow protection: Install a check valve on the discharge line to prevent reverse flow and associated hydraulic shock.
Selection Criteria
-
Select pump model and number of stages based on the required flow rate and total head, keeping the duty point within the preferred efficiency range.
-
Confirm the pumped medium meets limits for viscosity, solids, and corrosiveness, and select the standard or hot-water version according to medium temperature.
-
Verify site conditions against altitude, ambient temperature, and humidity limits; specify special conditions at ordering to ensure correct configuration.
-
Ensure the maximum system working pressure does not exceed 2.5 MPa, and confirm nozzle orientation requirements (0°/90°/180°/270°) for the piping layout.
-
For continuous-duty systems, consider series/parallel arrangements and maintenance access requirements enabled by the easy-dismantling structure.
Installation Dimensions/Size
Outline Drawing
Pump Parts & Materials List
| Item No. | Component Name | Material / Model | Item No. | Component Name | Material / Model |
|---|---|---|---|---|---|
| 1 | Motor | Y Series (V5), 2-Pole | 9 | Shaft Sleeve | Q235 |
| 2 | Motor Bracket | HT200 | 10 | Middle Section | HT200 |
| 3 | Coupling | HT200 | 11 | Diffuser | HT200 |
| 4 | Mechanical Seal Cover | HT200 | 12 | Impeller | HT200 |
| 5 | Air Release Valve | Copper Alloy | 13 | Shaft | 45 Steel / 2Cr13 |
| 6 | Mechanical Seal | 120A | 14 | Bearing | Tin Bronze |
| 7 | Final Diffuser | HT200 | 15 | Suction Section | HT200 |
| 8 | Discharge Section | HT200 |
Performance Parameters
|
Model
|
Stages
|
Flow
|
Head
|
Speed
|
Motor Power
|
Efficiency
|
Weight
|
Required
|
|
(m3/h)
|
(M)
|
(r/min)
|
(kw)
|
(%)
|
Kg
|
NPSH(m)
|
||
|
25LG(R)3-10*2
|
2
|
3
|
20
|
2900
|
0.75
|
42
|
70
|
2.0
|
|
25LG(R)3-10*3
|
3
|
3
|
30
|
2900
|
1.1
|
42
|
74
|
2.0
|
|
25LG(R)3-10*4
|
4
|
3
|
40
|
2900
|
1.5
|
42
|
85
|
2.0
|
|
25LG(R)3-10*5
|
5
|
3
|
50
|
2900
|
1.5
|
42
|
89
|
2.0
|
|
25LG(R)3-10*6
|
6
|
3
|
60
|
2900
|
2.2
|
42
|
100
|
2.0
|
|
25LG(R)3-10*7
|
7
|
3
|
70
|
2900
|
2.2
|
42
|
104
|
2.0
|
|
25LG(R)3-10*8
|
8
|
3
|
80
|
2900
|
2.2
|
42
|
108
|
2.0
|
|
25LG(R)3-10*9
|
9
|
3
|
90
|
2900
|
2.2
|
42
|
112
|
2.0
|
|
25LG(R)3-10*10
|
10
|
