Product Overview
QDX / QXT Submersible Sewage Pump is a compact submersible centrifugal pump designed for light-duty wastewater and drainage applications in small-scale systems.
It addresses limited installation space, low-lift drainage requirements, and intermittent sewage transfer in residential and light industrial environments.
It is suitable for household wastewater pits, garden drainage, small construction sites, aquaculture ponds, and temporary water removal applications.
Model Designation
Applications
Typical Operating Conditions
• Residential sewage pits and household drainage wells
• Small-scale basement water removal
• Garden irrigation and drainage systems
• Aquaculture pond circulation and drainage
• Temporary drainage at construction sites
Engineering Advantages
• Compact submersible structure reduces installation footprint
• Integrated motor-pump assembly improves alignment stability
• Semi-open or vortex impeller enhances small solid passage capability
• Double mechanical seal arrangement improves operational reliability
• Lightweight design facilitates mobility and flexible installation
System Components
QDX / QXT Submersible Sewage Pump ：
The QDX / QXT Submersible Sewage Pump mainly consists of:
• Pump casing
• Impeller
• Pump shaft
• Mechanical seal assembly
• Oil chamber
• Bearing assembly
• Submersible motor
• Cable sealing system
Technical Specifications
Service Conditions
• Medium: Wastewater containing soft solids
• Intermittent or short-duration continuous operation
• Submerged installation within rated immersion depth
Operating Conditions
Flow Rate: 1.5 – 15 m³/h
Head: 2 – 60 m
Power Range: 0.37 – 5.5 kW
Speed: 3000 rpm
Liquid Temperature: ≤ 40°C
Working Pressure: ≤ 0.3 MPa
Detailed parameter tables are provided below.
Performance Parameters
|
No.
|
Model
|
Flow Rate (m3/h)
|
Head (m)
|
Power (kW)
|
Voltage (V)
|
Current (A)
|
Speed (r/min)
|
Overall Dimensions (mm)
|
Pipe Inner Diameter (mm)
|
Recommended Head Range (m)
|
|
1
|
QDX1.5-17-0.37(T)
|
1.5
|
17
|
0.37
|
220
|
2.87
|
3000
|
345×195
|
25
|
4-19
|
|
2
|
QDX1.5-25-0.55(T)
|
1.5
|
2
|
0.55
|
220
|
4.07
|
3000
|
340×220
|
25
|
17-26
|
|
3
|
QDX3-18-0.55(T)
|
3
|
18
|
0.55
|
220
|
4.07
|
3000
|
340×210
|
32
|
5-21
|
|
4
|
QDX10-12-0.55(T)
|
10
|
12
|
0.55
|
220
|
4.07
|
3000
|
340×220
|
38
|
7-15
|
|
5
|
QDX1.5-32-0.75(T)
|
1.5
|
32
|
0.75
|
220
|
5.24
|
3000
|
365×240
|
25
|
17-32
|
|
6
|
QDX3-24-0.75(T)
|
3
|
24
|
0.75
|
220
|
5.24
|
3000
|
365×220
|
32
|
14-26
|
|
7
|
QDX8-18-0.75(T)
|
8
|
18
|
0.75
|
220
|
5.24
|
3000
|
365×220
|
38
|
15-19
|
|
8
|
QDX10-16-0.75(T)
|
10
|
16
|
0.75
|
220
|
5.24
|
3000
|
365×220
|
51
|
10-19
|
|
9
|
QDX15-10-0.75(T)
|
15
|
10
|
0.75
|
220
|
5.24
|
3000
|
385×240
|
64
|
3-11
|
|
10
|
QDX6-25-1.1*
|
6
|
25
|
1.1
|
220
|
7.02
|
3000
|
410×365
|
61
|
13-26
|
|
11
|
QX8-18-0.75(T)
|
8
|
18
|
0.75
|
380
|
1.99
|
3000
|
365×220
|
38
|
15-19
|
|
12
|
QX6-25-1.1*
|
6
|
25
|
1.1
|
380
|
2.74
|
3000
|
410×265
|
51
|
13-26
|
|
13
|
QX10-34-2.2*
|
10
|
34
|
2.2
|
380
|
5.11
|
3000
|
495×295
|
51
|
18-36
|
|
14
|
QX10-34-2.2(T)
|
10
|
34
|
2.2
|
380
|
5.11
|
3000
|
485×280
|
51
|
18-36
|
|
15
|
QX12.5-50-4*
|
12.5
|
50
|
4
|
380
|
8.8
|
3000
|
585×300
|
51
|
35-53
|
|
16
|
QX12.5-60-5.5*
|
12.5
|
60
|
5.5
|
380
|
11.7
|
3000
|
630×300
|
51
|
50-61
|
How to Select a Pump Model
• Determine required drainage flow and lifting height
• Evaluate maximum solid particle size
• Confirm installation depth and cable configuration
• Assess duty cycle (intermittent or continuous)
• Verify discharge diameter compatibility
Engineering Notes
• Not suitable for highly abrasive slurry
• Long-duration continuous operation should consider motor temperature rise
• Excess fibrous materials may affect impeller performance
• Installation base must be stable to prevent vibration
• Pump must operate within rated hydraulic range
Compliance & Quality Assurance
• Factory hydraulic performance testing
• Motor insulation resistance inspection
• Seal leakage inspection
• Dynamic balance testing of rotating parts
• Casing hydrostatic pressure testing
• Optional third-party inspection available
Safety Notice
• Do not operate under dry-running condition
• Ensure pump is fully submerged before startup
• Do not exceed rated discharge pressure
• Disconnect power before maintenance
OEM & Customization
This pump series supports engineered configuration and duty-based matching. Technical adjustments can be made according to system requirements and installation conditions.
Available options include:
• Motor voltage & frequency
• Impeller type selection
• Mechanical seal configuration
• Cable length customization
• Surface coating protection
Configuration is determined based on duty point and project specifications.
FAQs
Q: Can the pump operate under VFD control?
A: Yes, within rated motor load and cooling limits.
Q: What is the maximum allowable solid particle size?
A: It depends on the impeller channel design and model specification.
Q: What is the maximum immersion depth?
A: Within rated installation depth defined by the model.
Q: What sealing configuration is used?
A: Single or double mechanical seal with oil chamber protection.
Q: What is the maximum liquid temperature?
A: ≤ 40°C for standard configuration.
Q: What rotational speed is standard?
A: 2850 rpm.
Q: Is it suitable for continuous operation?
A: It is suitable for intermittent or light continuous duty within rated limits.