Product Description
Model Meaning
Product Introduction
WL/LW non-clogging vertical sewage pumps are newly developed products designed based on actual pump application characteristics. They feature anti-winding, non-clogging performance, automatic installation, and automatic control. The pump delivers excellent performance in handling solid particles and long-fiber debris.
The WL/LW pump adopts a unique impeller structure and a new mechanical seal, enabling efficient transfer of liquids containing solids and long fibers.
Compared with traditional impellers, this pump uses a single-channel or double-channel impeller design, similar to a tube with consistent cross-section, providing excellent flow-through capability. Combined with a well-designed volute chamber, the pump achieves high efficiency. The impeller undergoes dynamic and static balance tests, ensuring vibration-free operation.
With advanced and mature hydraulic performance, the WL/LW pump meets all relevant standards during testing. After entering the market, it has been widely praised by users for its efficiency, reliability, and stable quality.
Product Features
1. Double-blade impeller design greatly improves the pump’s ability to pass solids.
2. Mechanical seal uses a new friction pair and operates long-term in an oil chamber.
3. Compact overall structure, small size, low noise, easy maintenance, convenient for users to replace parts.
4. Automatic control panel can start and stop the pump automatically according to liquid level changes, eliminating the need for manual supervision.
5. Multiple installation methods can be selected according to user needs, providing convenience in installation and maintenance without requiring personnel to enter the sewage pit.
6. Ensures the motor does not overload when operated within the designed performance range.
7. Equipped with an outdoor-rated motor, the pump can be installed directly outdoors without building a pump house, reducing overall costs.
Product Applications
WL/LW non-clogging vertical sewage pumps are suitable for discharging heavily polluted industrial wastewater, residential sewage pumping stations, municipal wastewater treatment plant systems, civil-defense drainage stations, water supply facilities of waterworks, hospital and hotel sewage discharge, municipal engineering projects, construction sites, mining auxiliary equipment, rural biogas pits, farmland irrigation, and other industries.
They are ideal for transporting sewage and wastewater containing particles, and can also be used with clean water or weakly corrosive media.
Operating Conditions
1. Applicable when the pump operates at a rated voltage of 380V and a power frequency of 50Hz.
2. Medium temperature ≤ 40°C, medium density ≤ 1150 kg/m3, pH value between 5–9.
3. Installation altitude shall not exceed 1000 meters.
4. Medium viscosity shall not exceed 1000 CP.
5. Pump body is mainly cast iron and must not be used for strong corrosive or highly corrosive media.
Note: Before model selection or installation, ensure that the actual operating conditions meet the above requirements to guarantee proper pump performance!
Structure Diagram
|
No.
|
Name
|
No.
|
Name
|
|
1
|
Motor
|
9
|
Bearing Cover
|
|
2
|
