🔧 ESPA ES4 03 4" Submersible Pump with Franklin Motor: complete borehole set
Ready-to-install set with a ESPA ES4 03 4" submersible hydraulic unit and Franklin Electric 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 1 to 3 HP.
✔ ES4 hydraulics
- ✔ Body, suction, discharge and shaft: AISI 304 stainless steel
- ✔ Diffusers and impellers: floating, made of technopolymer
- ✔ Gaskets: NBR/EPDM
- ✔ Built-in check valve
- ✔ Coupling: NEMA MG1-18.388 standard
⚙️ Franklin Motor
- ✔ 4" Franklin Electric motor, asynchronous, water-filled
- ✔ Construction: NSS motor in AISI 304 stainless steel
- ✔ Insulation class B; voltage tolerance +6% / -10%
- ✔ Starts: up to 20 per hour, spaced apart
- ✔ Installation vertically or horizontally; compatible with a frequency inverter above 30 Hz
- ✔ NEMA 4" coupling; single-phase models include an external capacitor in the kit
📊 Technical Table by Model
| Model | Motor | Voltage | HP | kW | Hydraulic unit length (mm) | Connection |
|---|---|---|---|---|---|---|
| ES4 03/11 | Franklin 4" 0.75 kW | 1x230V | 1 | 0,75 | 342 | 1 1/4" |
| ES4 03/11 | Franklin 4" 0.75 kW | 3x400V | 1 | 0,75 | 342 | 1 1/4" |
| ES4 03/16 | Franklin 4" 1.1 kW | 1x230V | 1,5 | 1,1 | 430 | 1 1/4" |
| ES4 03/16 | Franklin 4" 1.1 kW | 3x400V | 1,5 | 1,1 | 430 | 1 1/4" |
| ES4 03/21 | Franklin 4" 1.5 kW | 1x230V | 2 | 1,5 | 519 | 1 1/4" |
| ES4 03/21 | Franklin 4" 1.5 kW | 3x400V | 2 | 1,5 | 519 | 1 1/4" |
| ES4 03/32 | Franklin 4" 2.2 kW | 3x400V | 3 | 2,2 | 749 | 1 1/4" |
💧 Head (m) by Flow Rate (m³/h)
| Model | 0 | 1,2 | 1,8 | 2,4 | 3,0 | 4,2 |
|---|---|---|---|---|---|---|
| ES4 03/11 | 72 | 68 | 64 | 58 | 49 | 26 |
| ES4 03/16 | 106 | 101 | 95 | 83 | 70 | 33 |
| ES4 03/21 | 142 | 135 | 127 | 115 | 100 | 49 |
| ES4 03/32 | 208 | 200 | 187 | 165 | 138 | 62 |
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: 30 °C (motor limit)
- ✔ Maximum depth: 150 m (motor)
- ✔ Suspended sand: up to 100 g/m³
