Leo 4SR8-21 / 3.7KW Submersible Borehole Pump Only
10463
The LEO 4SR8-21 is a 4-inch submersible borehole pump engineered for reliable water extraction in diverse industrial and agricultural applications. Built to excel in mining, construction, aquaculture, food and beverage production, and residential water supply systems, this pump combines robust engineering with FDA-approved materials to deliver consistent performance in demanding environments.
Constructed with a durable AISI304 stainless steel casing and motor base that meets NEMA standards, the 4SR8-21 features American Noryl® impellers renowned for strength and longevity, along with an integrated AISI304 check valve and built-in strainer for added protection. Its high-quality hydraulic design handles flow rates from 1 to 10 m3/h with single-phase (0.37-2.2 kW) or three-phase (0.75-7.5 kW) motor options, making it ideal for both small-scale and larger industrial borehole installations where reliability and corrosion resistance are paramount.
At a glance
Power: 3.7 kW (5 HP)Max. head: 132 mMax. flow: 12 m³/h (200 l/min)Connections: Outlet 2"Specifications
| Brand | Leo |
| Model | 4SR8-21 |
| Type | 4SR8 Submersible Borehole Pump (100 mm) |
| Motor power | 3.7 kW (5 HP) |
| Stages | 21 |
| Connection | Outlet 2" |
| Shut-off head | 132 m |
| Flow range | 0 – 12 m³/h (0 – 200 l/min) |
| Dimensions (W × L × H) | 10 × 86 × 10 cm |
| Weight | 7.8 kg |
| Item code | 4SR8-21 |
Performance Table
| Flow Q (m³/h) | 0 | 4.8 | 5.4 | 6 | 7.2 | 8.4 | 9.6 | 10.8 | 12 |
|---|---|---|---|---|---|---|---|---|---|
| Flow Q (l/min) | 0 | 80 | 90 | 100 | 120 | 140 | 160 | 180 | 200 |
| Head H (m) | 132 | 117 | 114 | 111 | 103 | 93 | 82 | 68 | 52 |
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 4SR8-21:
Leo 4SR8 Series Performance Curves
446 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 4SR8-21?
The Leo 4SR8-21 has a maximum head of 132 m.
How much water can the Leo 4SR8-21 pump?
The Leo 4SR8-21 pumps up to 12 m³/h (200 l/min).
What is the motor power of the Leo 4SR8-21?
The motor power is 3.7 kW (5 HP).
What are the pipe connections of the Leo 4SR8-21?
Outlet 2".
