Leo 4SR2-20 / 1.1KW Submersible Borehole Pump Only
12335
Introducing the LEO 4SR2-20 submersible borehole pump, a robust 4-inch pump engineered for diverse water supply applications across mining, agriculture, aquaculture, food and beverage processing, and residential use. Built on LEO's proven submersible pump technology, this model delivers reliable performance in demanding environments where durability and efficiency are essential for consistent water delivery.
Constructed from premium AISI304 stainless steel casing with a high-strength floating impeller design, the 4SR2-20 features FDA-approved Noryl® impellers that resist corrosion and wear in challenging conditions. The pump incorporates an AISI304 motor base meeting NEMA standards, integrated check valve, and built-in strainer, making it ideal for borehole installations where maintenance accessibility is limited, while its IP68 protection rating and robust construction handle sandy or sediment-laden water up to 0.25% sand content with ease.
At a glance
Power: 1.1 kW (1.5 HP)Max. head: 139 mMax. flow: 3 m³/h (50 l/min)Connections: Outlet 1¼"Specifications
| Brand | Leo |
| Model | 4SR2-20 |
| Type | 4SR2 Submersible Borehole Pump (100 mm) |
| Motor power | 1.1 kW (1.5 HP) |
| Stages | 20 |
| Connection | Outlet 1¼" |
| Shut-off head | 139 m |
| Flow range | 0 – 3 m³/h (0 – 50 l/min) |
| Dimensions (W × L × H) | 10 × 51 × 10 cm |
| Weight | 5.3 kg |
| Item code | 4SR2-20 |
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) | 139 | 131 | 127 | 120 | 111 | 101 | 90 | 75 | 60 |
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 4SR2-20:
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 4SR2-20?
The Leo 4SR2-20 has a maximum head of 139 m.
How much water can the Leo 4SR2-20 pump?
The Leo 4SR2-20 pumps up to 3 m³/h (50 l/min).
What is the motor power of the Leo 4SR2-20?
The motor power is 1.1 kW (1.5 HP).
What are the pipe connections of the Leo 4SR2-20?
Outlet 1¼".
