Product Overview
The LW/ WL Non-Clogging Vertical Sewage Pump is a vertical wastewater pump specifically designed for handling media containing solid particles and long fiber materials. This series is developed for actual sewage and drainage applications, offering reliable non-clogging performance and stable solid-liquid transfer capabilities, ideal for continuous operation in wastewater treatment and sewage treatment systems.
The pump features a specialized non-clogging impeller design and robust mechanical seals, ensuring stable and reliable operation when pumping media containing solids and fibrous impurities.
Model Designation
Key Features
-
Single or double-channel impeller design, significantly improving the ability to handle solid particles and fibrous media, reducing clogging risks.
-
Mechanical seals using advanced friction pair materials, operating in an oil chamber to enhance sealing reliability and ensure continuous operation.
-
Compact structure with low noise, small footprint, and easy maintenance, facilitating component replacement.
-
Optional automatic control system that enables automatic start/stop based on liquid level changes, reducing manual intervention.
-
Multiple installation options available, allowing installation and maintenance without entering the sewage pit.
-
Safe operation within the design range, effectively preventing motor overload.
-
Outdoor-rated motor configuration allows the pump to be directly installed outdoors without the need for a pump room, reducing overall installation and construction costs.
Engineering Summary
The LW/ WL Series Non-Clogging Vertical Sewage Pump uses an optimized design focusing on high-efficiency hydraulic performance and reliable long-term operation. The single-channel or double-channel impeller design, coupled with a well-engineered flow path geometry, effectively enhances solid particle handling capacity and reduces clogging risks. With mechanical seals made from abrasion-resistant hard alloys, the pump guarantees long-lasting, stable operation, especially in harsh sewage conditions. The pump is ideal for various applications, offering an efficient, compact solution that ensures reliable service in complex drainage systems.
Typical Applications
The LW/WL Non-Clogging Vertical Sewage Pump is suitable for the following applications:
-
Industrial wastewater discharge and treatment systems
-
Residential sewage pumping stations
-
Municipal sewage treatment plant discharge systems
-
Civil defense and emergency drainage systems
-
Sewage discharge in hospitals, hotels, and public buildings
-
Municipal engineering and construction site drainage
-
Auxiliary dewatering in mining operations
-
Rural biogas pits and agricultural irrigation
This pump is designed for handling sewage, wastewater with solid particles, sludge, wood chips, starch, minerals, and other suspended solids, as well as clean water or mildly corrosive liquids.
System & Operation
Components & Supply
-
Single or double-channel impeller design, improving the ability to handle solid particles and fibrous media.
-
Abrasion-resistant hard alloy mechanical seals, ensuring long-term reliable performance.
-
Compact structure with low noise, small footprint, and easy maintenance, enabling quick component replacement.
-
Optional fully automatic control panel for start/stop operation based on liquid level changes, reducing the need for manual intervention.
Technical Specifications
Operating Conditions
-
Liquid Temperature:
• Standard Pump: ≤ 40°C
• Hot Water Pump: ≤ 80°C (special applications can meet up to 120°C) -
Ambient Temperature: ≤ +40°C
-
Maximum Working Pressure: 10 bar
-
Maximum Allowable Inlet Pressure: Limited by system working pressure
-
Fluid Requirements:
• Clean, low-viscosity, non-flammable, sulfur-free liquids, free from solid particles or fibers
• Suitable for pumping mineral water, softened water, purified water, light oils, and mild chemical fluids
• If the liquid’s density or viscosity exceeds that of water, a higher-rated motor should be selected
• The pump’s suitability for specific liquids depends on factors such as chloride content, pH, temperature, and solvent/oil content
Service Conditions
-
Installation Altitude: Must not exceed 1000 meters; for higher elevation applications, specify at the time of order for proper configuration.
-
The pump must not be used in flammable or explosive environments, nor should it handle combustible liquids.
-
Installation should be in a well-ventilated, dry, and vibration-free location.
-
Maximum ambient temperature should not exceed +40°C.
Protection Functions
-
The motor should be equipped with overload protection, phase failure protection, and overheat protection devices to prevent damage under abnormal conditions.
-
Dry-run protection is recommended to prevent mechanical seal failure in case of insufficient water supply.
-
Pressure switches or variable frequency drives (VFDs) should be used to maintain safe pressure ranges.
-
Check valves and anti-backflow devices must be installed to prevent damage caused by reverse flow after shutdown.
Selection Criteria
-
Select the pump model and number of stages based on required flow rate and head.
-
Choose appropriate wetted materials (e.g., SS304, SS316L) based on fluid temperature, pH, and chloride content.
-
Select sealing structure (mechanical seal or packing seal) based on the fluid’s corrosive properties.
-
Ensure installation space and piping layout compatibility with the horizontal configuration.
-
If the pumped liquid has higher viscosity or density than water, a higher-rated motor should be selected to meet the required shaft power.
Installation & Dimensions
Outline Drawing
Performance Data
|
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
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
- 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.