Leo 4SR4-35 / 3KW Submersible Borehole Pump Only
10434
Introducing the LEO 4SR4-35 submersible borehole pump, a robust 4-inch pump engineered for reliable water extraction in demanding applications across mining, agriculture, aquaculture, and food and beverage industries. Built with a premium AISI304 stainless steel casing and motor base that meets NEMA standards, this pump delivers consistent performance for both industrial water supply systems and residential borehole installations. Available in single-phase (0.37-2.2kW) and three-phase (0.75-7.5kW) configurations, it provides flexible power options to suit any installation requirement.
Construction excellence defines the 4SR4-35, featuring a durable floating impeller designed from FDA-approved Noryl® material that resists corrosion and wear even in challenging downhole environments. The pump incorporates a built-in AISI304 check valve, strainer, and sealed gasket assembly to ensure long-term reliability and prevent contamination, making it ideal for agricultural water supply, mining operations, and food processing applications where water quality and durability are paramount. With a maximum sand content tolerance of 0.25% and fluid temperature rating up to 35 degC, this submersible pump excels in both clean and moderately sandy borehole conditions.
At a glance
Power: 3 kW (4 HP)Max. head: 231 mMax. flow: 6 m³/h (100 l/min)Connections: Outlet 1¼"Specifications
| Brand | Leo |
| Model | 4SR4-35 |
| Type | 4SR4 Submersible Borehole Pump (100 mm) |
| Motor power | 3 kW (4 HP) |
| Stages | 35 |
| Connection | Outlet 1¼" |
| Shut-off head | 231 m |
| Flow range | 0 – 6 m³/h (0 – 100 l/min) |
| Dimensions (W × L × H) | 10 × 94 × 10 cm |
| Weight | 7.9 kg |
| Item code | 4SR4-35 |
Performance Table
| Flow Q (m³/h) | 0 | 1.5 | 1.8 | 2.1 | 2.4 | 2.7 | 3 | 3.6 | 4.2 | 4.8 | 5.4 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Flow Q (l/min) | 0 | 25 | 30 | 35 | 40 | 45 | 50 | 60 | 70 | 80 | 90 | 100 |
| Head H (m) | 231 | 217 | 212 | 208 | 202 | 196 | 189 | 170 | 149 | 120 | 87 | 50 |
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 4SR4-35:
Leo 4SR4 Series Performance Curves
546 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 4SR4-35?
The Leo 4SR4-35 has a maximum head of 231 m.
How much water can the Leo 4SR4-35 pump?
The Leo 4SR4-35 pumps up to 6 m³/h (100 l/min).
What is the motor power of the Leo 4SR4-35?
The motor power is 3 kW (4 HP).
What are the pipe connections of the Leo 4SR4-35?
Outlet 1¼".
