Leo 4SR2-28 / 1.5KW Submersible Borehole Pump Only
10420
The LEO 4SR2-28 is a robust 4-inch submersible borehole pump engineered for reliable water extraction in demanding applications across mining, agriculture, aquaculture, and food and beverage industries. Built with a durable AISI304 stainless steel casing and high-quality hydraulic design, this pump delivers consistent performance for everything from commercial water supply systems to domestic household water needs. Its floating impeller technology and FDA-approved Noryl® construction ensure long-lasting durability even in challenging operational environments.
This submersible pump features premium stainless steel construction throughout, including an AISI304 motor base that meets NEMA standards, integrated check valve, and built-in strainer for protection against sand and debris. Available in both single-phase (0.37-2.2kW at 220-240V) and three-phase (0.75-7.5kW at 380-415V) configurations, the 4SR2-28 handles flow rates from 1 to 10 m3/h with IP68 waterproof protection and B-class insulation. Ideal for agricultural irrigation, mining operations, and industrial applications, it tolerates sand content up to 0.25% and operates reliably at fluid temperatures up to 35 degC.
At a glance
Power: 1.5 kW (2 HP)Max. head: 189 mMax. flow: 3 m³/h (50 l/min)Connections: Outlet 1¼"Specifications
| Brand | Leo |
| Model | 4SR2-28 |
| Type | 4SR2 Submersible Borehole Pump (100 mm) |
| Motor power | 1.5 kW (2 HP) |
| Stages | 28 |
| Connection | Outlet 1¼" |
| Shut-off head | 189 m |
| Flow range | 0 – 3 m³/h (0 – 50 l/min) |
| Dimensions (W × L × H) | 10 × 68 × 10 cm |
| Weight | 7.1 kg |
| Item code | 4SR2-28 |
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) | 189 | 178 | 172 | 164 | 153 | 140 | 126 | 108 | 90 |
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 4SR2-28:
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 4SR2-28?
The Leo 4SR2-28 has a maximum head of 189 m.
How much water can the Leo 4SR2-28 pump?
The Leo 4SR2-28 pumps up to 3 m³/h (50 l/min).
What is the motor power of the Leo 4SR2-28?
The motor power is 1.5 kW (2 HP).
What are the pipe connections of the Leo 4SR2-28?
Outlet 1¼".