3
|
100
|
2900
|
3
|
42
|
125
|
2.0
|
|
25LG(R)3-10*11
|
11
|
3
|
110
|
2900
|
3
|
42
|
129
|
2.0
|
|
25LG(R)3-10*12
|
12
|
3
|
120
|
2900
|
4
|
42
|
145
|
2.0
|
|
25LG(R)3-10*13
|
13
|
3
|
130
|
2900
|
4
|
42
|
149
|
2.0
|
|
25LG(R)3-10*14
|
14
|
3
|
140
|
2900
|
4
|
42
|
153
|
2.0
|
|
25LG(R)3-10*15
|
15
|
3
|
150
|
2900
|
4
|
42
|
157
|
2.0
|
|
Model
|
Stages
|
Flow
|
Head
|
Speed
|
Motor Power
|
Efficiency
|
Weight
|
Required
|
|
(m3/h)
|
(M)
|
(r/min)
|
(kw)
|
(%)
|
Kg
|
NPSH(m)
|
||
|
32LG(R)6.5-15*2
|
2
|
6.5
|
30
|
2900
|
1.5
|
53
|
90
|
2.4
|
|
32LG(R)6.5-15*3
|
3
|
6.5
|
45
|
2900
|
2.2
|
53
|
100
|
2.4
|
|
32LG(R)6.5-15*4
|
4
|
6.5
|
60
|
2900
|
3
|
53
|
115
|
2.4
|
|
32LG(R)6.5-15*5
|
5
|
6.5
|
75
|
2900
|
4
|
53
|
135
|
2.4
|
|
32LG(R)6.5-15*6
|
6
|
6.5
|
90
|
2900
|
4
|
53
|
142
|
2.4
|
|
32LG(R)6.5-15*7
|
7
|
6.5
|
105
|
2900
|
5.5
|
53
|
175
|
2.4
|
|
32LG(R)6.5-15*8
|
8
|
6.5
|
120
|
2900
|
5.5
|
53
|
182
|
2.4
|
|
32LG(R)6.5-15*9
|
9
|
6.5
|
135
|
2900
|
5.5
|
53
|
190
|
2.4
|
|
32LG(R)6.5-15*10
|
10
|
6.5
|
150
|
2900
|
7.5
|
53
|
210
|
2.4
|
|
40LG(R)12-15*2
|
2
|
12
|
30
|
2900
|
2.2
|
60
|
90
|
2.9
|
|
40LG(R)12-15*3
|
3
|
12
|
45
|
2900
|
3
|
60
|
105
|
2.9
|
|
40LG(R)12-15*4
|
4
|
12
|
60
|
2900
|
4
|
60
|
130
|
2.9
|
|
40LG(R)12-15*5
|
5
|
12
|
75
|
2900
|
5.5
|
60
|
155
|
2.9
|
|
40LG(R)12-15*6
|
6
|
12
|
90
|
2900
|
5.5
|
60
|
163
|
2.9
|
|
40LG(R)12-15*7
|
7
|
12
|
105
|
2900
|
7.5
|
60
|
180
|
2.9
|
|
40LG(R)12-15*8
|
8
|
12
|
120
|
2900
|
7.5
|
60
|
190
|
2.9
|
|
40LG(R)12-15*9
|
9
|
12
|
135
|
2900
|
11
|
60
|
215
|
2.9
|
|
40LG(R)12-15*10
|
10
|
12
|
150
|
2900
|
11
|
60
|
225
|
2.9
|
|
Model
|
Stages
|
Flow
|
Head
|
Speed
|
Motor Power
|
Efficiency
|
Weight
|
Required
|
|
(m3/h)
|
(M)
|
(r/min)
|
(kw)
|
(%)
|
Kg
|
NPSH(m)
|
||
|
50LG(R)24-20*2
|
2
|
24
|
40
|
2900
|
5.5
|
69
|
160
|
3.2
|
|
50LG(R)24-20*3
|
3
|
24
|
60
|
2900
|
7.5
|
69
|
180
|
3.2
|
|
50LG(R)24-20*4
|
4
|
24
|
80
|
2900
|
11
|
69
|
250
|
3.2
|
|
50LG(R)24-20*5
|
5
|
24
|
100
|
2900
|
11
|
69
|
260
|
3.2
|
|
50LG(R)24-20*6
|
6
|
24
|
120
|
2900
|
15
|
69
|
280
|
3.2
|
|
50LG(R)24-20*7
|
7
|
24
|
140
|
2900
|
15
|
69
|
290
|
3.2
|
|
50LG(R)24-20*8
|
8
|
24
|
160
|
2900
|
18.5
|
69
|
315
|
3.2
|
|
65LG(R)36-20*2
