Grundfos S Range Cast-Iron Submersible Pumps for Sewage & Wastewater
The Grundfos S Range consists of heavy-duty submersible sewage pumps fitted with channel or SuperVortex impellers, delivering pumping power on any scale from 5.5 to 520 kW across 9 frame sizes. S pumps form the backbone in many sewage systems worldwide, chosen for their strength, durability, and innovative features such as the patented SmartTrim impeller clearance adjustment system. Designed to handle unscreened raw sewage or raw water in wastewater infrastructure and industrial applications, the S Range scope enables sewage and liquid handling from local pumping stations to major municipal installations.
As an authorized Grundfos Water Pump Dealer in Dubai, we supply the complete S Range with genuine warranty and technical support across the UAE.
Technical Specifications
Power & Frame Size Range
| Frame Size | Power Range | Application Scale |
|---|---|---|
| 50 | 5.5 kW+ | Small installations |
| 54 | Various | Local stations |
| 58 | Various | Medium duty |
| 62 | Various | Medium-large |
| 66 | Various | Large installations |
| 70 | Various | Heavy duty |
| 72 | Various | Industrial scale |
| 74 | Various | Major stations |
| 78 | Up to 520 kW | Large-scale municipal |
Motor Range
| Parameter | Specification |
|---|---|
| Minimum Power | 5.5 kW |
| Maximum Power | 520 kW |
| Frame Sizes | 9 sizes available |
| Frequency | 50 Hz |
Performance Overview (50 Hz)
Flow & Head Range
| Flow Rate (l/s) | Flow Rate (m³/h) | Head Range (m) | Frame Size Options |
|---|---|---|---|
| 5-20 | 20-80 | 5-140 | 50 |
| 15-40 | 60-150 | 8-100 | 54 |
| 30-80 | 100-300 | 10-80 | 58 |
| 50-150 | 200-600 | 12-70 | 62 |
| 100-300 | 400-1000 | 15-60 | 66 |
| 200-500 | 700-1800 | 20-55 | 70 |
| 300-700 | 1000-2500 | 25-50 | 72 |
| 500-1000 | 1800-3500 | 30-45 | 74 |
| 700-1500 | 2500-4000+ | 35-40 | 78 |
Maximum Performance
| Parameter | Value |
|---|---|
| Maximum Flow | Up to 4000 m³/h (approx. 3000 l/s) |
| Maximum Head | Up to 140 m |
| Power Range | 5.5 – 520 kW |
Impeller Options
| Impeller Type | Application | Benefit |
|---|---|---|
| Channel Impeller | Standard sewage | Reliable solids passage |
| SuperVortex Impeller | Heavy-duty sewage | Superior non-clog performance |
Material Options
| Version | Material | Motor Size | Application |
|---|---|---|---|
| Standard | Cast Iron | 5.5 – 520 kW | Normal sewage/wastewater |
| Stainless Steel | Stainless Steel | Up to 21 kW | Corrosive liquids |
Key Features & Benefits
SmartTrim Impeller Clearance Adjustment
| Feature | Benefit |
|---|---|
| Patented System | Exclusive Grundfos technology |
| Adjustment Method | Turn a few screws |
| Result | Maximum pump efficiency restored instantly |
| Maintenance | Minimum effort required |
Double Bearing System
| Feature | Benefit |
|---|---|
| Lower Bearings | Double for double safety |
| Additional Bearing | Radial bearing on certain models |
| Result | Extended pump lifespan |
Watertight Cable Entry
| Feature | Benefit |
|---|---|
| Design | Watertight entry point |
| Edge Design | Rounded edges |
| Protection | Prevents liquid ingress at vulnerable spot |
| Cable Protection | Prevents cable wear |
SmartSeal Gasket System
| Feature | Benefit |
|---|---|
| Connection Point | Pump to auto-coupling |
| Seal Type | Grundfos SmartSeal gasket |
| Result | Completely leak-proof connection |
Double Mechanical Shaft Seal
| Seal Position | Material | Function |
|---|---|---|
| Primary Seal | SiC/SiC rings | Main protection |
| Secondary Seal | SiC/Carbon rings | Backup protection |
| Chamber | Intermediate oil chamber | Keeps liquid away from motor |
Moisture Detection System
| Feature | Benefit |
|---|---|
| Monitoring | Motor enclosure monitoring |
| Response | Automatic power cut-off |
| Protection | Prevents leakage-related damage |
Installation Options
Submersible Installation
| Type | Application |
|---|---|
| Temporary | Construction, emergency pumping |
| Permanent | Fixed pumping stations |
Dry Installation
| Orientation | Application | Requirement |
|---|---|---|
| Vertical | Standard dry pit | Cooling jacket |
| Horizontal | Space-constrained | Cooling jacket |
Installation Accessories
| Accessory | Function |
|---|---|
| Auto-Coupling | Quick connect/disconnect |
| Base Stand | Wet well mounting |
| Ring Stand | Alternative mounting |
Applications
Sewage Pumping Stations
- Local pumping stations
- Main pumping stations
- Transfer stations
- Lift stations
Wastewater Treatment Plants
- Influent pumping
- Process water transfer
