Grundfos SQFlex 2.5-2 Solar Pump | 3" | 80 m | 3.5 m³/h | 1.4 kW
Modelo: SQFlex 2,5-2- Sku: GRUNBOM003
- Vendor: Grundfos
Specifications
Product Description
The Grundfos SQFlex 2.5-2 Solar Pump is a 3" submersible pump designed for medium-depth wells that require sustained flow with high efficiency. Its helical (screw) hydraulic system provides stable pressure at heights up to 80 meters, reaching a maximum flow rate of 3.5 m³/h. It incorporates electronics with maximum power point tracking (MPPT) to optimize photovoltaic energy and accepts both direct current and alternating current input, enabling pure solar, hybrid, or grid/generator backup configurations. Constructed from AISI 304 stainless steel and rated IP68, it offers reliability, durability, and easy installation in boreholes from 76 mm.
Main Features
- High-pressure helical hydraulics: stable performance at medium/high head with excellent energy efficiency.
- Wide input range: DC 30–300 Vdc with integrated MPPT and single-phase AC 90–240 Vac.
- Input power (P1) 1.4 kW; MSF3 motor at 3,600 rpm with internal thermal protection.
- Robust construction in AISI 304 stainless steel; integrated non-return valve.
- Protection rating IP68; insulation class F; suitable for continuous operation in demanding environments.
- Compact 3" diameter (Ø approx. 74 mm) and Rp 1 1/4" outlet for boreholes ≥ 76 mm.
Advantages or Benefits
- Savings and autonomy: direct pumping with solar panels without external inverters, lower operating and maintenance costs.
- Total flexibility: operates with solar DC and grid or generator AC, ideal for hybrid or backup scenarios.
- Stable supply: the helical curve maintains pressure at 60–80 m, perfect for elevated tanks and drip irrigation.
- Quick installation: integrated electronics, standard protections, and reduced dimensions for narrow wells.
- Long service life: stainless materials, superior sealing, and protection against dry running and overvoltage.
Purpose or Applications
Water supply for isolated homes, farms and livestock, tank filling at height, localized irrigation (drip/light sprinkling), small rural networks, and compact treatment plants. Due to its balance between head and flow, the Grundfos SQFlex 2.5-2 Solar Pump is especially suitable when reliable pressure is required with moderate demand.
Technical Specifications
| Model | SQF 2.5-2 |
| Pump diameter | 3" (Ø approx. 74 mm) |
| Maximum head | 80 m |
| Maximum flow rate | 3.5 m³/h |
| Hydraulic type | Helical rotor (screw) |
| Input power (P1) | 1.4 kW |
| DC input | 30–300 Vdc (integrated MPPT) |
| AC input | 1× 90–240 Vac |
| Nominal current | 8.4 A |
| Speed | 3,600 rpm |
| Protection rating | IP68 |
| Insulation class | F |
| Hydraulic outlet | Rp 1 1/4" |
| Minimum well diameter | 76 mm |
| Materials | AISI 304 stainless steel (body/rotor); integrated non-return valve |
| Protections | Dry running, over/under voltage, and thermal overload |
| Liquid temperature | ≤ 40 °C |
| Maximum ambient pressure | 15 bar |
| Supply cable | 2 m |
| Weight | ≈ 10.2 kg |
Compatibilities
Direct operation with photovoltaic modules within 30–300 Vdc and with single-phase grid/generator 90–240 Vac. Recommended accessories (not included): CU200 controller, IO101/IO102 interfaces, level probes for well and tank, suitable DC/AC protections (disconnectors, fuses, surge arresters), and 1 1/4" piping/valves.
The Grundfos SQFlex 2.5-2 Solar Pump combines efficiency, versatility, and robustness to ensure reliable water supply with solar energy in medium-depth wells.
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Grundfos SQFlex 2.5-2 Solar Pump | 3" | 80 m | 3.5 m³/h | 1.4 kW
