🔧 4" ESPA ES4 01 Submersible Electric Pump with O4I Motor: complete borehole pump set
Ready-to-install assembly with a 4" ESPA ES4 01 submersible pump 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 0.75 to 1.5 HP.
✔ ES4 hydraulics
- ✔ 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
- ✔ ESPA O4I motor, 4", asynchronous, 2-pole, oil-cooled
- ✔ Housing and shaft: AISI 304 stainless steel
- ✔ IPX8 protection and Class F insulation
- ✔ Continuous-duty; single-phase models have built-in thermal protection
- ✔ Cable without plug and external capacitor for single-phase models
📊 Technical Specifications by Model
| Model | Motor | Voltage | HP | kW | Hydraulic length (mm) | Connection |
|---|---|---|---|---|---|---|
| ES4 01/19 | O4I 075 | 3x400V | 0,75 | 0,55 | 481 | 1 1/4" |
| ES4 01/26 | O4I 100M | 1x230V | 1 | 0,75 | 642 | 1 1/4" |
| ES4 01/26 | O4I 100 | 3x400V | 1 | 0,75 | 642 | 1 1/4" |
| ES4 01/38 | O4I 150M | 1x230V | 1,5 | 1,1 | 864 | 1 1/4" |
| ES4 01/38 | O4I 150 | 3x400V | 1,5 | 1,1 | 864 | 1 1/4" |
| ES4 01/19 | O4I 075M | 1x230V | 0,75 | 0,55 | 481 | 1 1/4" |
💧 Head (m) by Flow Rate (m³/h)
| Model | 0 | 0,3 | 0,6 | 0,9 | 1,2 | 1,5 |
|---|---|---|---|---|---|---|
| ES4 01/19 | 126 | 118 | 105 | 86 | 60 | 30 |
| ES4 01/26 | 173 | 160 | 141 | 117 | 81 | 39 |
| ES4 01/38 | 253 | 234 | 208 | 169 | 117 | 52 |
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
