Grundfos SRP Range Submersible Recirculation Pumps for High-Flow Applications
The Grundfos range of recirculation pumps is the final result of decades of engineering experience. Created to handle large flows against low head, the SRP models are equally suitable for wastewater treatment plants and flood control. Built for strength and reliability, the SRP keeps things moving—whether for steady process support or emergency relief. With flows up to 5,000 m³/h and motors from 0.8 to 24 kW, SRP units share many features with the AMG and AFG gear-driven mixers and flowmakers, making them instantly familiar to service staff and facilitating easy maintenance. All materials are selected for strength, and every component is thoroughly tested for durability before assembly.
As an authorized Grundfos Water Pump Dealer in Dubai, we supply the complete SRP range with genuine warranty and technical support across the UAE.
Technical Specifications
| Parameter | Specification |
|---|---|
| Maximum Flow Rate | 5,000 m³/h (1,400 l/s) |
| Maximum Head | 2.1 m (21 kPa) |
| Motor Power Range | 0.8 – 24 kW |
| Frequency | 50 Hz |
| Pump Types | 4 basic types |
| Pipe Diameters | DN 300, DN 500, DN 800 mm |
Model Range Overview
| Model Series | Pipe Diameter | Application |
|---|---|---|
| SRP.XX.30.XXX | DN 300 mm | Smaller basins, lower flow |
| SRP.XX.50.XXX | DN 500 mm | Medium basins, medium flow |
| SRP.XXX.80.XXX | DN 800 mm | Large basins, high flow |
Performance Overview (50 Hz)
SRP.XX.30.XXX.08(.E) – DN 300
| Flow Range (m³/h) | Flow Range (l/s) | Head Range (m) | Pressure (kPa) |
|---|---|---|---|
| 0-500 | 0-140 | 0-0.8 | 0-8 |
SRP.XX.30.XXX.25(.E) – DN 300
| Flow Range (m³/h) | Flow Range (l/s) | Head Range (m) | Pressure (kPa) |
|---|---|---|---|
| 0-1000 | 0-280 | 0-1.0 | 0-10 |
SRP.XX.50.XXX.27(.E) – DN 500
| Flow Range (m³/h) | Flow Range (l/s) | Head Range (m) | Pressure (kPa) |
|---|---|---|---|
| 500-2500 | 140-700 | 0-0.8 | 0-8 |
SRP.XXX.80.XXX.11(.E) – DN 800
| Flow Range (m³/h) | Flow Range (l/s) | Head Range (m) | Pressure (kPa) |
|---|---|---|---|
| 1500-5000 | 420-1400 | 0-0.6 | 0-6 |
Key Features & Benefits
Triple Sealing System
| Feature | Benefit |
|---|---|
| Innovative Design | Maximum protection of mechanical shaft seal |
| Triple Protection | Three-layer sealing for maximum reliability |
| Durability | Extended pump service life |
| Labyrinth Seal | Propeller hub forms additional seal protection |
Innovative Bracket Design
| Feature | Benefit |
|---|---|
| Top/Bottom Fixation | Suitable for wide range of applications |
| Optimised Design | Based on installer and customer input |
| Easy Installation | Quick mounting in almost any setting |
| Stable Operation | Promotes reliable, vibration-free running |
Active Electronic Leak Detector
| Feature | Benefit |
|---|---|
| Early Detection | Indicates possible liquid in gear housing |
| Sensitivity | Detects even smallest quantity of liquid |
| Service Warning | Ample time for service before damage occurs |
| Protection | Prevents costly motor failures |
Two Tapered Roller Bearings
| Feature | Benefit |
|---|---|
| Bearing Type | Tapered roller bearings |
| Load Handling | Accommodates both axial and radial forces |
| Gear Shaft Support | Optimal shaft support for heavy-duty operation |
| Durability | Extended bearing and gear life |
Choice of Propellers
| Feature | Benefit |
|---|---|
| Blade Options | 2 or 3-blade hydrodynamic propellers |
| Efficiency | High hydraulic efficiency |
| Non-Clogging | Designed for trouble-free operation |
| Sealing | Propeller hub forms labyrinth seal |
Motor Protection
| Feature | Benefit |
|---|---|
| Overload Protection | Three thermal switches or thermistors |
| Overheating Protection | Sensors in each motor winding |
| Automatic Cutoff | Prevents motor damage |
| Reliability | Continuous protection during operation |
Planetary Gear
| Feature | Benefit |
|---|---|
| Design | Slim gear housing |
| Hydrodynamics | Optimal flow properties |
| Efficiency | Reduced hydraulic resistance |
| Durability | Robust gear construction |
Watertight Cable Entry
| Feature | Benefit |
|---|---|
| Seal Type | Self-shaping seal |
| Protection | Prevents cable damage |
| Watertight | Complete moisture protection |
| Reliability | Secure electrical connection |
Applications
Wastewater Treatment Plants
- Activated sludge recirculation
- Basin flow maintenance
- Process water circulation
- Aeration basin mixing support
- Large-scale basin flow control
Water Reservoirs
- Reservoir circulation
- Water quality maintenance
- Stratification prevention
- Turnover enhancement
Flood Control
| Function | Capability |
|---|---|