|
2
|
36
|
40
|
2900
|
7.5
|
72
|
170
|
3.4
|
|
65LG(R)36-20*3
|
3
|
36
|
60
|
2900
|
11
|
72
|
230
|
3.4
|
|
65LG(R)36-20*4
|
4
|
36
|
80
|
2900
|
15
|
72
|
250
|
3.4
|
|
65LG(R)36-20*5
|
5
|
36
|
100
|
2900
|
18.5
|
72
|
280
|
3.4
|
|
65LG(R)36-20*6
|
6
|
36
|
120
|
2900
|
22
|
72
|
330
|
3.4
|
|
65LG(R)36-20*7
|
7
|
36
|
140
|
2900
|
22
|
72
|
345
|
3.4
|
|
65LG(R)36-20*8
|
8
|
36
|
160
|
2900
|
30
|
72
|
395
|
3.4
|
|
Model
|
Stages
|
Flow
|
Head
|
Speed
|
Motor Power
|
Efficiency
|
Weight
|
Required
|
|
(m3/h)
|
(M)
|
(r/min)
|
(kw)
|
(%)
|
Kg
|
NPSH(m)
|
||
|
80LG(R)50-20*2
|
2
|
50
|
40
|
2900
|
11
|
73
|
250
|
3.4
|
|
80LG(R)50-20*3
|
3
|
50
|
60
|
2900
|
15
|
73
|
280
|
3.4
|
|
80LG(R)50-20*4
|
4
|
50
|
80
|
2900
|
18.5
|
73
|
310
|
3.4
|
|
80LG(R)50-20*5
|
5
|
50
|
100
|
2900
|
22
|
73
|
360
|
3.4
|
|
80LG(R)50-20*6
|
6
|
50
|
120
|
2900
|
30
|
73
|
440
|
3.4
|
|
80LG(R)50-20*7
|
7
|
50
|
140
|
2900
|
30
|
73
|
460
|
|
|
80LG(R)50-20*8
|
8
|
50
|
160
|
2900
|
37
|
73
|
490
|
|
|
100LG72-20*2
|
2
|
72
|
40
|
2900
|
11
|
73
|
260
|
3.5
|
|
100LG72-20*3
|
3
|
72
|
60
|
2900
|
18.5
|
73
|
290
|
3.5
|
|
100LG72-20*4
|
4
|
72
|
80
|
2900
|
22.0
|
73
|
380
|
3.5
|
|
100LG72-20*5
|
5
|
72
|
100
|
2900
|
30.0
|
73
|
450
|
3.5
|
|
100LG72-20*6
|
6
|
72
|
120
|
2900
|
37.0
|
73
|
470
|
3.5
|
|
100LG72-20*7
|
7
|
72
|
140
|
2900
|
45.0
|
73
|
520
|
3.5
|
|
100LG72-20*8
|
8
|
72
|
160
|
2900
|
45.0
|
73
|
540
|
3.5
|
|
100LG72-20*9
|
9
|
72
|
180
|
2900
|
55.0
|
73
|
3.5
|
|
|
Model
|
Stages
|
Flow
|
Head
|
Speed
|
Motor Power
|
Efficiency
|
Weight
|
Required
|
|
(m3/h)
|
(M)
|
(r/min)
|
(kw)
|
(%)
|
Kg
|
NPSH(m)
|
||
|
100LG100-20*2
|
2
|
100
|
40
|
2900
|
18.5
|
76
|
3.7
|
|
|
100LG100-20*3
|
3
|
100
|
60
|
2900
|
30
|
76
|
3.7
|
|
|
100LG100-20*4
|
4
|
100
|
80
|
2900
|
37
|
76
|
3.7
|
|
|
100LG100-20*5
|
5
|
100
|
100
|
2900
|
45
|
76
|
3.7
|
|
|
100LG100-20*6
|
6
|
100
|
120
|
2900
|
55
|
76
|
3.7
|
|
|
100LG100-20*7
|
7
|
100
|
140
|
2900
|
75
|
76
|
3.7
|
|
|
100LG100-20*8
|
8
|
100
|
160
|
2900
|
75
|
76
|
3.7
|
|
|
150LG150-20*2
|
2
|
150
|
40
|
2900
|
30
|
77
|
4.1
|
|
|
150LG150-20*3
|
3
|
150
|
60
|
2900
|
37
|
77
|
4.1
|
|
|
150LG150-20*4
|
4
|
150
|
80
|
2900
|
45
|
77
|
4.1
|
|
|
