Leo 4SR1-19 / 0.55KW Submersible Borehole Pump Only
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Introducing the LEO 4SR1-19, a robust 4-inch submersible borehole pump engineered for reliable deep-well water extraction across diverse industries. This compact yet powerful submersible pump series excels in mining and building applications, agricultural irrigation, aquaculture systems, food and beverage processing, and residential water supply projects. Built to perform consistently in demanding environments, the 4SR1-19 combines Italian engineering with proven submersible pump technology to deliver dependable performance where it matters most.
Constructed from premium AISI304 stainless steel, this submersible borehole pump features a durable floating impeller design crafted from FDA-approved Noryl® material, ensuring longevity and suitability for potable water applications. The motor base meets rigorous NEMA standards and incorporates an integrated AISI304 check valve, strainer, and motorized outlet, creating a sealed, corrosion-resistant assembly ideal for sandy or silty borehole conditions. Available in single-phase (0.37-2.2 kW) and three-phase (0.75-7.5 kW) configurations with flow rates up to 10 m3/h, the 4SR1-19 handles suspended solids up to 0.25% sand content, making it the intelligent choice for challenging groundwater extraction scenarios.
At a glance
Power: 0.55 kW (0.75 HP)Max. head: 126 mMax. flow: 1.5 m³/h (25 l/min)Connections: Outlet 1¼"Specifications
| Brand | Leo |
| Model | 4SR1-19 |
| Type | 4SR1 Submersible Borehole Pump (100 mm) |
| Motor power | 0.55 kW (0.75 HP) |
| Stages | 19 |
| Connection | Outlet 1¼" |
| Shut-off head | 126 m |
| Flow range | 0 – 1.5 m³/h (0 – 25 l/min) |
| Dimensions (W × L × H) | 10 × 42 × 10 cm |
| Weight | 4.7 kg |
| Item code | 4SR1-19 |
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) | 126 | 118 | 105 | 86 | 60 | 30 |
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 4SR1-19:
Leo 4SR1 Series Performance Curves
332 kB | Download
Applications
- 4" SR series submersible pump adopts AISI304 casing and high-strength and durable "floating impeller"
- Impellers are made of American "Noryl®" material, which has got the approval of FDA(American Food and Drug Administration)
- With high-quality hydraulic design, AISI304 motor base up to "NEMA" standard, built-in AISI304 check valve, gasket, motorund outlet and built-in strainer
- Can be widely applied to mining and building industry, agriculture, aquaculture, food and beverage industry and family water supply
Motor And Pump
- Power: Single phase: 0.37~2.2KW 220~240V
- Power: Three phase: 0.75~7.5KW 380~415V
- Insulation class: B
- Protection grade: IP68
- Frequency: 50HZ
- Flow range: 1~10 (m3/h)
- Maximum fluid temperature: 35
- Maximum sand content: 0.25%
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 4SR1-19?
The Leo 4SR1-19 has a maximum head of 126 m.
How much water can the Leo 4SR1-19 pump?
The Leo 4SR1-19 pumps up to 1.5 m³/h (25 l/min).
What is the motor power of the Leo 4SR1-19?
The motor power is 0.55 kW (0.75 HP).
What are the pipe connections of the Leo 4SR1-19?
Outlet 1¼".
