Leo 4SR2-40 / 2.2KW Submersible Borehole Pump Only
10421
The LEO 4SR2-40 is a 4-inch (100 mm) stainless steel submersible borehole pump end from the 4SR2 series, with 40 stages and a 2.2 kW rating. The 4SR2 hydraulics are sized for a nominal 2 m³/h with an operating range of 0 - 3.0 m³/h (0 - 50 l/min); the high stage count gives the head needed for deep boreholes and long pipe runs. This is the pump end only: it couples to a standard 4" NEMA submersible motor of 2.2 kW, sold separately.
The 4SR range uses an AISI304 stainless steel outer casing, shaft and motor bracket, with floating Noryl® impellers (FDA-approved material) that tolerate small amounts of sand. A built-in AISI304 check valve and inlet strainer protect the pump and the rising main. Typical uses are farm and game-farm water supply, irrigation, livestock watering, domestic and estate borehole systems, and mining and building-site water supply.
At a glance
Power: 2.2 kW (3 HP)Max. head: 245 mMax. flow: 3 m³/h (50 l/min)Connections: Outlet 1¼"Best for: Borehole water supply for farms, estates and homes, Irrigation and livestock watering, Mining and building-industry water supplySpecifications
| Brand | Leo |
| Model | 4SR2-40 (pump end only) |
| Stages | 40 |
| Motor required | 2.2 kW, 4" NEMA submersible motor (single-phase 220-240V up to 2.2 kW, or three-phase 380-415V) |
| Nominal flow | 2 m³/h; range 0 - 3.0 m³/h (0 - 50 l/min) |
| Borehole | minimum 100 mm (4") internal diameter |
| Materials | AISI304 casing, shaft, bracket and check valve; Noryl® floating impellers |
| Maximum fluid temperature | 35 °C |
| Maximum sand content | 0.25% |
| Frequency | 50 Hz |
| Brand | Leo |
| Model | 4SR2-40 |
| Type | 4SR2 Submersible Borehole Pump (100 mm) |
| Motor power | 2.2 kW (3 HP) |
| Stages | 40 |
| Connection | Outlet 1¼" |
| Shut-off head | 245 m |
| Flow range | 0 – 3 m³/h (0 – 50 l/min) |
| Dimensions (W × L × H) | 10 × 92 × 10 cm |
| Weight | 10.1 kg |
| Item code | 4SR2-40 |
Performance Table
| Flow Q (m³/h) | 0 | 0.9 | 1.2 | 1.5 | 1.8 | 2.1 | 2.4 | 2.7 | 3 |
|---|---|---|---|---|---|---|---|---|---|
| Flow Q (l/min) | 0 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 |
| Head H (m) | 245 | 229 | 220 | 208 | 193 | 175 | 158 | 136 | 111 |
Head at each flow rate from the manufacturer's technical data. For a duty-point check use the Get a Quote wizard below.
Performance Curves and Technical Data (PDF)
Download the curve sheet with the performance curves, dimensions and technical data for the Leo 4SR2-40:
Leo 4SR2 Series Performance Curves
387 kB | Download
Applications
- Borehole water supply for farms, estates and homes
- Irrigation and livestock watering
- Mining and building-industry water supply
- Water transfer to reservoirs and elevated tanks
Need help choosing or want a price?
Our pump team will check the right size for your flow and head and give you a quote.
WhatsApp us: 082 516 2248 Get a Quote / Size my pump info@pumps.co.za
Frequently Asked Questions
What is the maximum head of the Leo 4SR2-40?
The Leo 4SR2-40 has a maximum head of 245 m.
How much water can the Leo 4SR2-40 pump?
The Leo 4SR2-40 pumps up to 3 m³/h (50 l/min).
What is the motor power of the Leo 4SR2-40?
The motor power is 2.2 kW (3 HP).
What are the pipe connections of the Leo 4SR2-40?
Outlet 1¼".