150LG150-20*5
|
5
|
150
|
100
|
2900
|
55
|
77
|
4.1
|
|
|
150LG150-20*6
|
6
|
150
|
120
|
2900
|
75
|
77
|
4.1
|
|
|
150LG150-20*7
|
7
|
150
|
140
|
2900
|
90
|
77
|
4.1
|
|
|
150LG150-20*8
|
8
|
150
|
160
|
2900
|
90
|
77
|
4.1
|
|
|
150LG150-20*9
|
9
|
150
|
180
|
2900
|
110
|
77
|
4.1
|
|
|
150LG150-20*10
|
10
|
150
|
200
|
2900
|
132
|
77
|
4.1
|
Installation Diagram
Installation Dimensions（1）
|
Model |
Stages
|
L
|
H
|
H1
|
H2
|
B
|
b
|
n-φd
|
Inlet Flange
|
Outlet Flange
|
||||||
|
Dj
|
Djn
|
Dj2
|
n-dj
|
Dc
|
Dcn
|
Dc2
|
n-φdc
|
|||||||||
|
25LG(R)3-10
|
2
|
130
|
630
|
85
|
180
|
230
|
190
|
4-φ18
|
115
|
25
|
85
|
4-M12
|
115
|
25
|
85
|
4-φ14
|
|
25LG(R)3-10
|
3
|
130
|
670
|
85
|
220
|
230
|
190
|
4-φ18
|
115
|
25
|
85
|
4-M12
|
115
|
25
|
85
|
4-φ14
|
|
25LG(R)3-10
|
4
|
130
|
710
|
85
|
260
|
230
|
190
|
4-φ18
|
115
|
25
|
85
|
4-M12
|
115
|
25
|
85
|
4-φ14
|
|
25LG(R)3-10
|
5
|
130
|
755
|
85
|
305
|
230
|
190
|
4-φ18
|
115
|
25
|
85
|
4-M12
|
115
|
25
|
85
|
4-φ14
|
|
25LG(R)3-10
|
6
|
130
|
825
|
85
|
340
|
230
|
190
|
4-φ18
|
115
|
25
|
85
|
4-M12
|
115
|
25
|
85
|
4-φ14
|
|
25LG(R)3-10
|
7
|
130
|
865
|
85
|
380
|
230
|
190
|
4-φ18
|
115
|
25
|
85
|
4-M12
|
115
|
25
|
85
|
4-φ14
|
|
25LG(R)3-10
|
8
|
130
|
900
|
85
|
425
|
230
|
190
|
4-φ18
|
115
|
25
|
85
|
4-M12
|
115
|
25
|
85
|
4-φ14
|
|
25LG(R)3-10
|
9
|
130
|
945
|
85
|
460
|
230
|
190
|
4-φ18
|
115
|
25
|
85
|
4-M12
|
115
|
25
|
85
|
4-φ14
|
|
25LG(R)3-10
|
10
|
130
|
1020
|
85
|
500
|
230
|
190
|
4-φ18
|
115
|
25
|
85
|
4-M12
|
115
|
25
|
85
|
4-φ14
|
|
25LG(R)3-10
|
11
|
130
|
1060
|
85
|
540
|
230
|
190
|
4-φ18
|
115
|
25
|
85
|
4-M12
|
115
|
25
|
85
|
4-φ14
|
|
25LG(R)3-10
|
12
|
130
|
1120
|
85
|
580
|
230
|
190
|
4-φ18
|
115
|
25
|
85
|
4-M12
|
115
|
25
|
85
|
4-φ14
|
|
25LG(R)3-10
|
13
|
130
|
1160
|
85
|
620
|
230
|
190
|
4-φ18
|
115
|
25
|
85
|
4-M12
|
115
|
25
|
85
|
4-φ14
|
|
25LG(R)3-10
|
14
|
130
|
1200
|
85
|
660
|
230
|
190
|
4-φ18
|
115
|
25
|
85
|
4-M12
|
115
|
25
|
85
|
4-φ14
|
|
25LG(R)3-10
|
15
|
130
|
1240
|
85
|
700
|
230
|
190
|
4-φ18
|
115
|
25
|
85
|
4-M12
|
115
|
25
|
85
|
4-φ14
|
|
Model |
Stages
|
L
|
H
|
H1
|
H2
|
B
|
b
|
n-φd
|
Inlet Flange
|
Outlet Flange
|
||||||
|
Dj
|
Djn
|
Dj2
|
n-dj
|
Dc
|
Dcn
|