Extended Shaft
|
10
|
Bearing
|
|
3
|
Bearing Seat
|
11
|
Mechanical Seal Seat
|
|
4
|
Pump Cover
|
12
|
Mechanical Seal
|
|
5
|
Oil Seal
|
13
|
Key
|
|
6
|
Impeller
|
14
|
Pump Wear Ring
|
|
7
|
Impeller Nut
|
15
|
Pump Body
|
|
8
|
Base
|
Performance Parameters
|
Model
|
Diameter
|
Flow Rate (m³/h)
|
Head (m)
|
Speed (rpm)
|
Power (kW)
|
Efficiency (%)
|
|
mm
|
(m3/h)
|
(M)
|
(r/min)
|
(kw)
|
(%)
|
|
|
25-7-8-0.55
|
25
|
7
|
8
|
2900
|
0.55
|
45
|
|
25-8-22-1.1
|
25
|
8
|
22
|
2900
|
1.1
|
45
|
|
32-8-12-0.75
|
32
|
8
|
12
|
2900
|
0.75
|
48
|
|
32-12-15-1.1
|
32
|
12
|
15
|
2900
|
1.1
|
45
|
|
40-15-15-1.5
|
40
|
15
|
15
|
2900
|
1.5
|
48
|
|
40-15-30-2.2
|
40
|
15
|
30
|
2900
|
2.2
|
54
|
|
50-20-7-0.75
|
50
|
20
|
7
|
2900
|
0.75
|
51
|
|
50-10-10-0.75
|
50
|
10
|
10
|
2900
|
0.75
|
52
|
|
50-20-15-1.5
|
50
|
20
|
15
|
290
|
1.5
|
53
|
|
50-15-25-2.2
|
50
|
15
|
25
|
2900
|
2.2
|
54
|
|
50-18-30-3
|
50
|
18
|
30
|
2900
|
3
|
55
|
|
50-40-15-4
|
50
|
40
|
15
|
2900
|
4
|
55
|
|
50-25-32-5.5
|
50
|
25
|
32
|
2900
|
5.5
|
55
|
|
50-20-40-7.5
|
50
|
50
|
20
|
2900
|
7.5
|
58
|
|
65-25-15-2.2
|
65
|
25
|
15
|
2900
|
2.2
|
50
|
|
65-37-13-3
|
65
|
37
|
13
|
2900
|
3
|
57
|
|
65-25-30-4
|
65
|
25
|
30
|
2900
|
4
|
61
|
|
65-30-40-7.5
|
65
|
30
|
40
|
2900
|
7.5
|
56
|
|
65-35-50-11
|
65
|
35
|
50
|
2900
|
11
|
45
|
|
65-35-60-15
|
65
|
35
|
60
|
2900
|
15
|
65
|
|
80-40-7-2.2
|
80
|
40
|
7
|
1450
|
2.2
|
59
|
|
80-43-13-3
|
80
|
43
|
13
|
2900
|
3
|
70
|
|
80-40-15-4
|
80
|
40
|
15
|
2900
|
4
|
61
|
|
80-60-13-5.5
|
80
|
60
|
13
|
2900
|
5.5
|
67
|
|
80-65-25-7.5
|
80
|
65
|
25
|
2900
|
7.5
|
63
|
|
Model
|
Diameter
|
Flow Rate (m³/h)
|
Head (m)
|
Speed (rpm)
|
Power (kW)
|
Efficiency (%)
|
|
mm
|
(m3/h)
|
(M)
|
(r/min)
|
(kw)
|
(%)
|
|
|
100-80-10-4
|
100
|
100
|
10
|
1450
|
4
|
65
|
|
100-100-15-7.5
|
100
|
100
|
15
|
1450
|
7.5
|
68
|
|
100-80-20-7.5
|
100
|
80
|
20
|
1450
|
7.5
|
65
|
|
100-100-25-11
|
100
|
100
|
25
|
1450
|
11
|
70
|
|
100-100-30-15
|
100
|
100
|
30
|
1450
|
15
|
65
|
|
100-100-35-18.5
|
100
|
100
|
35
|
1450
|
18.5
|
68
|
|
125-130-15-11
|
125
|
130
|
15
|
1450
|
11
|
72
|
|
125-130-20-15
|
125
|
130
|
20
|
1450
|
15
|
75
|
|
150-145-9-7.5
|
150
|
145
|
9
|
1450
|
7.5
|
76
|
|
150-180-15-15
|
150
|
180
|
15
|
1450
|
15
|
69
|
|
150-180-20-18.5
|
150
|
180
|
20
|
1450
|
18.5
|
72
|
|
150-180-25-22
|
150
|
180
|
25
|
1450
|
22
|
78
|
|
150-130-30-22
|
150
|
130
|
30
|
1450
|
22
|
78
|
|
150-180-30-30
|
150
|
180
|
30
|
1450
|
30
|
78
|
|
150-200-30-37
|
150
|
200
|
30
|
1450
|
37
|
73
|
|
200-300-7-11
|
200
|
300
|
7
|
980
|
11
|
66
|
|
200-250-11-15
|
200
|
250
|
11
|
1450
|
15
|
64
|
|
200-250-15-18.5
|
200
|
250
|
15
|
1450
|
18.5
|
73
|
|
200-400-10-22
|
200
|
400
|
10
|
1450
|
22
|
75
|
|
200-400-13-30
|
200
|
400
|
13
|
14501
|
30
|
76
|
|
200-300-15-22
|
200
|
300
|
15
|
1450
|
22
|
76
|
|
200-250-22-30
|
200
|
250
|
22
|
1450
|
30
|
71
|
|
200-350-25-37
|
200
|
350
|
25
|
1450
|
37
|
71
|
|
200-400-30-45
|
200
|
400
|
30
|
1450
|
45
|
74
|
|
Model
|
Diameter
|
Flow Rate (m³/h)
|
Head (m)
|
Speed (rpm)
|
Power (kW)
|
Efficiency (%)
|
|
mm
|
(m3/h)
|
(M)
|
(r/min)
|
(kw)
|
(%)
|
|
|
250-600-9-30
|
250
|
600
|
9
|
980
|
30
|
78
|
|
250-600-12-37
