Overview of Grundfos SE & SL Wastewater Pump Ranges
The Grundfos SE and SL ranges represent state-of-the-art hydraulic engineering designed specifically for demanding wastewater applications. These pumps deliver exceptional performance across varying loads while maintaining superior free passage and operational reliability.
SE Range vs. SL Range – Installation Options
| Feature | SE Range | SL Range |
|---|---|---|
| Submersible Installation | Yes | Yes |
| Dry Installation | Yes (Vertical & Horizontal) | No |
| Auto-Coupling Guide Rail System | Yes | Yes |
| Fixed Pipe Connection | Yes | Yes |
| Freestanding/Transportable | Yes | Yes |
Performance Range & Technical Specifications
Combined SE & SL Pump Program – Performance Data
| Parameter | SE/SL 0.9–11 kW | SE/SL 9–30 kW |
|---|---|---|
| Power Range | 0.9 – 11 kW | 9 – 30 kW |
| Flow Rate (Q) | 5 – 100 l/s (20 – 400 m³/h) | 15 – 300 l/s (60 – 600 m³/h) |
| Head (H) | 5 – 30 m | 6 – 70 m |
| Frequency | 50 Hz | 50 Hz |
| Motor Poles | 2, 4, 6-Pole | 2, 4, 6-Pole |
Revolutionary S-TUBE® Impeller Technology
The patented S-TUBE® impeller developed by Grundfos represents a breakthrough in wastewater pump hydraulics. This innovative design features a tube-shaped impeller with a matching pump housing that maintains the tube shape throughout the entire pump, delivering superior efficiency and reliability.
S-TUBE® vs. Semi-Open Impeller – Performance Comparison
| Performance Parameter | S-TUBE® Impeller | Semi-Open Impeller |
|---|---|---|
| Best Efficiency Point (BEP) – Hydraulic | 83.3% | 78.9% |
| Best Efficiency Point (BEP) – Overall | 74.5% | 68.6% |
| Curve Above 75% Hydraulic Efficiency | ~55% | ~22% |
| Free Passage | 110 mm | 50 mm |
S-TUBE® Design Benefits
- Vaneless closed channel-impeller design prevents clogging
- No leading edges that could trap debris
- Wet-balanced for dramatically lower vibration levels
- Two-channel S-TUBE® design for larger capacities further reduces vibration
- Threaded sealing system (patent pending) for effective and robust sealing
- Spherical free passage up to 125 mm
Impeller Selection Guide
| Application Type | Recommended Impeller | Free Passage | Dry Matter Content |
|---|---|---|---|
| Continuous Operation | S-TUBE® | Up to 125 mm spherical | Up to 3% |
| Intermittent Operation | SuperVortex | Up to 100 mm spherical | Over 3% |
Applications – Where to Use Grundfos SE & SL Pumps
The versatile SE and SL pump ranges handle a wide variety of fluids and applications:
Water Types
- Drainage and surface water
- Domestic wastewater
- Municipal wastewater
- Industrial wastewater
- Process water
Ideal Applications
- Water utility operations
- Network pumping stations
- Wastewater treatment plants
- Industrial facilities
- Commercial buildings
Smart Design Features for Reliability & Efficiency
| Feature | Description | Benefit |
|---|---|---|
| SmartRing | Replaceable wear ring between impeller and volute | Higher operational reliability, improved durability, maintains hydraulic efficiency |
| SmartTrim | Patented easy adjustment of factory-set impeller clearance | Maintains maximum pump efficiency, increased reliability, no special tools required |
| Double Mechanical Shaft Seal | Primary and secondary seal in one cartridge unit | Longer seal lifetime, easy fail-proof field replacement without special tools |
| Short Rotor Shaft | Compact motor construction | Reduced vibrations, protected shaft seals and bearings, longer operational lifetime |
| Easy-to-Remove Cable Entry | Innovative patented stainless steel cable entry | Prevents liquid penetration, easy service dismantling |
| One Cable to Pump | Single cable for sensors and power supply | Simplified installation, commissioning, and maintenance |
| Easy-to-Open Clamp (up to 11 kW) | Stainless steel clamp assembly system | No tools required, quick disassembly for maintenance |
| Liquidless Motor Cooling (SE up to 11 kW) | Solid-block stator housing with built-in cooling conduits | Continuous operation in dry installations |
| SmartSeal | Patented auto-coupling gasket | Completely leak-proof connection to base unit |
| Lifting Handle | Optimum point-of-balance design | Correct lifting, protects auto-coupling sealing |
Motor Efficiency & Energy Savings
All SE/SL wastewater pumps are equipped with high-efficiency motors built using IE3 components conforming to IEC standards. Combined with the innovative S-TUBE® impeller, intelligent controls, and smart solutions like SmartRing, these pumps deliver the best total wire-to-water efficiency currently available in the market.
Material Options
| Pump Range | Material Variants Available |
|---|---|
| SE Pumps |
|
| SL Pumps | Stainless steel impeller option available |
Quality Standards & Testing
Grundfos combines decades of experience in test-driven and simulation-driven development to ensure every pump meets the highest quality standards:
- Extensive field testing before market release
- All pumps performance tested to ISO 9906:2012 Acceptance Grade 3B (minimum)
- Testing up to Grade 1U available on request
- Engineered-to-Order products available for specific customer requirements
Refurbishment & Retrofit Compatibility
The SE and SL pump ranges are designed with a small footprint, making them ideal for refurbishment projects. You can replace existing wastewater pumps with new SE and SL models without necessarily changing your system or sump. This means immediate access to high-efficiency pump operation with minimal investment.
Intelligent Pumping Solutions – Grundfos iSOLUTIONS
Grundfos iSOLUTIONS integrates intelligent control capabilities with SE/SL wastewater pumps:
- Integrated intelligent controller in AUTOADAPT pumps
- Dedicated wastewater controller for larger pumps
- Compatible with motor protection systems
- Works with variable frequency drives (VFDs)
- Configurable and scalable for local network requirements
Why Choose Grundfos SE & SL Pumps from Online Stores In Dubai?
As an authorized Grundfos Water Pump Dealer In Dubai, Online Stores In Dubai offers:
- Genuine Grundfos products with manufacturer warranty
- Competitive pricing across UAE
- Technical support and product consultation
- Fast delivery throughout Dubai and the Emirates
- Complete range of accessories and spare parts
- After-sales service support
Summary – Grundfos SE & SL Technical Quick Reference
| Specification | Value |
|---|---|
| Power Range | 0.9 – 30 kW |
| Motor Poles | 2, 4, 6-Pole |
| Frequency | 50 Hz |
| Flow Rate Range | 5 – 300 l/s (20 – 600 m³/h) |
| Head Range | 5 – 70 m |
| S-TUBE® Free Passage | Up to 125 mm spherical |
| SuperVortex Free Passage | Up to 100 mm spherical |
| Motor Efficiency | IE3 Components |
| Testing Standard | ISO 9906:2012 |
Ready to order Grundfos SE & SL wastewater pumps?
Contact Online Stores In Dubai today for pricing, availability, and technical consultation. Browse our complete Grundfos Water Pump collection for more pumping solutions.
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