Leo 4SR3-8 / 0.55KW Submersible Borehole Pump Only
12341
The LEO 4SR3-8 is a robust 4-inch submersible borehole pump engineered for reliable water extraction in demanding environments. Built to serve mining, agriculture, aquaculture, food and beverage production, and residential water supply applications, this pump combines proven submersible pump technology with durable construction that handles the rigors of deep well and borehole operation across multiple industries.
Constructed with premium AISI304 stainless steel casing and motor base meeting NEMA standards, the 4SR3-8 features a innovative floating impeller design manufactured from FDA-approved Noryl® material for exceptional durability and hygiene. Its integrated check valve, strainer, and high-quality hydraulic design make it ideal for applications involving moderate sand content, delivering consistent performance whether powering agricultural irrigation systems, aquaculture installations, or municipal water supply in boreholes and deep wells.
At a glance
Power: 0.55 kW (0.75 HP)Max. head: 54 mMax. flow: 4.2 m³/h (70 l/min)Connections: Outlet 1¼"Specifications
| Brand | Leo |
| Model | 4SR3-8 |
| Type | 4SR3 Submersible Borehole Pump (100 mm) |
| Motor power | 0.55 kW (0.75 HP) |
| Stages | 8 |
| Connection | Outlet 1¼" |
| Shut-off head | 54 m |
| Flow range | 0 – 4.2 m³/h (0 – 70 l/min) |
| Dimensions (W × L × H) | 10 × 29 × 10 cm |
| Weight | 2.9 kg |
| Item code | 4SR3-8 |
Performance Table
| Flow Q (m³/h) | 0 | 1.2 | 1.5 | 1.8 | 2.1 | 2.4 | 2.7 | 3 | 3.6 | 4.2 |
|---|---|---|---|---|---|---|---|---|---|---|
| Flow Q (l/min) | 0 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 60 | 70 |
| Head H (m) | 54 | 51 | 50 | 49 | 46 | 43 | 41 | 38 | 30 | 19 |
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 4SR3-8:
Leo 4SR3 Series Performance Curves
422 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 4SR3-8?
The Leo 4SR3-8 has a maximum head of 54 m.
How much water can the Leo 4SR3-8 pump?
The Leo 4SR3-8 pumps up to 4.2 m³/h (70 l/min).
What is the motor power of the Leo 4SR3-8?
The motor power is 0.55 kW (0.75 HP).
What are the pipe connections of the Leo 4SR3-8?
Outlet 1¼".