Dc2
|
n-φdc
|
|||||||||
|
32LG(R)6.5-15
|
2
|
145
|
665
|
63
|
179
|
260
|
220
|
4-φ18
|
140
|
32
|
100
|
4-M16
|
140
|
32
|
100
|
4-φ18
|
|
32LG(R)6.5-15
|
3
|
145
|
740
|
63
|
229
|
260
|
220
|
4-φ18
|
140
|
32
|
100
|
4-M16
|
140
|
32
|
100
|
4-φ18
|
|
32LG(R)6.5-15
|
4
|
145
|
825
|
63
|
279
|
260
|
220
|
4-φ18
|
140
|
32
|
100
|
4-M16
|
140
|
32
|
100
|
4-φ18
|
|
32LG(R)6.5-15
|
5
|
145
|
895
|
63
|
329
|
260
|
220
|
4-φ18
|
140
|
32
|
100
|
4-M16
|
140
|
32
|
100
|
4-φ18
|
|
32LG(R)6.5-15
|
6
|
145
|
945
|
63
|
379
|
260
|
220
|
4-φ18
|
140
|
32
|
100
|
4-M16
|
140
|
32
|
100
|
4-φ18
|
|
32LG(R)6.5-15
|
7
|
145
|
1070
|
63
|
429
|
260
|
220
|
4-φ18
|
140
|
32
|
100
|
4-M16
|
140
|
32
|
100
|
4-φ18
|
|
32LG(R)6.5-15
|
8
|
145
|
1120
|
63
|
479
|
260
|
220
|
4-φ18
|
140
|
32
|
100
|
4-M16
|
140
|
32
|
100
|
4-φ18
|
|
32LG(R)6.5-15
|
9
|
145
|
1170
|
63
|
529
|
260
|
220
|
4-φ18
|
140
|
32
|
100
|
4-M16
|
140
|
32
|
100
|
4-φ18
|
|
32LG(R)6.5-15
|
10
|
145
|
1220
|
63
|
579
|
260
|
220
|
4-φ18
|
140
|
32
|
100
|
4-M16
|
140
|
32
|
100
|
4-φ18
|
|
40LG(R)12-15
|
2
|
145
|
710
|
70
|
193
|
260
|
220
|
4-φ18
|
150
|
40
|
110
|
4-M16
|
150
|
40
|
110
|
4-φ18
|
|
40LG(R)12-15
|
3
|
145
|
800
|
70
|
251
|
260
|
220
|
4-φ18
|
150
|
40
|
110
|
4-M16
|
150
|
40
|
110
|
4-φ18
|
|
40LG(R)12-15
|
4
|
145
|
880
|
70
|
309
|
260
|
220
|
4-φ18
|
150
|
40
|
110
|
4-M16
|
150
|
40
|
110
|
4-φ18
|
|
40LG(R)12-15
|
5
|
145
|
1015
|
70
|
367
|
260
|
220
|
4-φ18
|
150
|
40
|
110
|
4-M16
|
150
|
40
|
110
|
4-φ18
|
|
40LG(R)12-15
|
6
|
145
|
1075
|
70
|
425
|
260
|
220
|
4-φ18
|
150
|
40
|
110
|
4-M16
|
150
|
40
|
110
|
4-φ18
|
|
40LG(R)12-15
|
7
|
145
|
1170
|
70
|
483
|
260
|
220
|
4-φ18
|
150
|
40
|
110
|
4-M16
|
150
|
40
|
110
|
4-φ18
|
|
40LG(R)12-15
|
8
|
145
|
1230
|
70
|
541
|
260
|
220
|
4-φ18
|
150
|
40
|
110
|
4-M16
|
150
|
40
|
110
|
4-φ18
|
|
40LG(R)12-15
|
9
|
145
|
1410
|
70
|
599
|
260
|
220
|
4-φ18
|
150
|
40
|
110
|
4-M16
|
150
|
40
|
110
|
4-φ18
|
|
40LG(R)12-15
|
10
|
145
|
1465
|
70
|
657
|
260
|
220
|
4-φ18
|
150
|
40
|
110
|
4-M16
|
150
|
40
|
110
|
4-φ18
|
|
Model |
Stages
|
L
|
H
|
H1
|
H2
|
B
|
b
|
n-φd
|
Inlet Flange
|
Outlet Flange
|
||||||
|
Dj
|
Djn
|
Dj2
|
n-dj
|
Dc
|
Dcn
|
Dc2
|
n-φdc
|
|||||||||
