🔧 4" ESPA ES4 12 Submersible Pump with O4I Motor: complete borehole unit
Ready-to-install unit with 4" ESPA ES4 12 submersible hydraulic section and ESPA O4I motor. Designed to pump clean water from boreholes for domestic water supply, irrigation, agriculture and industry. Available in single-phase 230 V and three-phase 400 V versions, with power ratings from 2 to 7.5 hp.
✔ ES4 hydraulic section
- ✔ Body, suction, discharge and shaft: AISI 304 stainless steel
- ✔ Diffusers and impellers: floating, made of technopolymer
- ✔ Seals: NBR/EPDM
- ✔ Built-in check valve
- ✔ Coupling: NEMA MG1-18.388 standard
⚙️ O4I motor
- ✔ 4" ESPA O4I motor, 2-pole asynchronous, oil-cooled
- ✔ Housing and shaft: AISI 304 stainless steel
- ✔ IPX8 protection and class F insulation
- ✔ Continuous duty; single-phase model has built-in thermal protection
- ✔ Cable without plug and external capacitor on single-phase models
📊 Technical Specifications by Model
| Model | Motor | Voltage | hp | kW | Hydraulic section length (mm) | Connection |
|---|---|---|---|---|---|---|
| ES4 12/07 | O4I 200M | 1x230V | 2 | 1,5 | 534 | 2" |
| ES4 12/07 | O4I 200 | 3x400V | 2 | 1,5 | 534 | 2" |
| ES4 12/10 | O4I 300M | 1x230V | 3 | 2,2 | 690 | 2" |
| ES4 12/10 | O4I 300 | 3x400V | 3 | 2,2 | 690 | 2" |
| ES4 12/14 | O4I 400 | 3x400V | 4 | 3 | 989 | 2" |
| ES4 12/19 | O4I 550 | 3x400V | 5,5 | 4 | 1195 | 2" |
| ES4 12/26 | O4I 750 | 3x400V | 7,5 | 5,5 | 1559 | 2" |
💧 Head (m) by Flow Rate (m³/h)
| Model | 0 | 6,0 | 8,4 | 10,8 | 13,2 | 15,6 |
|---|---|---|---|---|---|---|
| ES4 12/07 | 45 | 37 | 33 | 28 | 22 | 14 |
| ES4 12/10 | 64 | 54 | 48 | 41 | 32 | 20 |
| ES4 12/14 | 89 | 76 | 67 | 56 | 43 | 28 |
| ES4 12/19 | 120 | 102 | 91 | 76 | 58 | 37 |
| ES4 12/26 | 163 | 136 | 120 | 100 | 75 | 48 |
In the table, each column shows a flow rate in m³/h and the value is the head in meters.
📋 Operating Limits
- ✔ Maximum water temperature: 35 °C (motor limit)
- ✔ Suspended sand: up to 100 g/m³
