Grundfos LS/LSV Split Case Double Suction Pumps
The Grundfos LS and LSV series represent the pinnacle of split case pump technology, delivering exceptional efficiency and reliability for large-scale water transfer applications. These long-coupled, horizontal split case, double suction pumps are single-stage, non-self-priming, centrifugal volute pumps engineered for building services, water supply infrastructure, and industrial operations requiring high flow rates with maximum energy efficiency.
As an authorized Grundfos Water Pump Dealer in Dubai, we supply the complete LS and LSV range with genuine warranty and technical support across the UAE.
Technical Specifications
| Parameter | Specification |
|---|---|
| Motor Power | 1.1 kW – 2,800 kW |
| Flow Rate (Q) | Up to 10,000 m³/h |
| Head (H) | 8 – 165 metres |
| Liquid Temperature | 0°C – 100°C |
| Suction Port | DN65 – DN1000 |
| Discharge Port | DN50 – DN700 |
| Operating Pressure | 10 bar – 25 bar |
| Maximum Hydraulic Efficiency | 91.5% |
| Frequency Options | 50 Hz / 60 Hz |
Material Configuration
| Component | Standard Configuration | Optional Configuration |
|---|---|---|
| Pump Casing | Cast Iron / Ductile Iron | Cast Steel / Stainless Steel |
| Impeller | Stainless Steel | Bronze / Duplex Stainless Steel |
| Shaft | Stainless Steel | Duplex Stainless Steel |
| Wear Ring | Bronze / Brass | Cast Iron / Stainless Steel |
| Shaft Seal | Mechanical Seal | Stuffing Box |
| Low Voltage Motor | IE4, IE3 | IE5 |
LS vs LSV Configuration
| Feature | LS (Horizontal) | LSV (Vertical) |
|---|---|---|
| Orientation | Horizontal split case | Vertical in-line |
| Footprint | Standard floor space | Reduced floor space |
| Suction/Discharge | Radial ports | In-line ports |
| Best For | Standard installations | Space-constrained areas |
Key Features & Benefits
High Efficiency Across Wide Flow Range
LS/LSV pumps deliver exceptional efficiency not only at the rated duty point but across a wide operating range. The pump retains high efficiency even when actual flow deviates by ±20% from the rated flow. This characteristic enables systems to operate efficiently when multiple pumps run in parallel, perfectly matching variable duty points and diverse flow demands across different applications.
Compensated Double Volute Design
The hydraulic double volute design virtually eliminates radial forces on the shaft, ensuring smooth performance throughout the entire operating range. This engineering approach reduces internal recirculation and turbulence, resulting in longer pump lifespan and higher operational efficiency.
Francis Vane Impeller
The Francis vane impeller design balances axial and radial forces while decreasing vortex and recirculation in the volute. This widens the high-efficiency operating range and meets low NPSH requirements at high flow rates, ensuring reliable operation across the entire performance envelope.
Independent Bearing Housing
The independent bearing housing design enables maintenance without interfering with the pump casing. Combined with the bearing sleeve design, this significantly reduces service time and complexity.
Heavy-Duty Bearings
Engineered for the most demanding environments, the heavy-duty bearing design delivers an average rated lifespan of 100,000 hours when operating within 80% to 120% of Best Efficiency Point (BEP).
Replaceable Wear Rings
The replaceable wear ring design addresses efficiency degradation after extended operation. Wear rings can be manufactured from different materials according to specific application requirements and customer specifications.
Split Casing Maintenance Advantage
The horizontal split casing enables maintenance of all rotating parts without disturbing connected pipelines, minimizing system downtime and reducing service costs.
Performance Maps
50 Hz Performance Range:
- Flow: 30 m³/h – 10,000 m³/h
- Head: 6 m – 250 m
60 Hz Performance Range:
- Flow: 10 m³/h – 15,000 m³/h
- Head: 5 m – 300 m
For detailed performance curves at specific duty points, contact our technical team.
Intelligent System Integration
VFD Compatibility
LS/LSV pumps integrate seamlessly with the Grundfos CUE variable frequency drive or external VFD systems, enabling high-efficiency operation across various frequencies and duty points. This compatibility supports energy optimization strategies and demand-based flow control.
GIS System Integration
Excellent compatibility with Grundfos Intelligent Solutions (GIS) enables advanced monitoring, control, and optimization capabilities for modern building management and industrial process systems.
Applications
Building Systems
- Air conditioning systems
- Heating systems
- Chilled water circulation
- Water condensing systems
- Cooling tower applications
- District energy networks
Water Supply Infrastructure
- Water intake stations
- Water boosting systems
- Water transportation networks
- Filter backwashing
- Agricultural irrigation
Industrial Applications
- Industrial process systems
- Industrial heating circuits
- Boiler feed systems
- Industrial condensing systems
- Seawater desalination plants
Design Engineering Excellence
Computational Fluid Dynamics (CFD)
Grundfos engineers design LS pump hydraulic components using advanced Computational Fluid Dynamics simulations combined with decades of accumulated expertise. CFD analysis delivers:
- Optimized flow system design
- Identification of critical flow issues before manufacturing
- Reduced development costs compared to physical prototyping
- Validated performance predictions
Precision Shaft Engineering
The strength and stiffness of every shaft are meticulously calculated to withstand stress under the harshest operating conditions, ensuring reliable performance throughout the pump’s service life.
Why Choose Grundfos LS/LSV?
Industry-Leading Efficiency
With maximum hydraulic efficiency reaching 91.5%, LS/LSV pumps deliver significant energy savings over conventional split case designs, reducing operational costs and environmental impact.
Low NPSHr Performance
Very low Net Positive Suction Head required (NPSHr) ensures safe and economic operation even when actual operating conditions deviate from designed duty points, providing operational flexibility and cavitation protection.
Reliable Operation
DIN-standard flanges and ISO9906-compliant performance testing ensure consistent, reliable operation that meets international quality benchmarks.
Future-Ready Design
Compatibility with IE5 ultra-premium efficiency motors and intelligent control systems positions LS/LSV pumps for evolving energy regulations and smart building requirements.
Genuine Grundfos Accessories & Parts
Maintain optimal LS/LSV pump performance with original components including mechanical seals, wear rings, impellers, bearings, bearing housings, shaft sleeves, and coupling assemblies. We stock replacement parts for all LS and LSV series models.
Select Grundfos Pumps
Browse our complete inventory of Grundfos LS and LSV split case 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:
- Pump selection based on flow and head requirements
- LS horizontal vs LSV vertical configuration guidance
- Material specification recommendations
- VFD integration support
- Competitive quotations
- Delivery schedules
Energy-Optimized Water Solutions
The LS/LSV range exemplifies Grundfos commitment to pioneering sustainable water solutions through energy optimization. When replacing existing pumps with high-efficiency LS/LSV systems, facilities benefit from reduced energy consumption, lower operating costs, improved reliability, and contribution toward net-zero sustainability goals