|
250
|
600
|
12
|
1450
|
37
|
76
|
|
250-600-15-45
|
250
|
600
|
15
|
1450
|
45
|
73
|
|
250-600-20-55
|
250
|
600
|
20
|
1450
|
55
|
73
|
|
250-600-25-75
|
250
|
600
|
25
|
1450
|
75
|
71
|
|
300-800-12-45
|
300
|
800
|
12
|
980
|
45
|
74
|
|
300-480-15-45
|
300
|
480
|
15
|
1450
|
45
|
66
|
|
300-800-15-55
|
300
|
800
|
15
|
1450
|
55
|
73
|
|
300-600-20-55
|
300
|
600
|
20
|
1450
|
55
|
73
|
|
300-800-20-75
|
300
|
800
|
20
|
1450
|
75
|
75
|
|
300-950-20-90
|
300
|
950
|
20
|
1450
|
90
|
76
|
|
300-1000-25-110
|
300
|
1000
|
25
|
1450
|
110
|
76
|
|
300-1100-10-55
|
300
|
1100
|
10
|
1450
|
55
|
73
|
|
350-1500-15-90
|
350
|
1500
|
15
|
740
|
90
|
87
|
|
350-1200-18-90
|
350
|
1200
|
18
|
980
|
90
|
85
|
|
350-1100-28-132
|
350
|
1100
|
28
|
980
|
132
|
84
|
|
350-1000-36-160
|
350
|
1000
|
36
|
980
|
160
|
84
|
|
400-1760-7.5-55
|
400
|
1760
|
7.5
|
980
|
55
|
83
|
|
400-1500-10-75
|
400
|
1500
|
10
|
980
|
75
|
86
|
|
400-2000-13-110
|
400
|
2000
|
13
|
980
|
110
|
84
|
|
400-2000-15-132
|
400
|
2000
|
15
|
980
|
132
|
83
|
|
400-1700-22-160
|
400
|
1700
|
22
|
980
|
160
|
83
|
|
400-1500-26-160
|
400
|
1500
|
26
|
980
|
160
|
84
|
|
Model
|
Diameter
|
Flow Rate (m³/h)
|
Head (m)
|
Speed (rpm)
|
Power (kW)
|
Efficiency (%)
|
|
mm
|
(m3/h)
|
(M)
|
(r/min)
|
(kw)
|
(%)
|
|
|
400-1800-32-250
|
400
|
1800
|
32
|
980
|
250
|
82
|
|
500-2500-10-110
|
500
|
2500
|
10
|
740
|
110
|
85
|
|
500-2600-15-160
|
500
|
2600
|
15
|
740
|
160
|
84
|
|
500-2400-22-220
|
500
|
2400
|
22
|
740
|
220
|
85
|
|
500-2650-24-250
|
500
|
2650
|
24
|
740
|
250
|
85
|
OEM & Custom Solutions
OEM and ODM customization are available. Options include stainless-steel components, explosion-proof motors, special voltage and frequency, extended cable length, and automatic control panels. Pumps can be configured for industrial wastewater, municipal drainage, marine, or agricultural irrigation projects. Full technical support and 3D drawings are provided for international buyers.
FAQs for Oversea Buyers
Q: What’s the main difference between LW and WL types?
A: LW has a vertical outlet structure, while WL is designed for higher flow and pressure applications with optimized volute and impeller profiles.
Q: Can the pump handle solids or fibers?
A: Yes, the large-channel impeller allows solids and long fibers to pass through without clogging, ensuring smooth sewage discharge.
Q: What materials are available?
A: Standard pumps use cast iron. Stainless steel or duplex alloy versions are available for corrosive environments.
Q: Can it operate continuously?
A: Yes, the pump adopts a hard-alloy double mechanical seal and F-class insulation motor for safe 24-hour continuous operation.
Q: What are the installation options?
A: The pump can be installed vertically with flange connections or equipped with automatic coupling for quick removal and maintenance.
Q: Do you provide OEM labeling and voltage customization?
A: Yes, we support OEM branding, special voltages (220V, 415V, 460V), and frequency options (50/60Hz).
Q: What are the main export markets?
A: Our LW/WL vertical sewage pumps are widely exported to Southeast Asia, Africa, the Middle East, and South America, meeting ISO and CE certification standards.