Grundfos DWK Range Submersible Contractor Pumps for Dewatering & Drainage
The Grundfos DWK range of submersible contractor pumps combines durable performance with ease of installation, providing an immediate return on your dewatering solution investment. Featuring solid cast iron construction and narrow design, the DWK range is ideal for pits, temporary or fixed installations—in fact, any situation where effective dewatering is needed. When high-pressure pump performance unhindered by sand or other abrasives is required, or if available power supply is limited, the DWK range provides the effective dewatering solution for contractors and industrial applications.
As an authorized Grundfos Water Pump Dealer in Dubai, we supply the complete DWK range with genuine warranty and technical support across the UAE.
Technical Specifications
| Parameter | DWK-O | DWK-E |
|---|---|---|
| Frequency | 50 Hz | 50 Hz |
| Maximum Flow | Up to 400 m³/h | Up to 400 m³/h |
| Maximum Flow (l/s) | Up to 130 l/s | Up to 130 l/s |
| Maximum Head | Up to 100 m | Up to 100 m |
| Construction | Cast Iron | Cast Iron |
| Impeller Material | Stainless Steel High-Chrome | Stainless Steel High-Chrome |
| Discharge Type | Top-discharge | Top-discharge |
| Shaft Seal | Triple-system (Double mechanical + Lip seal) | Triple-system (Double mechanical + Lip seal) |
| Thermal Protection | Integrated circuit-cut | Integrated circuit-cut |
Model Variants
| Model | Description | Application Focus |
|---|---|---|
| DWK-O | Standard dewatering pump | General drainage and dewatering |
| DWK-E | Enhanced efficiency model | Standard contractor applications |
| DWK-R | Robust wear-resistant version | Abrasive conditions, construction sites |
Performance Overview
DWK-O / DWK-E Performance Range (50 Hz)
| Flow Rate (m³/h) | Flow Rate (l/s) | Head Range (m) |
|---|---|---|
| 50 | 14 | 5-100 |
| 100 | 28 | 5-90 |
| 150 | 42 | 5-75 |
| 200 | 56 | 5-60 |
| 250 | 69 | 5-45 |
| 300 | 83 | 5-30 |
| 350 | 97 | 5-20 |
| 400 | 111 | 5-10 |
Key Features & Benefits
Top-Discharge Connection Options
Top-discharge design with different connection types available for multiple use of the pump:
| Connection Type | Application |
|---|---|
| Hose Connection | Flexible temporary installations |
| Storz Connection | Quick-connect emergency dewatering |
| Flange Connection | Permanent fixed installations |
This versatility allows adaptation to different conditions and specific project needs.
High Efficiency Motor
The long-life motor used in the DWK range delivers:
| Benefit | Description |
|---|---|
| Lower Operating Costs | Energy-efficient operation reduces electricity consumption |
| Even Performance | Consistent output throughout operation |
| Extended Lifespan | Durable motor design for demanding applications |
Integrated Thermal Protection
The integrated circuit-cut protects the motor from overheating and operates independently:
- Automatic motor protection
- No constant monitoring required
- Self-resetting after cool-down
- Prevents motor burnout
Easy Maintenance Oil Plug
The ability to inspect oil condition in the seal chamber provides:
| Advantage | Benefit |
|---|---|
| Condition Monitoring | Visual inspection of seal health |
| Planned Maintenance | Schedule service before failures occur |
| Reduced Downtime | Proactive maintenance prevents breakdowns |
Highly Efficient Wear-Resistant Impeller
The stainless steel high-chrome impeller delivers:
- Maintained performance over extended periods
- Increased pump lifetime
- Resistance to abrasive particles
- Consistent hydraulic efficiency
Triple-System Shaft Seal
The advanced sealing system provides longer operation and less downtime:
| Seal Component | Function |
|---|---|
| Double Mechanical Seal | Primary shaft protection |
| Lip Seal | Secondary backup protection |
| Easy Replacement | Serviceable design |
Effective Dewatering – When and Where You Need It
The DWK range offers immediate return on your dewatering solution investment across diverse applications:
Underground Drainage Pits
| Requirement | DWK Solution |
|---|---|
| Limited Space | Narrow, compact design fits tight installations |
| High Pressure | Motor size matched to pressure capabilities |
| Reliability | Cast iron construction for demanding environments |
Courts Drainage Solutions
| Requirement | DWK Solution |
|---|---|
| High Pressure | Heads up to 100 metres |
| Space Constraints | Compact footprint for confined areas |
| Quick Response | Easy installation for rapid deployment |
Industrial Applications
| Requirement | DWK Solution |
|---|---|
| Process Water | Handles water from various industrial functions |
| Drainage Pits | Efficient pit emptying and transfer |
| Continuous Operation | Long-life motor for extended duty cycles |
