Leo 4SR1-38 / 1.1KW Submersible Borehole Pump Only
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The LEO 4SR1-38 is a 4-inch (100 mm) stainless steel submersible borehole pump end from the 4SR1 series, with 38 stages and a 1.1 kW rating. The 4SR1 hydraulics are sized for a nominal 1 m³/h with an operating range of 0 - 1.5 m³/h (0 - 25 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 1.1 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: 1.1 kW (1.5 HP)Max. head: 253 mMax. flow: 1.5 m³/h (25 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 | 4SR1-38 (pump end only) |
| Stages | 38 |
| Motor required | 1.1 kW, 4" NEMA submersible motor (single-phase 220-240V up to 2.2 kW, or three-phase 380-415V) |
| Nominal flow | 1 m³/h; range 0 - 1.5 m³/h (0 - 25 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 | 4SR1-38 |
| Type | 4SR1 Submersible Borehole Pump (100 mm) |
| Motor power | 1.1 kW (1.5 HP) |
| Stages | 38 |
| Connection | Outlet 1¼" |
| Shut-off head | 253 m |
| Flow range | 0 – 1.5 m³/h (0 – 25 l/min) |
| Dimensions (W × L × H) | 10 × 87 × 10 cm |
| Weight | 8.2 kg |
| Item code | 4SR1-38 |
Performance Table
| Flow Q (m³/h) | 0 | 0.3 | 0.6 | 0.9 | 1.2 | 1.5 |
|---|---|---|---|---|---|---|
| Flow Q (l/min) | 0 | 5 | 10 | 15 | 20 | 25 |
| Head H (m) | 253 | 234 | 208 | 169 | 117 | 52 |
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 4SR1-38:
Leo 4SR1 Series Performance Curves
332 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 4SR1-38?
The Leo 4SR1-38 has a maximum head of 253 m.
How much water can the Leo 4SR1-38 pump?
The Leo 4SR1-38 pumps up to 1.5 m³/h (25 l/min).
What is the motor power of the Leo 4SR1-38?
The motor power is 1.1 kW (1.5 HP).
What are the pipe connections of the Leo 4SR1-38?
Outlet 1¼".