- Sludge handling
- Return activated sludge
Raw/Potable Water
- Raw water intake
- Water distribution
- Transfer pumping
- Reservoir systems
Industrial Applications
- Process water
- Corrosive liquids (stainless steel version)
- Manufacturing wastewater
- Industrial effluent
Large-Scale Buildings
- Commercial complexes
- Car parks (basement drainage)
- Hotel facilities
- Shopping centres
- Hospitals
Building Facilities
- Underground drainage
- Basement pumping
- Service areas
- Mechanical rooms
Frame Size Selection Guide
| Application Scale | Recommended Frame | Power Range |
|---|---|---|
| Small residential | 50 | 5.5 kW+ |
| Local stations | 54-58 | Medium |
| Medium municipal | 62-66 | Medium-High |
| Large municipal | 70-72 | High |
| Major infrastructure | 74-78 | Up to 520 kW |
Pump Selection by Application
| Application | Flow Requirement | Head Requirement | Recommended Frame |
|---|---|---|---|
| Building basement | Low-Medium | Medium-High | 50-54 |
| Local lift station | Medium | Medium | 54-62 |
| Municipal transfer | High | Medium | 66-70 |
| Main pumping station | Very High | Medium-Low | 72-78 |
| Industrial process | Variable | Variable | Based on duty |
| Corrosive liquids | Up to 21 kW motors | Variable | Stainless steel version |
Why Grundfos S Range?
Strength for Your Systems
Cast-iron construction delivers the durability required for continuous sewage and wastewater duty in demanding environments.
Comprehensive Coverage
Nine frame sizes with motors from 5.5 to 520 kW handle everything from small building facilities to major municipal pumping stations.
SmartTrim Technology
Patented impeller clearance adjustment maintains maximum efficiency with minimal maintenance effort—a few turns restore peak performance.
Complete Leak Protection
Double mechanical shaft seals (SiC/SiC + SiC/Carbon), SmartSeal gasket system, watertight cable entry, and moisture detection create multiple protection barriers.
Flexible Installation
Submerged (temporary or permanent) or dry-installed (vertical or horizontal with cooling jacket) configurations suit any application requirement.
Corrosive Liquid Capability
Stainless steel versions with motors up to 21 kW handle aggressive and corrosive liquids safely.
System Design Support
Grundfos engineering expertise helps ensure correct sizing, avoid structural design errors, and optimize construction costs.
Liquid Handling Capability
| Liquid Type | Suitability |
|---|---|
| Unscreened Raw Sewage | ✓ Primary application |
| Raw Water | ✓ Suitable |
| Wastewater | ✓ Suitable |
| Corrosive Liquids | ✓ Stainless steel version |
| Clean Water | ✓ Suitable |
| Industrial Effluent | ✓ Suitable |
Water Utility Solutions
The Grundfos S Range supports comprehensive water utility applications:
| Application Area | S Range Role |
|---|---|
| Raw Water Intake | Intake pumping |
| Drinking Water Treatment | Transfer pumping |
| Water Distribution | Distribution boosting |
| Wastewater Transport | Sewage transfer |
| Flood Control | Emergency pumping |
| Wastewater Treatment | Process pumping |
Grundfos Accessories & Parts
Maintain optimal S Range pump performance with original components including mechanical shaft seals (SiC/SiC, SiC/Carbon), impellers (channel, SuperVortex), SmartTrim adjustment kits, SmartSeal gaskets, auto-couplings, base stands, ring stands, cooling jackets, moisture detectors, cable entry seals, and motor assemblies. We stock replacement parts for all 9 frame sizes.
Select Grundfos Pumps
Browse our complete inventory of Grundfos S Range submersible sewage 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:
- Frame size and motor selection based on flow and head requirements
- Channel vs SuperVortex impeller recommendations
- Cast iron vs stainless steel material selection
- Submersible vs dry installation guidance
- System design consultation
- Competitive quotations
- Delivery schedules
Pumping on Any Scale
The Grundfos S Range delivers heavy-duty submersible sewage pumping from 5.5 to 520 kW across 9 frame sizes, handling flows up to 4000 m³/h and heads up to 140 metres. With cast-iron or stainless steel construction, channel or SuperVortex impellers, patented SmartTrim efficiency adjustment, double mechanical shaft seals, SmartSeal leak-proof connections, and flexible submerged or dry installation options, the S Range forms the backbone of sewage systems worldwide—from building facilities and local lift stations to major municipal pumping infrastructure and industrial wastewater applications.