|
50LG(R)24-20
|
2
|
180
|
885
|
80
|
214
|
300
|
248
|
4-φ23
|
165
|
50
|
125
|
4-M16
|
165
|
50
|
125
|
4-φ18
|
|
50LG(R)24-20
|
3
|
180
|
985
|
80
|
273
|
300
|
248
|
4-φ23
|
165
|
50
|
125
|
4-M16
|
165
|
50
|
125
|
4-φ18
|
|
50LG(R)24-20
|
4
|
180
|
1145
|
80
|
332
|
300
|
248
|
4-φ23
|
165
|
50
|
125
|
4-M16
|
165
|
50
|
125
|
4-φ18
|
|
50LG(R)24-20
|
5
|
180
|
1210
|
80
|
391
|
300
|
248
|
4-φ23
|
165
|
50
|
125
|
4-M16
|
165
|
50
|
125
|
4-φ18
|
|
50LG(R)24-20
|
6
|
180
|
1275
|
80
|
450
|
300
|
248
|
4-φ23
|
165
|
50
|
125
|
4-M16
|
165
|
50
|
125
|
4-φ18
|
|
50LG(R)24-20
|
7
|
180
|
1340
|
80
|
509
|
300
|
248
|
4-φ23
|
165
|
50
|
125
|
4-M16
|
165
|
50
|
125
|
4-φ18
|
|
50LG(R)24-20
|
8
|
180
|
1450
|
80
|
568
|
300
|
248
|
4-φ23
|
165
|
50
|
125
|
4-M16
|
165
|
50
|
125
|
4-φ18
|
|
65LG(R)36-20
|
2
|
180
|
965
|
90
|
245
|
300
|
248
|
4-φ23
|
185
|
65
|
145
|
4-M16
|
185
|
65
|
145
|
4-φ18
|
|
65LG(R)36-20
|
3
|
180
|
1120
|
90
|
304
|
300
|
248
|
4-φ23
|
185
|
65
|
145
|
4-M16
|
185
|
65
|
145
|
4-φ18
|
|
65LG(R)36-20
|
4
|
180
|
1185
|
90
|
363
|
300
|
248
|
4-φ23
|
185
|
65
|
145
|
4-M16
|
185
|
65
|
145
|
4-φ18
|
|
65LG(R)36-20
|
5
|
180
|
1295
|
90
|
422
|
300
|
248
|
4-φ23
|
185
|
65
|
145
|
4-M16
|
185
|
65
|
145
|
4-φ18
|
|
65LG(R)36-20
|
6
|
180
|
1390
|
90
|
481
|
300
|
248
|
4-φ23
|
185
|
65
|
145
|
4-M16
|
185
|
65
|
145
|
4-φ18
|
|
65LG(R)36-20
|
7
|
180
|
1455
|
90
|
540
|
300
|
248
|
4-φ23
|
185
|
65
|
145
|
4-M16
|
185
|
65
|
145
|
4-φ18
|
|
65LG(R)36-20
|
8
|
180
|
1615
|
90
|
599
|
300
|
248
|
4-φ23
|
185
|
65
|
145
|
4-M16
|
185
|
65
|
145
|
4-φ18
|
|
Model |
Stages
|
L
|
H
|
H1
|
H2
|
B
|
b
|
n-φd
|
Inlet Flange
|
Outlet Flange
|
||||||
|
Dj
|
Djn
|
Dj2
|
n-dj
|
Dc
|
Dcn
|
Dc2
|
n-φdc
|
|||||||||
|
80LG(R)50-20
|
2
|
187
|
965
|
112
|
301
|
315
|
272
|
4-φ23
|
200
|
80
|
160
|
8-M16
|
200
|
80
|
160
|
8-φ18
|
|
80LG(R)50-20
|
3
|
187
|
1195
|
112
|
379
|
315
|
272
|
4-φ23
|
200
|
80
|
160
|
8-M16
|
200
|
80
|
160
|
8-φ18
|
|
80LG(R)50-20
|
4
|
187
|
1270
|
112
|
457
|
315
|
272
|
4-φ23
|
200
|
80
|
160
|
8-M16
|
200
|
80
|
160
|
8-φ18
|
|
80LG(R)50-20
|
5
|
187
|
1395
|
112
|
535
|
315
|
272
|
4-φ23
|
200
|
80
|
160
|
8-M16
|
200
|
80
|
160
|
8-φ18
|
|
80LG(R)50-20
|
