Leo 4SR3-11 / 0.75KW Submersible Borehole Pump Only
10426
Introducing the LEO 4SR3-11, a robust 4-inch submersible borehole pump engineered for reliable deep-well water extraction across diverse industries. This versatile submersible pump excels in mining, agriculture, aquaculture, food and beverage production, and residential water supply applications. Built to deliver consistent performance in demanding environments, the 4SR3-11 combines precision hydraulic design with industrial-grade construction to handle continuous operation in borehole and well applications.
Constructed from premium AISI304 stainless steel casing and motor base meeting NEMA standards, this submersible borehole pump features a durable floating impeller made from FDA-approved Noryl® material that resists corrosion and wear. The pump incorporates a built-in AISI304 check valve, integrated strainer, and sealed outlet design to ensure long-term reliability in agricultural irrigation, aquaculture systems, and industrial water supply scenarios. With IP68 protection rating and available in single-phase (0.37-2.2kW) or three-phase (0.75-7.5kW) configurations, it's ideally suited for continuous duty pumping of clear to slightly sandy water with minimal maintenance.
At a glance
Power: 0.75 kW (1 HP)Max. head: 72 mMax. flow: 4.2 m³/h (70 l/min)Connections: Outlet 1¼"Specifications
| Brand | Leo |
| Model | 4SR3-11 |
| Type | 4SR3 Submersible Borehole Pump (100 mm) |
| Motor power | 0.75 kW (1 HP) |
| Stages | 11 |
| Connection | Outlet 1¼" |
| Shut-off head | 72 m |
| Flow range | 0 – 4.2 m³/h (0 – 70 l/min) |
| Dimensions (W × L × H) | 10 × 35 × 10 cm |
| Weight | 3.4 kg |
| Item code | 4SR3-11 |
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) | 72 | 68 | 66 | 64 | 61 | 58 | 54 | 49 | 38 | 26 |
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 4SR3-11:
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 4SR3-11?
The Leo 4SR3-11 has a maximum head of 72 m.
How much water can the Leo 4SR3-11 pump?
The Leo 4SR3-11 pumps up to 4.2 m³/h (70 l/min).
What is the motor power of the Leo 4SR3-11?
The motor power is 0.75 kW (1 HP).
What are the pipe connections of the Leo 4SR3-11?
Outlet 1¼".