Construction & Infrastructure (DWK-R)
| Requirement | DWK Solution |
|---|---|
| Wear Resistance | High-chrome impeller handles abrasives |
| Maintained Performance | Consistent output despite challenging conditions |
| Tunnels & Excavations | Robust design for underground work |
Applications
Building Construction
- Foundation dewatering
- Basement pit drainage
- Excavation water removal
- Rainwater management on sites
Infrastructure Projects
- Tunnel construction dewatering
- Underground parking drainage
- Metro and rail construction
- Bridge foundation work
Industrial Facilities
- Process water collection
- Manufacturing drainage systems
- Warehouse pit drainage
- Factory floor water removal
Sports & Recreation
- Sports court drainage
- Swimming pool construction
- Underground facility drainage
- Maintenance pit dewatering
Emergency Dewatering
- Flood response pumping
- Storm water removal
- Burst pipe recovery
- Disaster relief operations
Model Selection Guide
| Application | Conditions | Recommended Model |
|---|---|---|
| General drainage | Clean to slightly dirty water | DWK-O or DWK-E |
| Building pits | Limited space, high pressure needed | DWK-O or DWK-E |
| Construction sites | Sand, grit, abrasive particles | DWK-R |
| Tunnel construction | Heavy-duty, wear conditions | DWK-R |
| Industrial drainage | Process water with particles | DWK-R |
| Emergency pumping | Quick deployment needed | DWK-O (Storz connection) |
| Permanent installation | Fixed system | DWK-E (Flange connection) |
Selection by Performance Requirement
| Flow Requirement | Head Requirement | Application Example |
|---|---|---|
| Up to 100 m³/h | Up to 90 m | High-rise basement drainage |
| Up to 200 m³/h | Up to 60 m | Medium construction dewatering |
| Up to 300 m³/h | Up to 30 m | Large excavation pumping |
| Up to 400 m³/h | Up to 10 m | High-volume flood response |
Construction & Durability
Cast Iron Construction
The solid cast iron pump body provides:
| Feature | Benefit |
|---|---|
| Robust Structure | Withstands harsh jobsite conditions |
| Corrosion Resistance | Long service life in wet environments |
| Impact Resistance | Survives handling on construction sites |
| Narrow Design | Fits in pits and confined spaces |
Stainless Steel High-Chrome Impeller
| Feature | Benefit |
|---|---|
| Wear Resistance | Maintains efficiency with abrasive water |
| Corrosion Proof | Unaffected by aggressive water chemistry |
| High Efficiency | Optimized hydraulic design |
| Extended Life | Outlasts standard impeller materials |
Why Choose Grundfos DWK?
Durable Performance
Cast iron construction combined with stainless steel high-chrome impeller delivers long-term reliability in the most demanding dewatering applications.
High-Pressure Capability
Heads up to 100 metres enable effective drainage from deep excavations, basements, and underground facilities.
High-Volume Capacity
Flows up to 400 m³/h (130 l/s) handle large-scale dewatering requirements efficiently.
Versatile Connections
Multiple discharge connection options (hose, Storz, flange) adapt to any installation scenario.
Low Maintenance
Triple-system shaft seal, easy-access oil plug, and integrated thermal protection minimize service requirements.
Compact Design
Narrow construction fits in pits and confined spaces where larger pumps cannot operate.
Grundfos Accessories & Parts
Maintain optimal DWK pump performance with original components including mechanical seals, lip seals, impellers, motor assemblies, discharge fittings, hose connections, Storz couplings, and flange adapters. We stock replacement parts for all DWK variants.
Select Grundfos Pumps
Browse our complete inventory of Grundfos DWK submersible contractor pumps. As Grundfos Pump Suppliers in Dubai, we provide competitive pricing, technical consultation, and prompt delivery across Dubai, Sharjah, Abu Dhabi, Ajman, and all UAE locations.
Contact us for:
- Model selection based on flow and head requirements
- DWK-O vs DWK-E vs DWK-R recommendations
- Connection type guidance (hose, Storz, flange)
- Rental and purchase options for contractors
- Competitive quotations
- Delivery schedules
Enduring and Multifunctional Dewatering Solutions
The Grundfos DWK range delivers effective dewatering when and where you need it. With flows up to 400 m³/h, heads up to 100 metres, and durable cast iron construction with wear-resistant stainless steel impellers, these submersible contractor pumps handle everything from building drainage pits to major infrastructure construction projects. The narrow design, multiple connection options, and integrated protection features make DWK the trusted choice for contractors who demand reliable performance in challenging dewatering applications.