6
|
187
|
1505
|
112
|
613
|
315
|
272
|
4-φ23
|
200
|
80
|
160
|
8-M16
|
200
|
80
|
160
|
8-φ18
|
|
80LG(R)50-20
|
7
|
187
|
1675
|
112
|
691
|
315
|
272
|
4-φ23
|
200
|
80
|
160
|
8-M16
|
200
|
80
|
160
|
8-φ18
|
|
80LG(R)50-20
|
8
|
187
|
1755
|
112
|
769
|
315
|
272
|
4-φ23
|
200
|
80
|
160
|
8-M16
|
200
|
80
|
160
|
8-φ18
|
|
100LG72-20
|
2
|
187
|
1185
|
122
|
343
|
315
|
272
|
4-φ23
|
220
|
100
|
180
|
8-M16
|
220
|
100
|
180
|
8-φ18
|
|
100LG72-20
|
3
|
187
|
1270
|
122
|
432
|
315
|
272
|
4-φ23
|
220
|
100
|
180
|
8-M16
|
220
|
100
|
180
|
8-φ18
|
|
100LG72-20
|
4
|
187
|
1390
|
122
|
521
|
315
|
272
|
4-φ23
|
220
|
100
|
180
|
8-M16
|
220
|
100
|
180
|
8-φ18
|
|
100LG72-20
|
5
|
187
|
1580
|
122
|
610
|
315
|
272
|
4-φ23
|
220
|
100
|
180
|
8-M16
|
220
|
100
|
180
|
8-φ18
|
|
100LG72-20
|
6
|
187
|
1655
|
122
|
699
|
315
|
272
|
4-φ23
|
220
|
100
|
180
|
8-M16
|
220
|
100
|
180
|
8-φ18
|
|
100LG72-20
|
7
|
187
|
1800
|
122
|
788
|
315
|
272
|
4-φ23
|
220
|
100
|
180
|
8-M16
|
220
|
100
|
180
|
8-φ18
|
|
100LG72-20
|
8
|
187
|
1900
|
122
|
877
|
315
|
272
|
4-φ23
|
220
|
100
|
180
|
8-M16
|
220
|
100
|
180
|
8-φ18
|
|
100LG72-20
|
9
|
187
|
2100
|
122
|
966
|
315
|
272
|
4-φ23
|
220
|
100
|
180
|
8-M16
|
220
|
100
|
180
|
8-φ18
|
Rigid Connection
|
1
|
Ball Valve
|
2
|
Flexible Joint
|
3
|
Pressure Gauge
|
4
|
Vacuum Gauge
|
|
5
|
Gate Valve
|
6
|
Elbow Pipe
|
7
|
Pressure Measuring Pipe
|
8
|
Concrete Base
|
Flexible Connection
|
1
|
Ball Valve
|
2
|
Flexible Joint
|
3
|
Pressure Measuring Pipe
|
4
|
Gate Valve
|
5
|
Elbow Pipe
|
|
6
|
Pump
|
7
|
Connection Plate
|
8
|
JGD Vibration Isolator
|
9
|
Concrete Base
|
||
Installation Diagram（2）
Installation Dimensions（2）
|
Model
|
Connection Plate Dimensions
|
Rigid Connection Concrete Base Dimensions
|
||||||||||
|
A×A
|
B×B
|
C×C
|
H
|
d1
|
d2
|
D×D
|
E×E
|
F×F
|
H
|
d
|
h
|
|
|
25LG
|
190
|
340
|
400
|
60
|
φ14 or φ18
|
φ18
|
191
|
500
|
550
|
250
|
60
|
200
|
|
32LG
|
220
|
440
|
500
|
60
|
φ14 or φ18
|
φ18
|
219
|
500
|
550
|
250
|
60
|
200
|
|
40LG
|
220
|
440
|
500
|
60
|
φ14 or φ18
|
φ24
|
219
|
500
|
550
|
250
|
80
|
250
|
|
50LG
|
248
|
540
|
600
|
60
|
φ18 or φ22
|
φ24
|
248
|
550
|
600
|
350
|
80
|
250
|
|
65LG
|
248
|
540
|
600
|
60
|
