Leo 4SR3-5 / 0.37KW Submersible Borehole Pump Only
10425
The LEO 4SR3-5 is a robust 4-inch submersible borehole pump engineered for deep well applications across mining, agriculture, aquaculture, and food and beverage industries. Built on decades of reliable pump manufacturing expertise, this series delivers consistent performance for both commercial water supply systems and residential household applications. Its compact submersible design makes it ideal for installations where space is limited and reliability cannot be compromised.
Constructed with food-grade durability, the 4SR3-5 features an AISI304 stainless steel casing and motor base that meets NEMA standards, ensuring exceptional corrosion resistance and longevity in demanding environments. The pump's floating impeller technology utilizes American-made Noryl® material, FDA-approved for safe water contact, while an integrated AISI304 check valve and built-in strainer provide protection against contamination. With available power ratings from 0.37kW to 7.5kW in single and three-phase configurations, this submersible pump accommodates flow rates up to 10 m3/h and operates reliably with sand content up to 0.25%, making it perfectly suited for agricultural irrigation, building water supply, and industrial water extraction applications.
At a glance
Power: 0.37 kW (0.5 HP)Max. head: 34 mMax. flow: 4.2 m³/h (70 l/min)Connections: Outlet 1¼"Specifications
| Brand | Leo |
| Model | 4SR3-5 |
| Type | 4SR3 Submersible Borehole Pump (100 mm) |
| Motor power | 0.37 kW (0.5 HP) |
| Stages | 5 |
| Connection | Outlet 1¼" |
| Shut-off head | 34 m |
| Flow range | 0 – 4.2 m³/h (0 – 70 l/min) |
| Dimensions (W × L × H) | 10 × 24 × 10 cm |
| Weight | 2.5 kg |
| Item code | 4SR3-5 |
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) | 34 | 32 | 31 | 30 | 29 | 28 | 26 | 24 | 19 | 13 |
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 4SR3-5:
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 4SR3-5?
The Leo 4SR3-5 has a maximum head of 34 m.
How much water can the Leo 4SR3-5 pump?
The Leo 4SR3-5 pumps up to 4.2 m³/h (70 l/min).
What is the motor power of the Leo 4SR3-5?
The motor power is 0.37 kW (0.5 HP).
What are the pipe connections of the Leo 4SR3-5?
Outlet 1¼".
