Leo 4SR2-7 / 0.37KW Submersible Borehole Pump Only
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The LEO 4SR2-7 is a robust 4-inch submersible borehole pump engineered for reliable water extraction in diverse industrial and agricultural applications. This versatile submersible pump excels in mining operations, building construction, agricultural irrigation, aquaculture systems, food and beverage processing, and domestic water supply installations. Built to perform consistently across demanding environments, the 4SR2 series delivers dependable performance where traditional surface pumps fall short.
Constructed with a durable AISI304 stainless steel casing and motor base that meets NEMA standards, this borehole pump incorporates a high-strength floating impeller design manufactured from FDA-approved Noryl® material for extended service life and food-grade applications. The submersible pump features an integrated AISI304 check valve, premium gaskets, and built-in strainer system that work together to protect against contamination and ensure smooth operation in sandy or silty water conditions up to 0.25% sand content. Ideal for wells, boreholes, and extraction applications requiring a submersible solution, the 4SR2-7 offers single-phase and three-phase motor options ranging from 0.37kW to 7.5kW, delivering flow rates between 1 and 10 m3/h.
At a glance
Power: 0.37 kW (0.5 HP)Max. head: 46 mMax. flow: 3 m³/h (50 l/min)Connections: Outlet 1¼"Specifications
| Brand | Leo |
| Model | 4SR2-7 |
| Type | 4SR2 Submersible Borehole Pump (100 mm) |
| Motor power | 0.37 kW (0.5 HP) |
| Stages | 7 |
| Connection | Outlet 1¼" |
| Shut-off head | 46 m |
| Flow range | 0 – 3 m³/h (0 – 50 l/min) |
| Dimensions (W × L × H) | 10 × 28 × 10 cm |
| Weight | 2.9 kg |
| Item code | 4SR2-7 |
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) | 46 | 43 | 42 | 39 | 36 | 33 | 29 | 26 | 22 |
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 4SR2-7:
Leo 4SR2 Series Performance Curves
387 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 4SR2-7?
The Leo 4SR2-7 has a maximum head of 46 m.
How much water can the Leo 4SR2-7 pump?
The Leo 4SR2-7 pumps up to 3 m³/h (50 l/min).
What is the motor power of the Leo 4SR2-7?
The motor power is 0.37 kW (0.5 HP).
What are the pipe connections of the Leo 4SR2-7?
Outlet 1¼".