φ18 or φ22
|
φ24
|
248
|
550
|
600
|
350
|
80
|
250
|
|
80LG
|
272
|
540
|
600
|
60
|
φ18 or φ22
|
φ24
|
272
|
600
|
650
|
350
|
80
|
250
|
|
100LG
|
272
|
540
|
600
|
60
|
φ22
|
φ24
|
272
|
600
|
650
|
350
|
80
|
250
|
OEM & Custom
Chaodun Pump provides OEM and ODM customization for LG vertical multistage pumps. Available materials: cast iron, stainless steel, bronze. Options for voltage, flange standard, outlet direction, and labeling. Suitable for distributors and project contractors worldwide.
FAQs
- What are LG pumps used for?
- LG pumps are widely used in high-rise building water supply, fire systems, and industrial circulation, providing efficient and stable water flow to meet various high-pressure demands.
- Can this pump handle hot water?
- Yes, the LG pump can handle hot water up to 105°C with the standard configuration, making it ideal for applications requiring hot water transport, such as HVAC and hot water supply systems.
- What’s the advantage of the detachable design?
- The detachable design makes maintenance more convenient, as users do not need to disassemble the piping or realign the motor. This reduces maintenance time and costs, enhancing ease of use.
- Do you offer OEM branding?
- Yes, we provide OEM services, including customized color, logo, and export packaging to meet the branding needs of different customers.
- Is the LG pump suitable for special liquids?
- Yes, the LG pump is made with corrosion-resistant materials and is suitable for handling chemical media, sewage, and other corrosive liquids, ensuring efficient operation in harsh environments.
- Can the LG pump handle corrosive liquids?
- Yes, the LG pump is designed with corrosion-resistant materials, making it ideal for pumping chemical media, sewage, and other corrosive liquids, ensuring long-term stable performance.
- How should I maintain the LG pump?
- It is recommended to regularly check the filter, replace seals, and lubricate the pump to ensure efficient operation. Regular maintenance helps extend the pump’s lifespan.
- What is the flow rate and head of the LG pump?
- The LG pump offers customized flow and head solutions to meet various application requirements, making it suitable for high-demand hydraulic systems.