| Volume Handling | Shift large water volumes quickly |
| Reliability | Dependable emergency operation |
| Protection | Protects land and settlements |
| Response | Rapid deployment for flood relief |
Industrial Process Control
- Process water recirculation
- Cooling water circulation
- Industrial basin flow maintenance
- Manufacturing process support
Installation Features
Optimized Mounting Bracket
| Feature | Description |
|---|---|
| Fixation Options | Top or bottom mounting |
| Versatility | Suitable for wide range of applications |
| Development | Based on installer and customer feedback |
| Stability | Promotes stable, reliable operation |
System Integration
| Feature | Capability |
|---|---|
| Grundfos CUE | Simple and advanced control features |
| Control Options | Speed control and monitoring |
| Integration | Seamless system connectivity |
| Customization | Control matched to your demands |
Pump Selection Guide
| Application | Flow Requirement | Recommended Model |
|---|---|---|
| Small basin circulation | Up to 500 m³/h | SRP.XX.30.XXX.08 |
| Medium basin circulation | 500-1000 m³/h | SRP.XX.30.XXX.25 |
| Large basin circulation | 1000-2500 m³/h | SRP.XX.50.XXX.27 |
| Very large basins | 2500-5000 m³/h | SRP.XXX.80.XXX.11 |
| Flood control | High volume | SRP DN 500 or DN 800 |
Compatibility with Grundfos Range
| Related Product | Shared Features |
|---|---|
| AMG Mixers | Gear-driven design, service familiarity |
| AFG Flowmakers | Component compatibility, easy maintenance |
| CUE Controller | Speed control, system integration |
Model Designation
Example: SRP.XX.30.XXX.08(.E)
| Code | Meaning |
|---|---|
| SRP | Submersible Recirculation Pump |
| XX | Configuration variant |
| 30/50/80 | Pipe diameter (DN 300/500/800 mm) |
| XXX | Specific model variant |
| 08/11/25/27 | Motor power indicator |
| .E | E-pump variant (where applicable) |
Why Choose Grundfos SRP?
Decades of Engineering Experience
The SRP range represents the culmination of Grundfos water handling expertise, delivering proven performance in demanding recirculation applications.
Built for Strength and Reliability
All materials selected for strength with every component thoroughly tested for durability—keeping things moving for steady process support or emergency relief.
High-Flow, Low-Head Specialist
Designed specifically for recirculation with flows up to 5,000 m³/h and optimized for low-head applications up to 2.1 metres.
Triple Sealing System
Maximum mechanical shaft seal protection through innovative triple sealing provides exceptional reliability and extended service life.
Easy Installation
Optimized mounting bracket with top/bottom fixation options makes installation quick and simple in almost any setting.
Familiar Service Platform
Shared features with AMG and AFG gear-driven mixers and flowmakers mean instant familiarity for service staff and easy maintenance.
Electronic Leak Detection
Active leak detector provides early warning of potential issues, allowing ample service time before damage occurs.
Grundfos Accessories & Parts
Maintain optimal SRP performance with original components including propellers (2 and 3-blade), mechanical shaft seals, triple sealing system components, tapered roller bearings, planetary gear assemblies, leak detectors, thermal switches, thermistors, cable entry seals, and mounting brackets. We stock replacement parts for all SRP variants.
Select Grundfos Pumps
Browse our complete inventory of Grundfos SRP recirculation pumps. As Grundfos Pump Suppliers in Dubai, we provide competitive pricing, technical consultation, system design support, and prompt delivery across Dubai, Sharjah, Abu Dhabi, Ajman, and all UAE locations.
Contact us for:
- Model selection based on flow and head requirements
- DN 300, DN 500, or DN 800 sizing guidance
- Propeller selection (2 or 3-blade)
- CUE controller integration
- System design consultation
- Competitive quotations
- Delivery schedules
Lasting Movement for High-Flow Applications
The Grundfos SRP range delivers reliable recirculation with flows up to 5,000 m³/h (1,400 l/s), heads up to 2.1 metres (21 kPa), motor power from 0.8 to 24 kW, and three pipe diameter options (DN 300, 500, 800 mm). Featuring triple sealing system protection, innovative bracket design with top/bottom fixation, active electronic leak detection, two tapered roller bearings, hydrodynamic 2 or 3-blade propellers, planetary gear with slim housing, motor protection with thermal switches/thermistors, and compatibility with Grundfos CUE control—the SRP keeps things moving in wastewater treatment plants, water reservoirs, flood control systems, and industrial process applications worldwide.