Introduction
The Submersible Recirculation Pump is a low-head, high-flow-rate device used in wastewater treatment plants and industrial circulation systems, specifically designed for in-tank reflux and circulating oxygenation.
Model Description
For example:
SRP400.740-M8/1.5D-S/S
SRP – Series name
400 – Impeller diameter (mm)
740 – Impeller rotational speed
M – Motor configuration
8 – Number of motor stages
1.5 – Motor power (kW)
D – Drive type: D = Direct-connected motor
S – Pump material: G = HT200; S = 0Cr19Ni9; T = 022Cr17Ni12Mo2
S – Mounting system material: C = Carbon steel; S = 0Cr19Ni9; T = 022Cr17Ni12Mo2
Product Features
Multiple Material Options
Pump body materials include FC200, SUS304, SUS316, and SUS316L, suitable for various water qualities with pH levels of 5–9.
Anti-clogging Design
Utilizing a large-channel anti-winding impeller and an automatic coupling structure, maintenance can be performed without going down into the well, providing excellent anti-clogging performance.
Why Choose Us
Production Capacity: 15,000㎡ factory area, 5 production lines, annual output of 10,000 water pumps and 5,000 blowers.
Quality Assurance: ISO 9001 and CE/TUV certified, full-process quality control, 100% finished product qualification rate.
Technology R&D: 20 engineers and 10 technicians, 15 patents, supporting new product development and non-standard customization.
Supply Chain and Inventory: 50+ long-term suppliers, key components manufactured in-house, common raw material inventory ≥3 months of production.
After-sales Service: Provides 24-hour technical response, 72-hour on-site service, and long-term maintenance support.
Technical Data
| Power supply | 3φ 380V 50Hz | Medium temperature | 0-40℃ |
| Frequency | 35-50Hz T | Density | ≤1.05×10 3 kg/m 3 |
| Working mode | S1 | PH scope | 5-9 |
| Protection level | IP68 | Maximum immersion depth | 20m |
| Insulation level | F level (H level is optional) | Installation method | vertical installation |
Structural Diagram

|
No. |
Name |
Material |
|
1 |
Diversion system |
SUS304 |
|
2 |
Load ring |
SUS304 |
|
3 |
SRP Pump |
SUS304 |
|
4 |
Roller assembly |
Nylon 66 |
|
5 |
Nameplate |
SUS304 |
|
6 |
Flange on wall-through pipe |
Q235 |
|
7 |
Cable fixing device |
|
Performance Curve

Installation Diagram




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