Product Overview
The Grundfos SP series consists of submersible multistage centrifugal pumps designed specifically for deep-well applications. Primarily used for extracting raw water from underground sources, they are suitable for a wide range of industrial and civil applications. Constructed from stainless steel and equipped with high-efficiency motors, these pumps offer outstanding performance and reliability.
Key Features
1. High Efficiency and Energy Savings
Optimized for energy efficiency in compliance with EU directives.
Features high-efficiency hydraulics and premium motors; selected models achieve an MEI (Minimum Efficiency Index) ≥ 0.70.
Significant energy savings compared to standard pumps; for example, a pump operating at a 100m head and 200m³/h flow rate for 10 years can save approximately €34,000 in electricity costs (at €0.10/kWh).
2. Materials and Construction
Available in various stainless steel grades:
SP Standard: EN 1.4301 stainless steel
SP N version: EN 1.4401 stainless steel (enhanced corrosion resistance)
SP R version: EN 1.4539 stainless steel (highest corrosion resistance)
Equipped with water-lubricated bearings and sand-flushing channels to prevent particle accumulation.
Built-in reliable check valve to prevent backflow and water hammer effects.
Start-up screw design prevents dry running and ensures continuous bearing lubrication.
3. Wide Range of Applications
Raw water supply
Agricultural irrigation
Groundwater level control
Pressure boosting systems
Fountain applications
Mining and offshore applications
4. Motor Features
Comprehensive motor range with power ratings from 0.37 kW to 250 kW.
High-efficiency design; some models exceed 80% efficiency.
Rewindable motor design for easy maintenance.
Industrial-grade T60 motors capable of handling liquids up to 60°C.
Built-in thermal protection to prevent overheating damage.
5. Operating Characteristics
Maximum operating pressure up to 6 MPa (60 bar).
Suitable for continuous or intermittent operation.
Low sound pressure levels; most models <70 dB(A).
Flow range: minimum 0.1x nominal flow to maximum 1.3x nominal flow.
Environmentally friendly models
Grundfos also offers the SP... The NE series of environmental pumps is specifically designed for corrosive and mildly contaminated liquids, featuring:
Check-valve-free design
FKM rubber components and ceramic/tungsten carbide seals
Suitability for special media, such as oil-contaminated liquids
Maximum sand content of 50 g/m³
Accessories and selection
Wide range of electrical accessories: variable frequency drives (VFDs), motor protection units, communication interfaces, etc.
Mechanical accessories: connection adapters, zinc anodes, flow sleeves, etc.
Precise model selection available via the Grundfos Product Center online tool
Renowned for their efficiency, reliability, and durability, SP series deep-well pumps are the ideal choice for groundwater extraction and transfer applications.











